Infrastructure › Water
Wastewater treatment capacity
Can a town take more homes and businesses? Uisce Éireann rates the spare capacity at the treatment plant serving each of 1,071 settlements: green (spare), amber (limited, case by case) or red (none at present).
169red: no spare capacity
100amber: limited capacity
802green: spare capacity
163with an upgrade planned or underway
Map
Spare capacityLimitedNone
By county
Settlements rated red, of all on the register.
Every settlement
| Settlement | County | Treatment plant | Capacity | Upgrade |
|---|---|---|---|---|
| Ballinabrannagh | Carlow | Ballinabrannagh & Killeeshal WWTP | Red | Planned or underway |
| Bilboa | Carlow | Bilboa WWTP | Red | |
| Clonegal | Carlow | Clonegal WWTP | Red | |
| Glynn | Carlow | Glynn WWTP | Red | |
| Killeeshal | Carlow | Ballinabrannagh & Killeeshal WWTP | Red | Planned or underway |
| Nurney | Carlow | Nurney WWTP | Red | |
| Bawnboy | Cavan | Bawnboy WWTP | Red | |
| Kingscourt | Cavan | Kingscourt WWTP | Red | Planned or underway |
| Kildysert | Clare | Kildysert WWTP | Red | |
| Kilkeshin | Clare | Kilkishen WWTP | Red | |
| Miltown Malbay | Clare | Milltown/Malbay WWTP | Red | |
| Allihies | Cork | Allihies WWTP | Red | |
| Ballincurrig | Cork | Ballincurrig WWTP | Red | |
| Ballinspittle (south) | Cork | Ballinspittle Village WWTP | Red | Planned or underway |
| Ballygarvan | Cork | Ballygarvan WWTP | Red | |
| Ballymacoda | Cork | Ballymacoda WWTP | Red | |
| Beal Atha an Ghaorthaigh | Cork | Ballingeary WWTP | Red | Planned or underway |
| Bweeng | Cork | Bweeng WWTP | Red | |
| Carrignavar | Cork | Carrignavar WWTP | Red | |
| Cloyne | Cork | Cloyne WWTP | Red | Planned or underway |
| Crookhaven | Cork | Crookhaven WWTP | Red | |
| Drimoleague | Cork | Drimoleague WWTP | Red | |
| Drommahane | Cork | Dromahane WWTP | Red | |
| Dungourney | Cork | Dungourney WWTP | Red | |
| Dunmanway | Cork | Dunmanway WWTP | Red | |
| Durrus | Cork | Durrus WWTP | Red | |
| Eyeries | Cork | Eyeries WWTP | Red | |
| Garryvoe | Cork | Garryvoe WWTP | Red | |
| Glandore | Cork | Glandore WWTP | Red | |
| Glanworth | Cork | Glanworth WWTP | Red | Planned or underway |
| Glenville | Cork | Glenville WWTP | Red | |
| Goleen | Cork | Goleen WWTP * | Red | |
| Kanturk | Cork | Kanturk WWTP** | Red | Planned or underway |
| Kilcrohane | Cork | Kilcrohane WWTP | Red | |
| Kileens | Cork | Killeens WWTP | Red | Planned or underway |
| Killumney | Cork | Killumney WWTP | Red | Planned or underway |
| Kiskeam | Cork | Kiskeam WWTP | Red | |
| Leap | Cork | Leap WWTP | Red | |
| Lisgoold | Cork | Lisgoold WWTP * | Red | Planned or underway |
| Lombardstown | Cork | Lombardstown WWTP | Red | Planned or underway |
| Rosemount, Kilcully | Cork | Rosemount, Kilcully WWTP | Red | |
| Saleen | Cork | Saleen WWTP | Red | |
| Union Hall | Cork | Union Hall Septic Tank | Red | |
| An Fál Carrach | Donegal | ‐ | Red | Planned or underway |
| Ballyliffin | Donegal | Ballyliffin WWTP | Red | Planned or underway |
| Bridge End | Donegal | Bridgend WWTP | Red | Planned or underway |
| Burnfoot | Donegal | Burnfoot WWTP | Red | Planned or underway |
| Carrick | Donegal | Carrick WWTP | Red | |
| Carrigans | Donegal | St. Johnston WWTP | Red | |
| Castlefin | Donegal | Castlefinn WWTP | Red | |
| Cnoc na Muirleog | Donegal | Downings WWTP | Red | |
| Creeslough | Donegal | Creeslough WWWP | Red | |
| Dunfanaghy | Donegal | Dunfanaghy/ Portnablagh WWTP | Red | Planned or underway |
| Moville | Donegal | ‐ | Red | Planned or underway |
| Newtowncunningham | Donegal | Newtowncunningham WWTP | Red | |
| Raphoe | Donegal | Raphoe WWTP | Red | Planned or underway |
| St. Johnston | Donegal | St. Johnston WWTP | Red | |
| Newtown Cottages | Dublin | Newtown Cottages WWTP | Red | |
| Oldtown | Dublin | Oldtown WWTP | Red | Planned or underway |
| Turvey cottages | Dublin | Turvey Cottages WWTP | Red | |
| An Cheathrú Rua | Galway | ‐ | Red | Planned or underway |
| Glenamaddy | Galway | Glenamaddy WWTP | Red | |
| Roundstone | Galway | ‐ | Red | Planned or underway |
| Abbeydorney | Kerry | Abbeydorney WWTP | Red | |
| Anascaul | Kerry | Anascaul WWTP | Red | |
| Ballinskelligs | Kerry | Dungeagan/Ballinskelligs WWTP | Red | |
| Ballydavid | Kerry | Ballydavid WWTP | Red | |
| Ballyduff | Kerry | Ballyduff WWTP | Red | |
| Ballyferriter | Kerry | Ballyferriter WWTP | Red | |
| Brosna | Kerry | Brosna WWTP | Red | |
| Castlegregory | Kerry | Castlegregory WWTP | Red | |
| Causeway | Kerry | Causeway WWTP | Red | |
| Cloghane | Kerry | Cloghane WWTP | Red | |
| Duagh | Kerry | Duagh WWTP | Red | |
| Dungeagan | Kerry | Dungeagan/Ballinskelligs WWTP | Red | |
| Glenbeigh | Kerry | Glenbeigh WWTP | Red | |
| Kilfenora | Kerry | Kilfenora WWTP | Red | |
| Kilflynn | Kerry | Kilflynn WWTP | Red | |
| Moyvane | Kerry | Moyvane WWTP | Red | |
| Portmagee | Kerry | Portmagee WWTP | Red | |
| Ventry | Kerry | Ventry WWTP | Red | |
| Allenwood | Kildare | Allenwood WWTP | Red | |
| Ardclough | Kildare | Ardclough WWTP | Red | |
| Kilberry | Kildare | Kilberry (Kildare) WWTP | Red | |
| Nurney | Kildare | Nurney (Kildare) WWTP | Red | |
| Rathangan | Kildare | Rathanagn WWTP | Red | |
| Ballyhale | Kilkenny | Ballyhale WWTP | Red | |
| Ballyragget | Kilkenny | Ballyragget WWTP | Red | |
| Bennettsbridge | Kilkenny | Bennettsbridge WWTP | Red | Planned or underway |
| Clogh-chatsworth & Moneenroe | Kilkenny | Clogh ‐ Moneenroe WWTP | Red | |
| Deerpark | Kilkenny | Deerpark WWTP | Red | |
| Dungarvan | Kilkenny | Dungarvan WWTP | Red | |
| Paulstown | Kilkenny | Paulstown WWTP | Red | |
| Piltown | Kilkenny | Pilltown (Kilkenny) WWTP | Red | |
| Arless | Laois | Arless WWTP | Red | |
| Ballinakill | Laois | Ballinakill WWTP | Red | |
| Borris-in-Ossory | Laois | Borris‐in‐Ossory WWTP | Red | Planned or underway |
| Newtown Doonane | Laois | Newtown Doonane WWTP | Red | |
| Swan | Laois | Swan WWTP | Red | |
| Timahoe | Laois | Timahoe WWTP | Red | |
| Carrigallen | Leitrim | Carrigallen WWTP | Red | Planned or underway |
| Drumcong | Leitrim | Drumcong WWTP | Red | |
| Keshcarrigan | Leitrim | Keshcarrigan WWTP | Red | |
| Leitrim | Leitrim | Leitrim Village WWTP | Red | |
| Askeaton | Limerick | Askeaton WWTP | Red | Planned or underway |
| Banogue | Limerick | Banogue WWTP | Red | |
| Croagh | Limerick | Croagh WWTP | Red | |
| Dromcollagher | Limerick | Dromcollagher WWTP | Red | Planned or underway |
| Elton | Limerick | Elton WWTP | Red | |
| Murroe | Limerick | Murroe WWTP | Red | |
| Newcastle West | Limerick | Newcastle West WWTP | Red | Planned or underway |
| Oola | Limerick | Oola WWTP | Red | |
| Shanagolden | Limerick | Shanagolden WWTP * | Red | |
| Abbeylara | Longford | Abbeycourt (Abbeylara) WWTP | Red | |
| Culyfad - Woodlands Park | Longford | Culyfad ‐ Woodlands Park WWTP | Red | Planned or underway |
| Meathas Truim (Edgeworthstown) | Longford | Edgeworthstown WWTP | Red | Planned or underway |
| Blackrock | Louth | Blackrock WWTP | Red | Planned or underway |
| Greenore | Louth | Greenore WWTP | Red | |
| Tinure | Louth | Tinure WWTP | Red | Planned or underway |
| Ballyhaunis | Mayo | Ballyhaunis WWTP | Red | Planned or underway |
| Newport | Mayo | ‐ | Red | Planned or underway |
| Ardcath | Meath | Ardcath WWTP | Red | |
| Ballinabrackey | Meath | Ballinabrackey WWTP | Red | |
| Kentstown | Meath | Kentstown WWTP | Red | |
| Kilberry | Meath | Kilberry WWTP | Red | |
| Kildalkey | Meath | Kildalkey WWTP | Red | |
| Nobber | Meath | Nobber WWTP | Red | |
| Robinstown | Meath | Robinstown WWTP | Red | |
| Skreen | Meath | Skreen WWTP | Red | |
| Clontibret | Monaghan | Clontibret WWTP | Red | |
| Knockatallon | Monaghan | Knockatallon WWTP | Red | |
| Cloneygowan | Offaly | Cloneygowan WWTP | Red | Planned or underway |
| Walsh Island | Offaly | Walsh Island WWTP | Red | |
| Ballinameen | Roscommon | Ballinameen WWTP | Red | Planned or underway |
| Ballintogher | Sligo | Ballintogher WWTP | Red | |
| Ballybeg | Sligo | Ballybeg WWTP | Red | |
| Castlebaldwin | Sligo | Castlebaldwin WWTP | Red | |
| Culfadda | Sligo | Culfadda WWTP | Red | |
| Mullaghmore | Sligo | Mullaghmore WWTP | Red | Planned or underway |
| Borrisokane | Tipperary | Borrisokane WWTP | Red | |
| Cloughjordan | Tipperary | Cloughjordan WWTP | Red | Planned or underway |
| Golden | Tipperary | Golden WWTP * | Red | |
| Hollyford | Tipperary | Hollyford WWTP | Red | |
| Holycross | Tipperary | Holycross WWTP | Red | |
| Newcastle | Tipperary | Newcastle WWTP | Red | |
| Silvermines | Tipperary | Silvermines WWTP | Red | |
| Bonmahon | Waterford | Bonmahon WWTP * | Red | Planned or underway |
| Fourmilewater | Waterford | Fourmilewater WWTP | Red | |
| Kilmacomma | Waterford | Kilmacomma WWTP | Red | |
| Lemybrien | Waterford | Lemybrien WWTP | Red | Planned or underway |
| Pilltown | Waterford | Pilltown WWTP | Red | |
| Tooraneena | Waterford | Tooraneena WWTP | Red | |
| Rathowen | Westmeath | Rathowen WWTP | Red | |
| Adamstown | Wexford | Adamstown WWTP | Red | |
| Ballindaggin | Wexford | Ballindaggin WWTP | Red | |
| Ballycanew | Wexford | Ballycanew WWTP | Red | |
| Boleyvogue | Wexford | Boleyvogue WWTP | Red | |
| Camolin | Wexford | Camolin WWTP* | Red | |
| Campile | Wexford | Campile WWTP | Red | |
| Clongeen | Wexford | Clongeen WWTP | Red | |
| Davidstown | Wexford | Davidstown WWTP | Red | |
| Fetherd on Sea | Wexford | Fetherd‐on‐Sea WWTP | Red | |
| Killinierin | Wexford | Killinierin WWTP | Red | |
| Roche's Garden | Wexford | Roche's Garden WWTP | Red | |
| Wellingtonbridge | Wexford | Wellingtonbridge WWTP | Red | Planned or underway |
| Aughrim | Wicklow | Aughrim WWTP | Red | Planned or underway |
| Ballinteskin | Wicklow | Ballinteskin WWTP | Red | |
| Kilpedder | Wicklow | Kilpedder WWTP | Red | |
| Newcastle | Wicklow | Newcastle (Wicklow) WWTP | Red | |
| Palatine | Carlow | Palatine WWTP | Amber | |
| Arva | Cavan | Arvagh WWTP | Amber | |
| Bailieborough | Cavan | Bailieborough WWTP | Amber | Planned or underway |
| Ballinagh | Cavan | Ballinagh WWTP | Amber | |
| Ballyhaise | Cavan | Ballyhaise WWTP | Amber | |
| Blacklion | Cavan | Blacklion WWTP | Amber | |
| Kilnaleck | Cavan | Kilnaleck WWTP | Amber | |
| Mullagh | Cavan | Mullagh WWTP | Amber | Planned or underway |
| Ballycannon | Clare | Limerick WWTP | Amber | Planned or underway |
| Doonbeg | Clare | Doonbeg WWTP | Amber | Planned or underway |
| Ennis | Clare | Clareabbey WWTP | Amber | Planned or underway |
| Ennistimon | Clare | Ennistymon WWTP | Amber | Planned or underway |
| Lehinch | Clare | Lahinch WWTP | Amber | Planned or underway |
| Tulla | Clare | Tulla WWTP | Amber | |
| Ballinspittle (north) | Cork | Ballinspittle Septic Tank | Amber | Planned or underway |
| Ballydehob | Cork | Ballydehob WWTP | Amber | |
| Ballyhooly | Cork | Ballyhooley WWTP | Amber | |
| Banteer | Cork | Banteer WWTP | Amber | |
| Belgooly | Cork | Riverbank Estate WWTP* | Amber | Planned or underway |
| Castlelyons | Cork | Castlelyons WWTP | Amber | |
| Castletownroche | Cork | Castletownroche WWTP | Amber | |
| Charleville | Cork | Charleville WWTP | Amber | |
| Churchtown | Cork | Churchtown WWTP | Amber | |
| Clondulane | Cork | Clondulane WWTP | Amber | |
| Conna | Cork | Conna WWTP | Amber | |
| Glengarriff | Cork | Glengarriff Septic Tank | Amber | |
| Killeagh | Cork | Killeagh WWTP | Amber | |
| Kilworth | Cork | Kilworth WWTP | Amber | |
| Knockglass | Cork | Ladysbridge WWTP | Amber | |
| Mitchelstown | Cork | Mitchelstown WWTP | Amber | Planned or underway |
| Rathcormac | Cork | Rathcormac WWTP | Amber | |
| Riverstick | Cork | Riverstick WWTP | Amber | |
| Rosscarbery | Cork | Rosscarbery & Owenahincha* | Amber | |
| Skibbereen | Cork | Skibbereen WWTP | Amber | |
| Watergrasshill | Cork | Watergrasshill WWTP | Amber | |
| Bunbeg-Derrybeg | Donegal | Bunbeg-Derrybeg | Amber | |
| Carndonagh | Donegal | Carndonagh/Malin WWTP | Amber | |
| Clonmany | Donegal | Clonmany WWTP | Amber | |
| Fahan | Donegal | Fahan WWTP | Amber | Planned or underway |
| Kildrum | Donegal | Killea WWTP | Amber | |
| Manorcunningham | Donegal | Manorcunningham WWTP | Amber | |
| Rossnowlagh | Donegal | Rossnowlagh WWTP | Amber | |
| Athenry | Galway | Athenry WWTP | Amber | |
| Loughrea | Galway | Loughrea WWTP | Amber | |
| Fenit | Kerry | Fenit WWTP | Amber | Planned or underway |
| Rathmore | Kerry | Rathmore WWTP | Amber | |
| Derrinturn | Kildare | Deerinturn WWTP | Amber | Planned or underway |
| Kilmeague | Kildare | Kilmeague WWTP | Amber | |
| Fiddown | Kilkenny | Fiddown WWTP | Amber | |
| Clonaslee | Laois | Clonaslee WWTP | Amber | |
| Mountmellick | Laois | Mountmellick WWTP | Amber | |
| Drumshanbo | Leitrim | Drumshanbo WWTP | Amber | |
| Mohill | Leitrim | Mohill WWTP | Amber | |
| Adare | Limerick | Adare WWTP*** | Amber | Planned or underway |
| Ballingarry | Limerick | Ballingarry (County Limerick) WWTP | Amber | |
| Cappamore | Limerick | Cappamore WWTP | Amber | |
| Croom | Limerick | Croom WWTP**** | Amber | |
| Doon | Limerick | Doon WWTP | Amber | |
| Kilfinnane | Limerick | Kilfinnane WWTP | Amber | |
| Pallaskenry | Limerick | Pallaskenry WWTP | Amber | |
| Clogherhead | Louth | Clogherhead WWTP | Amber | |
| Collon | Louth | Collon WWTP | Amber | |
| Dunleer | Louth | Dunleer WWTP | Amber | |
| Balla | Mayo | Balla WWTP | Amber | |
| Ballindine | Mayo | Ballindine WWTP | Amber | |
| Doogort | Mayo | Doogort WWTP | Amber | Planned or underway |
| Keel-Dooagh | Mayo | Achill Island Central WWTP | Amber | |
| Louisburgh | Mayo | Louisbourgh WWTP | Amber | |
| Carlanstown | Meath | Carlanstown WWTP | Amber | |
| Summerhill | Meath | Summerhill WWTP | Amber | |
| Ballybay | Monaghan | Ballybay WWTP | Amber | |
| Castleblayney | Monaghan | Castleblaney WWTP | Amber | |
| Clones | Monaghan | Clones WWTP | Amber | |
| Glaslough | Monaghan | Glaslough WWTP | Amber | |
| Monaghan | Monaghan | Monaghan WWTP | Amber | |
| Newbliss | Monaghan | Newbliss WWTP | Amber | |
| Oram | Monaghan | Oram WWTP | Amber | Planned or underway |
| Edenderry | Offaly | Edenderry WWTP | Amber | Planned or underway |
| Castlerea | Roscommon | Castlerea WWTP | Amber | |
| Monksland (Athlone) | Roscommon | Monksland WWTP | Amber | |
| Roscommon | Roscommon | Roscommon WWTP | Amber | |
| Ballisodare | Sligo | Ballysadare WWTP | Amber | |
| Cliffoney | Sligo | Cliffoney WWTP | Amber | Planned or underway |
| Inniscrone | Sligo | Enniscrone WWTP | Amber | |
| Strandhill | Sligo | Strandhill WWTP | Amber | |
| Cashel | Tipperary | Cashel WWTP | Amber | Planned or underway |
| Lisvarrinane | Tipperary | Lisvarrinane WWTP | Amber | Planned or underway |
| Mullinahone | Tipperary | Mullinahone WWTP | Amber | |
| Roscrea | Tipperary | Roscrea WWTP | Amber | |
| Tipperary | Tipperary | Tipperary Town WWTP | Amber | |
| Twomileborris | Tipperary | Twomileborris WWTP | Amber | |
| Crooke | Waterford | Crooke WWTP** | Amber | |
| Ballymore | Westmeath | Ballymore WWTP | Amber | Planned or underway |
| Collinstown | Westmeath | Collinstown WWTP | Amber | |
| Rochfortbridge | Westmeath | Rochfortbridge WWTP | Amber | |
| Ballaghkeen/Ballagh | Wexford | Ballaghkeen WWTP* | Amber | |
| Ferns | Wexford | Ferns South WWTP* | Amber | |
| Rosslare Strand | Wexford | Rosslare Strand WWTP*** | Amber | |
| Carnew | Wicklow | Carnew WWTP | Amber | |
| Laragh | Wicklow | Laragh WWTP | Amber | |
| Ardattin | Carlow | Ardattin WWTP | Green | |
| Ballinkilleno | Carlow | Ballinkilleno WWTP | Green | |
| Ballon | Carlow | Ballon WWTP | Green | |
| Borris | Carlow | Borris WWTP | Green | |
| Bunclody-Carrickduff | Carlow | Bunclody WWTP | Green | |
| Carlow | Carlow | Carlow WWTP | Green | Planned or underway |
| Clonmore (CW) | Carlow | Clonmore (CW) WWTP | Green | |
| Fenagh | Carlow | Fenagh (Carlow) WWTP | Green | |
| Graiguenamanagh-Tinnahinch | Carlow | Graignamanagh WWTP | Green | |
| Hacketstown | Carlow | Hacketstown WWTP | Green | |
| Kildavin | Carlow | Kildavin WWTP | Green | Planned or underway |
| Muinebheag & Leighlinbridge | Carlow | Muinebheag & Leighlinbridge WTTP | Green after works | Planned or underway |
| Myshall | Carlow | Myshall WWTP | Green | |
| Old Leighlin | Carlow | Old Leighlin WWTP | Green | |
| Rathoe | Carlow | Rathoe WWTP | Green | |
| Rathvilly | Carlow | Rathvilly WWTP | Green | |
| St Mullins | Carlow | St Mullins WWTP | Green | |
| Tiknock | Carlow | Tiknock WWTP | Green | |
| Tinryland | Carlow | Tinryland WWTP | Green | Planned or underway |
| Tullow | Carlow | Tullow WWTP | Green | Planned or underway |
| Ballyconnell | Cavan | Ballyconnell WWTP | Green after works | Planned or underway |
| Ballyjamesduff | Cavan | Ballyjamesduff WWTP | Green after works | Planned or underway |
| Belturbet | Cavan | Belturbet WWTP | Green | |
| Butlersbridge | Cavan | Butlersbridge WWTP | Green | |
| Cavan | Cavan | Cavan WWTP | Green | |
| Cootehill | Cavan | Cootehill WWTP | Green | Planned or underway |
| Crosskeys | Cavan | Crosskeys WWTP | Green | |
| Dowra | Cavan | Dowra WWTP | Green | |
| Gowna | Cavan | Gowna WWTP | Green | |
| Kilcogy | Cavan | Kilcogy WWTP | Green | |
| Killeshandra | Cavan | Killeshandra WWTP | Green | |
| Mountnugent | Cavan | Mountnugent WWTP | Green | |
| Redhills | Cavan | Redhills WWTP | Green | |
| Shercock | Cavan | Shercock WWTP | Green | |
| Stradone | Cavan | Stradone WWTP | Green | |
| Swanlinbar | Cavan | Swanlinbar WWTP | Green | |
| Virginia | Cavan | Virginia WWTP | Green after works | Planned or underway |
| Ballynacally | Clare | Ballynacally H.E. WWTP | Green | |
| Ballyvaughan | Clare | ‐ | Green after works | Planned or underway |
| Clonlara | Clare | Limerick WWTP | Green | Planned or underway |
| Corofin | Clare | Corofin WWTP | Green | |
| Crusheen | Clare | Crusheen WWTP | Green | |
| Ennis | Clare | Ennis North WWTP | Green | Planned or underway |
| Feakle | Clare | Feakle WWTP | Green | |
| Inagh | Clare | Inagh WWTP | Green | |
| Kilfenora | Clare | Kilfenora WWTP | Green | |
| Kilkee | Clare | Kilkee WWTP | Green | Planned or underway |
| Killaloe | Clare | Ballina (Tipperary) WWTP | Green | Planned or underway |
| Killimer | Clare | Killimer WWTP | Green | |
| Kilmihil | Clare | Kilmihil WWTP | Green | Planned or underway |
| Kilrush | Clare | ‐ | Green | Planned or underway |
| Limerick City and suburbs | Clare | Limerick WWTP | Green | Planned or underway |
| Liscannor | Clare | Liscannor WWTP | Green | |
| Lisdoonvarna | Clare | Lisdoonvarna WWTP | Green | |
| Mountshannon | Clare | Mountshannon WWTP | Green | |
| Newmarket on Fergus | Clare | Newmarket on Fergus WWTP | Green | Planned or underway |
| Quilty | Clare | Kilmurry Ibrickane WWTP | Green | |
| Quin | Clare | Quin WWTP | Green | |
| Scarriff-Tuamgraney | Clare | Scarriff WWTP | Green | |
| Shannon | Clare | Shannon Town WWTP | Green | |
| Sixmilebridge | Clare | Sixmilebridge WWTP | Green | |
| Whitegate | Clare | Whitegate WWTP | Green | |
| Aghabullogue | Cork | Aghabullogue WWTP | Green | |
| Annaghmore | Cork | Annaghmore WWTP | Green | |
| Ardgroom | Cork | Ardgroom WWTP | Green | |
| Baile Mhic Ire | Cork | Ballymakeera WWTP | Green | |
| Ballinagree | Cork | Ballinagree WWTP | Green | |
| Ballincollig | Cork | Ballincollig WWTP | Green | |
| Ballindangan | Cork | Ballindangan WWTP | Green | |
| Ballineen/Enniskeane | Cork | Ballineen/Enniskean WWTP | Green | Planned or underway |
| Ballyclogh | Cork | Ballyclough WWTP | Green | |
| Ballycotton | Cork | Ballycotton WWTP | Green after works | Planned or underway |
| Ballydesmond | Cork | Ballydesmond WWTP | Green | Planned or underway |
| Ballyhea | Cork | Ballyhea WWTP | Green | |
| Ballynoe | Cork | Ballynoe WWTP | Green | |
| Baltimore | Cork | Baltimore WWTP | Green | |
| Bandon | Cork | Bandon WWTP | Green | |
| Bantry | Cork | Bantry WWTP | Green | |
| Bartlemy | Cork | Bartlemy WWTP | Green | |
| Blarney | Cork | Blarney WWTP | Green | |
| Boherbue | Cork | Boherbue WWTP | Green | Planned or underway |
| Bridesbridge | Cork | Bridesbridge WWTP | Green | |
| Buttevant | Cork | Buttevant WWTP | Green | |
| Cahermore | Cork | Cahermore WWTP | Green | |
| Carrigaline | Cork | Cork Lower Harbour WWTP | Green | |
| Carrigtwohill | Cork | Carrigtohill WWTP | Green | |
| Castlemagner | Cork | Castlemaginer WWTP | Green | Planned or underway |
| Castlemartyr | Cork | Castlemartyr WWTP | Green after works | Planned or underway |
| Castletownbere | Cork | Castletownbere WWTP | Green | |
| Castletownshend | Cork | Castletownshend WWTP | Green | Planned or underway |
| Cecilstown | Cork | Cecilstown WWTP | Green | |
| Cill Na Martra | Cork | Cill Na Martra WWTP | Green | |
| Clonakilty | Cork | Clonakilty WWTP | Green | |
| Clondrohid | Cork | Clondrohid WWTP * | Green | |
| Cloughduv | Cork | Cloughduv WWTP | Green | |
| Coachford | Cork | Coachford WWTP | Green | |
| Cobh | Cork | Cork Lower Harbour WWTP | Green | |
| Coolcower | Cork | Coolcower WWTP | Green | |
| Coole East | Cork | Coole East WWTP | Green | |
| Coolea near Macroom | Cork | Coolea near Macroom WWTP | Green | |
| Coppeen | Cork | Coppeen WWTP | Green | |
| Cork City | Cork | Carrigrennan WWTP | Green | |
| Courtmacsherry | Cork | Courtmacsherry WWTP | Green | |
| Crookstown | Cork | Crookstown WWTP * | Green | |
| Cullen | Cork | Cullen WWTP * | Green | |
| Dernagree | Cork | Dernagree WWTP | Green | |
| Doneraile | Cork | Doneraile WWTP | Green | |
| Drinagh | Cork | Drinagh WWTP | Green | |
| Dromina | Cork | Dromina WWTP | Green | |
| Fermoy | Cork | Fermoy WWTP | Green | |
| Freemount | Cork | Freemount WWTP | Green | |
| Glantane | Cork | Glantane WWTP | Green | |
| Grenagh | Cork | Grenagh WWTP | Green | |
| Halfway | Cork | Halfway WWTP | Green | |
| Inchigeelagh | Cork | Inchigeelagh WWTP | Green | |
| Inniscarra | Cork | Inniscarra WWTP | Green | |
| Innishannon | Cork | Innishannon Septic Tank | Green | |
| Kealkill | Cork | Kealkill WWTP * | Green | |
| Kerry Pike | Cork | Blarney WWTP | Green | |
| Kilbrin | Cork | Kilbrin WWTP | Green | |
| Kilbrittain | Cork | Kilbrittain WWTP | Green | |
| Kilcorney | Cork | Kilcorney WWTP | Green | |
| Kildorrery | Cork | Kildorrery WWTP | Green | |
| Killavullen | Cork | Killavullen WWTP | Green | |
| Kilmacsimon | Cork | Kilmacsimon WWTP | Green | |
| Kilmurry | Cork | Kilmurry WWTP | Green | |
| Kinsale | Cork | Kinsale WWTP*** | Green | |
| Knocknagree | Cork | Knocknagree WWTP | Green | |
| Knockraha | Cork | Knockraha WWTP * | Green | |
| Liscarroll | Cork | Liscarroll WWTP | Green | |
| Lyre | Cork | Lyre WWTP | Green | |
| Macroom | Cork | Macroom WWTP | Green | Planned or underway |
| Mallow | Cork | Mallow WWTP | Green | Planned or underway |
| Meelin | Cork | Meelin WWTP | Green | |
| Midleton | Cork | Midleton WWTP | Green | Planned or underway |
| Milford | Cork | Milford WWTP | Green | |
| Millstreet | Cork | Millstreet WWTP | Green | |
| Minane Bridge | Cork | Minane Bridge WWTP * | Green | |
| Model Village or Dripsey | Cork | Dripsey WWTP | Green | |
| Mogeely | Cork | Mogeely | Green | |
| Nad | Cork | Nad WWTP | Green | |
| Newmarket | Cork | Newmarket WWTP | Green | |
| Newtownshandrum | Cork | Newtownshandrum WWTP | Green | |
| North Cobh | Cork | North Cobh WWTP | Green | |
| Passage West | Cork | Cork Lower Harbour WWTP | Green | |
| Rathcoole | Cork | Rathcoole WWTP | Green | |
| Ring | Cork | Ring WWTP | Green | |
| Ringaskiddy-Loughbeg | Cork | Cork Lower Harbour WWTP | Green | |
| Rockchapel | Cork | Rockchapel WWTP | Green | |
| Rossmore | Cork | Rossmore WWTP | Green | |
| Rylane | Cork | Rylane WWTP | Green | |
| Schull | Cork | Schull WWTP | Green | |
| Shanballymore | Cork | Shanballymore WWTP | Green | |
| Shannonvale | Cork | Shannonvale WWTP | Green | |
| Sherkin Island | Cork | Sherkin Island WWTP | Green | |
| Timoleague | Cork | Courtmacsherry WWTP | Green | |
| Tower | Cork | Blarney WWTP | Green | |
| Tragumna | Cork | Tragumna WWTP | Green | |
| Tullylease | Cork | Tullylease WWTP | Green | |
| Whitegate & Aghada/ Farsid/ Rostellan | Cork | Whitegate - Aghada WWTP | Green after works | Planned or underway |
| Youghal | Cork | Youghal WWTP | Green | |
| An Clochán Liath | Donegal | Dungloe WWTP | Green | |
| Annagary | Donegal | Annagary WWTP | Green | |
| Ardara | Donegal | Ardara WWTP | Green | |
| Ballintra | Donegal | Ballintra WWTP | Green | Planned or underway |
| Ballybofey-Stranorlar | Donegal | Ballybofey/Stranorlar WWTP | Green | |
| Ballyshannon | Donegal | Ballyshannon WWTP | Green | |
| Buncrana | Donegal | Buncrana WWTP | Green | Planned or underway |
| Bundoran | Donegal | Bundoran WWTP | Green | |
| Burtonport | Donegal | Burtonport WWTP | Green | |
| Carraig Airt | Donegal | Carrigart Village WWTP | Green | Planned or underway |
| Cill Charthaigh | Donegal | Kilcar WWTP | Green | |
| Cloghan/Brockagh | Donegal | Cloghan/Brockagh WWTP | Green | |
| Convoy | Donegal | Convoy WWTP | Green | |
| Coolatee | Donegal | ‐ | Green | Planned or underway |
| Culdaff | Donegal | Culdaff WWTP | Green | |
| Donegal | Donegal | Donegal Town WWTP | Green | |
| Doochary | Donegal | Doochary WWTP | Green | |
| Drumkeen | Donegal | Drumkeen WWTP | Green | |
| Dunkineeley | Donegal | Dunkineeley WWTP | Green | |
| Glencolmcille | Donegal | Glencolmcille WWTP | Green | |
| Gleneely | Donegal | Gleneely WWTP | Green | |
| Glenties | Donegal | Glenties WWTP | Green | |
| Gortahork | Donegal | Gortahork WWTP | Green | |
| Kerrykeel | Donegal | Kerrykeel HS WWTP | Green | |
| Killybegs | Donegal | Killybegs WWTP | Green | |
| Killygordan | Donegal | Killygordon WWTP | Green | |
| Kilmacrennan | Donegal | Kilmacrennan WWTP | Green after works | Planned or underway |
| Letterkenny | Donegal | Letterkenny WWTP | Green | |
| Lifford | Donegal | Lifford WWTP | Green | |
| Milford | Donegal | Milford (Donegal) WWTP | Green after works | Planned or underway |
| Mountcharles | Donegal | Mountcharles WWTP | Green after works | Planned or underway |
| Muff | Donegal | ‐ | Green | |
| Pettigo | Donegal | Pettigo WWTP | Green | Planned or underway |
| Ramelton | Donegal | ‐ | Green after works | Planned or underway |
| Rathmullen | Donegal | ‐ | Green after works | Planned or underway |
| Tory Island | Donegal | Tory Island WWTP | Green | |
| Balbriggan | Dublin | Barnageeragh WWTP | Green | |
| Ballyboghil | Dublin | Ballyboghil WWTP | Green | |
| Brittas | Dublin | Ringsend WWTP | Green | Planned or underway |
| Colecot Cottages | Dublin | Colecot Cottages WWTP | Green | |
| Donabate | Dublin | Portrane/Donabate WWTP | Green | |
| Dublin City and Suburbs | Dublin | Ringsend WWTP | Green | Planned or underway |
| Dublin City and Suburbs | Dublin | Ringsend WWTP | Green | Planned or underway |
| Dun Laoghaire / Rathdown | Dublin | Shanganagh WWTP | Green | |
| Dun Laoghaire / Rathdown | Dublin | Ringsend WWTP | Green | Planned or underway |
| Garristown | Dublin | Garristown WWTP | Green | |
| Kinsealy-Drinan | Dublin | Swords WWTP | Green | |
| Lusk | Dublin | Portrane/Donabate WWTP | Green | |
| Malahide | Dublin | Malahide WWTP | Green | Planned or underway |
| Naul | Dublin | Naul WWTP | Green | Planned or underway |
| Newcastle | Dublin | Ringsend WWTP | Green | Planned or underway |
| Portmarnock | Dublin | Ringsend WWTP | Green | Planned or underway |
| Rathcoole | Dublin | Ringsend WWTP | Green | Planned or underway |
| Rush | Dublin | Portrane/Donabate WWTP | Green | |
| Saggart | Dublin | Ringsend WWTP | Green | Planned or underway |
| Skerries | Dublin | Barnageeragh WWTP | Green | |
| Swords | Dublin | Swords WWTP | Green | |
| Ahascragh | Galway | Ahascragh | Green | |
| An Spidéal | Galway | ‐ | Green | |
| Baile Chláir | Galway | Claregalway WWTP | Green | |
| Ballinasloe | Galway | Ballinasloe WWTP | Green | |
| Ballygar | Galway | Ballygar WWTP | Green | Planned or underway |
| Ballymoe | Galway | Ballymoe WWTP | Green | Planned or underway |
| Bearna | Galway | Mutton Island WWTP | Green | |
| Clifden | Galway | Clifden WWTP | Green | |
| Clonbur | Galway | Clonbur WWTP | Green | |
| Dunmore | Galway | Dunmore WWTP | Green | |
| Eyrecourt | Galway | Eyrecourt WWTP | Green | Planned or underway |
| Galway City and Suburbs | Galway | Mutton Island WWTP | Green | |
| Gort | Galway | Gort WWTP | Green | |
| Headford | Galway | Headford WWTP | Green | |
| Kilkerrin | Galway | Kilkerrin WWTP | Green | |
| Killimor | Galway | Killimor WWTP | Green | |
| Kilronan Cottages | Galway | Kilronan Cottages WWTP | Green | |
| Kinvara | Galway | Kinvara WWTP | Green | |
| Leenane | Galway | Leenane WWTP | Green | |
| Letterfrack | Galway | Letterfrack WWTP | Green | |
| Maigh Cuilinn | Galway | Moycullen WWTP | Green | |
| Milltown | Galway | Milltown WWTP | Green | |
| Mount Bellew | Galway | Mountbellew WWTP | Green | Planned or underway |
| Moylough | Galway | Moylough WWTP | Green | |
| Newbridge | Galway | Newbridge WWTP | Green | |
| Oranmore | Galway | Mutton Island WWTP | Green | |
| Oughterard | Galway | Oughterard WWTP | Green | |
| Portumna | Galway | Portumna WWTP | Green | |
| Tuam | Galway | Tuam WWTP | Green | |
| Williamstown | Galway | Williamstown WWTP | Green | |
| Woodford | Galway | Woodford WWTP | Green | |
| Ardfert | Kerry | Ardfert WWTP | Green | |
| Ballybunion | Kerry | Ballybunion WWTP | Green | |
| Ballyheigue | Kerry | Ballyheigue WWTP | Green | |
| Ballylongford | Kerry | Ballylongford WWTP (new) | Green | |
| Barraduff | Kerry | Barraduff WWTP | Green | |
| Cahirciveen | Kerry | Cahersiveen WWTP | Green | |
| Castleisland | Kerry | Castleisland WWTP | Green | |
| Castlemaine | Kerry | Castlemaine WWTP | Green | |
| Dingle-Daingean Uí Chuis | Kerry | Dingle WWTP | Green | |
| Farranfore | Kerry | Farranfore WWTP | Green | |
| Feohanagh | Kerry | Feohanagh WWTP | Green | |
| Fieries | Kerry | Fieries WWTP | Green | |
| Gneeveguilla | Kerry | Gneeveguilla WWTP | Green | |
| Kenmare | Kerry | Kenmare WWTP | Green after works | Planned or underway |
| Kilgarvan | Kerry | Kilgarvan WWTP | Green | |
| Killarney | Kerry | Killarney WWTP | Green | |
| Killorglin | Kerry | Killorglin WWTP | Green | |
| Knightstown | Kerry | Knightstown WWTP | Green after works | Planned or underway |
| Knocknagoshel | Kerry | Knocknagoshel WWTP | Green | |
| Listowel | Kerry | Listowel WWTP | Green | |
| Lixnaw | Kerry | Lixnaw WWTP | Green | |
| Milltown | Kerry | Milltown WWTP (new) | Green | |
| Murreagh | Kerry | Murreagh WWTP | Green | |
| Rossbeigh | Kerry | Rossbeigh WWTP | Green | |
| Sneem | Kerry | Sneem WWTP | Green | |
| Tarbert | Kerry | Tarbert WWTP (new) | Green | |
| Tralee | Kerry | Tralee WWTP | Green | |
| Waterville-Spunkane | Kerry | Waterville WWTP (new) | Green | |
| Athy | Kildare | Athy WWTP | Green | |
| Ballitore | Kildare | Ballitore WWTP | Green | |
| Ballymore Eustace | Kildare | Ballymore Eustace WWTP | Green | |
| Ballyroe | Kildare | Ballyroe 1 WWTP | Green | |
| Ballyroe | Kildare | Ballyroe 2 WWTP | Green | |
| Brannockstown (Grangemore) | Kildare | Brannockstown WWTP | Green | |
| Calverstown | Kildare | Calverstown WWTP | Green | |
| Castledermot | Kildare | Castledermot WWTP | Green | |
| Castlemitchell | Kildare | Castlemitchell WWTP | Green | |
| Castleroe West | Kildare | Castleroe West WWTP | Green | |
| Celbridge | Kildare | LLVSS WWTP Leixlip | Green | |
| Clane | Kildare | ULLVSS WWTP Osberstown | Green | |
| Clogherinkoe | Kildare | Clogherinkoe WWTP | Green | |
| Clonuff | Kildare | Clonuff WWTP | Green | |
| Coill Dubh | Kildare | Coill Dubh WWTP | Green | |
| Donore | Kildare | Donore (Kildare) WWTP | Green | |
| Droichead Nua | Kildare | ULLVSS WWTP Osberstown | Green | |
| Johnstown Bridge | Kildare | Enfield WWTP (Meath) | Green after works | Planned or underway |
| Kildangan 2 | Kildare | Kildangan 2 WWTP | Green | |
| Kildare | Kildare | Kildare Town WWTP | Green | |
| Kilkea | Kildare | Kilkea WWTP | Green | |
| Kilmead | Kildare | Kilmeade WWTP | Green | |
| Leixlip | Kildare | LLVSS WWTP Leixlip | Green | |
| Maynooth | Kildare | LLVSS WWTP Leixlip | Green | |
| Milltown | Kildare | Milltown(Fenview Heights) WWTP | Green | |
| Milltown | Kildare | Milltown(Millview) WWTP | Green | |
| Monasterevin | Kildare | Monasterevin WWTP | Green | |
| Naas | Kildare | ULLVSS WWTP Osberstown | Green | |
| Newtown | Kildare | Newtown (Kildare) WWTP | Green | |
| Rathcoffey - Moortown Drive | Kildare | Rathcoffey (Moortown Drive) WWTP | Green | |
| Robertstown | Kildare | Robertstown WWTP | Green | |
| Sallins | Kildare | ULLVSS WWTP Osberstown | Green | |
| Ticknevin, Abbey Court | Kildare | Ticknevin, Abbey Court WWTP | Green | |
| Timolin | Kildare | Timolin WWTP | Green | Planned or underway |
| Ballygriffin | Kilkenny | Ballygriffin WWTP | Green | |
| Callan | Kilkenny | Callan WWTP | Green | |
| Castlecomer-Donaguile | Kilkenny | Castlecomer WWTP | Green | |
| Coan | Kilkenny | Coan WWTP | Green | |
| Dunnamaggin | Kilkenny | Dunnamaggin WWTP | Green | |
| Freshford | Kilkenny | Freshford WWTP | Green | |
| Glenmore | Kilkenny | Glenmore WWTP | Green | |
| Goresbridge | Kilkenny | Goresbridge WWTP | Green | |
| Gowran | Kilkenny | Gowran WWTP | Green | |
| Graiguenamanagh-Tinnahinch | Kilkenny | Graignamanagh WWTP | Green | |
| Inistioge | Kilkenny | Inistioge WWTP | Green | |
| Johnstown | Kilkenny | Johnstown WWTP | Green | |
| Kells | Kilkenny | Kells WWTP | Green | |
| Kilkenny | Kilkenny | Kilkenny City and Environs WWTP | Green | |
| Kilmacow | Kilkenny | Kilmacow WWTP | Green | |
| Kilmaganny | Kilkenny | Kilmaganny WWTP | Green | Planned or underway |
| Kilmanagh | Kilkenny | Kilmanagh WWTP | Green | |
| Mooncoin | Kilkenny | Mooncoin WWTP | Green | |
| Mullinavat | Kilkenny | Mullinavat WWTP | Green | |
| Skeaghvosteen | Kilkenny | Skeaghvosteen WWTP | Green | |
| Stonyford | Kilkenny | Stonyford WWTP | Green | |
| Thomastown | Kilkenny | Thomastown (Kilkenny) WWTP | Green | |
| Tullaroan | Kilkenny | Tullaroan WWTP | Green | |
| Urlingford | Kilkenny | Urlingford WWTP | Green | |
| Windgap | Kilkenny | Windgap WWTP | Green | |
| Abbeyleix | Laois | Abbeyleix WWTP | Green | |
| Ballacolla | Laois | Ballacolla WWTP | Green | |
| Ballybrittas | Laois | Ballybrittas WWTP | Green | |
| Ballylinan | Laois | Ballylinan WWTP | Green | |
| Ballyroan | Laois | Ballyroan WWTP | Green | Planned or underway |
| Camross | Laois | Camross WWTP | Green | |
| Capalug | Laois | Capalug WWTP | Green | |
| Castletown | Laois | Castletown (Laois) WWTP | Green | |
| Clough | Laois | Clough WWTP | Green | |
| Coolanagh | Laois | Coolanagh WWTP | Green | |
| Coolrain | Laois | Coolrain WWTP | Green | |
| Durrow | Laois | Durrow WWTP | Green | |
| Emo | Laois | Emo WWTP | Green | |
| Errill | Laois | Errill WWTP | Green | |
| Kileen | Laois | Kileen WWTP | Green | |
| Mountrath | Laois | Mountrath WWTP | Green | |
| Portarlington | Laois | Portarlington WWTP | Green | |
| Portlaoise | Laois | Portlaoise WWTP | Green | Planned or underway |
| Rathdowney | Laois | Rathdowney WWTP | Green | |
| Rosenallis | Laois | Rosenallis WWTP | Green | |
| Stradbally | Laois | Stradbally (Laois) WWTP | Green | |
| Aughnasheelan | Leitrim | Aughnasheelan WWTP | Green | |
| Ballinagleragh | Leitrim | Ballinagleragh WWTP | Green | |
| Ballinamore | Leitrim | Ballinamore WWTP | Green | |
| Carrick on Shannon | Leitrim | Carrick‐on‐Shannon WWTP | Green | |
| Cloone | Leitrim | Cloone WWTP | Green | |
| Dromahair | Leitrim | Dromahair WWTP | Green | |
| Dromod | Leitrim | Dromod WWTP | Green | |
| Drumkeeran | Leitrim | Drumkeeran WWTP | Green | |
| Drumsna | Leitrim | Drumsna WWTP | Green | |
| Fenagh | Leitrim | Fenagh WWTP | Green | |
| Jamestown | Leitrim | Jamestown WWTP | Green | |
| Killarga | Leitrim | Killarga WWTP | Green | |
| Kiltyclogher | Leitrim | Kiltyclogher WWTP | Green | |
| Kinlough | Leitrim | Kinlough WWTP | Green | |
| Manorhamilton | Leitrim | Manorhamilton WWP | Green | |
| Newtowngore | Leitrim | Newtowngore WWTP | Green | |
| Tullaghan | Leitrim | Bundoran WWTP | Green | |
| Abbeyfeale | Limerick | Abbeyfeale WWTP | Green | |
| Ardagh (LK) | Limerick | Ardagh WWTP | Green | |
| Askeaton Housing Estate | Limerick | Askeaton Housing Estate (Lismakeera) WWTP | Green | |
| Athea | Limerick | Athea WWTP | Green | |
| Ballyagran | Limerick | Ballyagran WWTP | Green | |
| Ballyhahill | Limerick | Ballyhahill WWTP | Green | |
| Ballylanders | Limerick | Ballylanders WWTP | Green | |
| Broadford | Limerick | Broadford WWTP | Green | |
| Brookhaven | Limerick | Brookhaven, Montpelier WWTP | Green | |
| Bruff | Limerick | Bruff WWTP | Green | |
| Bruree | Limerick | Bruree WWTP | Green | |
| Caherconlish | Limerick | Caherconlish WWTP | Green | |
| Carrigkerry | Limerick | Carrigkerry WWTP | Green | |
| Castlemahon | Limerick | Castlemahon WWTP** | Green | |
| Cluaindara (Anglesborough) | Limerick | Cluaindara (Anglesborough) WW | Green | |
| Fedamore | Limerick | Fedamore WWTP | Green | |
| Feenagh | Limerick | Feenagh WWTP | Green | |
| Foynes | Limerick | ‐ | Green | Planned or underway |
| Galbally | Limerick | Galbally WWTP | Green | Planned or underway |
| Glenfield | Limerick | Kilmallock WWTP | Green | |
| Glin | Limerick | ‐ | Green | Planned or underway |
| Herbertstown | Limerick | Herbertstown WWTP | Green | |
| Hospital | Limerick | Hospital WWTP | Green | Planned or underway |
| Kilbeheny (Knockrour) | Limerick | Kilbeheny (Knockrour) WWTP | Green | |
| Killmallock | Limerick | Kilmallock WWTP | Green | |
| Kilmeedy | Limerick | Kilmeedy WWTP | Green | |
| Kilteely | Limerick | Kilteely WWTP | Green | |
| Knocklong | Limerick | Knocklong WWTP | Green | |
| Limerick City and suburbs | Limerick | Limerick WWTP*** | Green | Planned or underway |
| Limerick City and suburbs | Limerick | Castletroy WWTP*** | Green | Planned or underway |
| Loghill | Limerick | Loghill WWTP * | Green | |
| Mountcollins | Limerick | Mountcollins WWTP | Green | |
| Pallasgreen | Limerick | Pallasgreen WWTP | Green | |
| Rathkeale | Limerick | Rathkeale WWTP | Green | |
| Strand (Cois na Habhainn) | Limerick | Strand (Cois na Habhainn) WWTP | Green | |
| Templeglentan | Limerick | Templeglentan WWTP | Green | |
| Tournafulla | Limerick | Tournafulla WWTP * | Green | |
| Abbeyshrule | Longford | Abbeyshrule WWTP | Green | |
| Ardagh (LD) | Longford | Ardagh (LD) WWTP | Green | |
| Aughnacliffe | Longford | Aughnacliffe WWTP | Green | |
| Ballinalee | Longford | Ballinalee WWTP | Green | |
| Ballinamuck | Longford | Ballinamuck WWTP | Green | |
| Ballymahon | Longford | Ballymahon WWTP | Green | Planned or underway |
| Clondra | Longford | Clondra WWTP | Green | |
| Colehill | Longford | Colehill WWTP | Green | |
| Drumlish | Longford | Drumlish WWTP | Green | |
| Enybegs - Crannlur | Longford | Enybegs ‐ Crannlur WWTP | Green | |
| Granard | Longford | Granard WWTP | Green | |
| Kenagh | Longford | Kenagh WWTP | Green | |
| Killashee | Longford | Killashee WWTP | Green | |
| Legan | Longford | Legan WWTP | Green | |
| Longford | Longford | Longford WWTP | Green | |
| Newtownforbes | Longford | Newtownforbes WWTP | Green | |
| Annagassan | Louth | Annagassan WWTP | Green | |
| Ardee | Louth | Ardee WWTP | Green | |
| Carlingford | Louth | Carlingford WWTP | Green | |
| Castlebellingham | Louth | Castlebellingham WWTP | Green | Planned or underway |
| Drogheda | Louth | Drogheda WWTP | Green | |
| Dromiskin | Louth | Dromiskin WWTP | Green | |
| Dundalk | Louth | Dundalk WWTP | Green | Planned or underway |
| Knockbridge | Louth | Knockbridge WWTP | Green | |
| Louth Village | Louth | Louth Village WWTP | Green | |
| Omeath | Louth | Omeath WWTP | Green | Planned or underway |
| Tallanstown | Louth | Tallanstown WWTP | Green | |
| Tullyallen | Louth | Tullyallen WWTP | Green | |
| Aghagower | Mayo | Aghagower WWTP | Green | |
| Ballina | Mayo | Ballina (Mayo) WWTP | Green | |
| Ballinrobe | Mayo | Ballinrobe WTTP | Green | |
| Ballycastle | Mayo | Ballycastle WWTP | Green | |
| Ballycroy | Mayo | Ballycroy WWTP | Green | |
| Bangor Erris | Mayo | Bangor Erris WWTP | Green | |
| Belcarra | Mayo | Belcarra WWTP | Green | |
| Bellavary | Mayo | Bellavary WWTP | Green | |
| Bohola | Mayo | Bohola WWTP | Green | |
| Bunnyconnellan | Mayo | Bunnyconnellan WWTP | Green | |
| Béal An Mhuirthead | Mayo | Belmullet WWTP | Green | |
| Castlebar | Mayo | Castlebar WWTP | Green | |
| Charlestown-Bellahy | Mayo | Charlestown WWTP | Green | |
| Claremorris | Mayo | Claremorris WWTP | Green | Planned or underway |
| Conga | Mayo | Cong WWTP | Green | |
| Crossmolina | Mayo | Crossmolina WWTP | Green | |
| Foxford | Mayo | Foxford WWTP | Green | |
| Gob An Choire | Mayo | Achill Sound WWTP | Green | |
| Gweesalia | Mayo | Gweesalia WWTP | Green | |
| Hollymount | Mayo | Hollymount WWTP | Green | |
| Irishtown | Mayo | Irishtown WWTP | Green | |
| Kilkelly | Mayo | Kilkelly WWTP | Green | |
| Killala | Mayo | Killala WWTP | Green | |
| Kilmaine | Mayo | Kilmaine WWTP | Green | |
| Kilmovee | Mayo | Kilmovee WWTP | Green | |
| Kiltimagh | Mayo | Kiltimagh WWTP | Green | |
| Knock | Mayo | Knock WWTP | Green | |
| Lahardane | Mayo | Lahardane WWTP | Green | |
| Moygawnagh | Mayo | Moygawnagh WWTP | Green | |
| Mulranny | Mayo | Mallaranny WWTP | Green | |
| Old Head | Mayo | Old Head WWTP | Green | |
| Roundfort | Mayo | Roundfort WWTP | Green | |
| Shrule | Mayo | Shrule WWTP | Green | |
| Swinford | Mayo | Swinford WWTP | Green | |
| Toormakeady | Mayo | Toormakeady WWTP | Green | |
| Turlough | Mayo | Turlough WWTP | Green | |
| Westport | Mayo | Westport WWTP | Green | |
| Ashbourne | Meath | Ringsend WWTP | Green | Planned or underway |
| Athboy | Meath | Athboy WWTP | Green | |
| Ballivor | Meath | Ballivor WWTP | Green | |
| Batterstown | Meath | Batterstown WWTP | Green | |
| Bellewstown | Meath | Bellewstown WWTP | Green | |
| Bohermeen | Meath | Bohermeen WWTP | Green | |
| Carnaross | Meath | Carnaross WWTP | Green | |
| Castletown | Meath | Castletown WWTP | Green | |
| Clonalvy | Meath | Clonalvy WWTP | Green | |
| Cortown | Meath | Cortown WWTP | Green | |
| Crossakeel | Meath | Crossakeel WWTP | Green | |
| Donore | Meath | Donore (Meath) WWTP | Green | |
| Drumconrath | Meath | Drumconrath WWTP | Green | |
| Duleek | Meath | Duleek WWTP | Green | |
| Dunboyne | Meath | Ringsend WWTP | Green | Planned or underway |
| Dunderry | Meath | Dunderry WWTP | Green | |
| Dunshaughlin | Meath | Dunshaughlin Main WWTP | Green | |
| Enfield | Meath | Enfield WWTP | Green after works | Planned or underway |
| Hill of Tara | Meath | Hill of Tara WWTP | Green | |
| Kells (Ceanannas) | Meath | Kells (Meath) WWTP | Green | |
| Kilcloon | Meath | Kilcloon WWTP | Green | |
| Kilcock | Meath | LLVSS WWTP Leixlip | Green | |
| Kilmainhamwood | Meath | Kilmainhamwood WWTP | Green | |
| Laytown-Bettystown-Mornington | Meath | Drogheda WWTP | Green | |
| Lloyd, Kells Business Park | Meath | Lloyd, Kells Business Park WWTP | Green | |
| Lobinstown | Meath | Lobinstown WWTP | Green | |
| Longwood | Meath | Longwood WWTP | Green | Planned or underway |
| Moynalty | Meath | Moynalty WWTP | Green | |
| Navan (An Uaimh) | Meath | Navan WWTP | Green | Planned or underway |
| Oldcastle | Meath | Oldcastle WWTP | Green | |
| Rathmolyon | Meath | Rathmolyon WWTP | Green | |
| Ratoath | Meath | Ringsend WWTP | Green | Planned or underway |
| Slane | Meath | Slane WWTP | Green | |
| Stamullen | Meath | Barnageeragh WWTP | Green | Planned or underway |
| Trim | Meath | Trim WWTP | Green | |
| Anyalla | Monaghan | Anyalla WWTP | Green | |
| Bellanode | Monaghan | Ballinode WWTP | Green | |
| Carrickmacross | Monaghan | Carrickmacross WWTP | Green | Planned or underway |
| Carrickroe | Monaghan | Carrickroe WWTP | Green | |
| Doohamlet | Monaghan | Doohamlet WWTP | Green | |
| Drum | Monaghan | Drum WWTP | Green | |
| Emyvale | Monaghan | Emyvale WWTP | Green | |
| Inniskeen | Monaghan | Inniskeen WWTP | Green | |
| Knockaconny | Monaghan | Knockaconny WWTP | Green | |
| Magheracloone | Monaghan | Magheracloone WWTP | Green | |
| Rockcorry | Monaghan | Rockcorry WWTP | Green | |
| Scotshouse | Monaghan | Scotshouse WWTP | Green | |
| Scotstown | Monaghan | Scotstown WWTP | Green | |
| Smithborough | Monaghan | Smithboro WWTP | Green | |
| Threemilehouse | Monaghan | Threemilehouse WWTP | Green | |
| Tydavnet | Monaghan | Tydavnet WWTP | Green | |
| Tyholland | Monaghan | Tyholland WWTP | Green | |
| Ballinagar | Offaly | Ballinagar WWTP | Green | |
| Ballycumber | Offaly | Clara WWTP | Green | |
| Banagher | Offaly | Banagher WWTP | Green | |
| Belmont | Offaly | Ferbane WWTP | Green | |
| Birr | Offaly | Birr WWTP | Green | |
| Bracknagh | Offaly | Bracknagh WWTP | Green | |
| Clara | Offaly | Clara WWTP | Green | |
| Cloghan | Offaly | Cloghan WWTP | Green | |
| Clonbullogue | Offaly | Clonbullogue WWTP | Green | |
| Coolderry | Offaly | Coolderry WWTP | Green | |
| Daingean | Offaly | Daingean WWTP | Green | |
| Ferbane | Offaly | Ferbane WWTP | Green | |
| Geashill | Offaly | Geashill WWTP | Green | |
| Kilcormac | Offaly | Kilcormac WWTP | Green | |
| Killeigh | Offaly | Killeigh WWTP | Green | |
| Kinnitty | Offaly | Kinnitty WWTP | Green | |
| Leamonaghan | Offaly | Leamonaghan WWTP | Green | |
| Moneygall | Offaly | Moneygall WWTP | Green | |
| Mountbolus | Offaly | Mountbolus WWTP | Green | |
| Mucklagh | Offaly | Mucklagh WWTP | Green | |
| Rahan | Offaly | Rahan WWTP | Green | |
| Rhode | Offaly | Rhode WWTP | Green | Planned or underway |
| Shannon Harbour | Offaly | Shannon Harbour WWTP | Green | |
| Shannonbridge | Offaly | Shannonbridge WWTP | Green | |
| Shinrone | Offaly | Shinrone WWTP | Green | |
| Tullamore | Offaly | Tullamore WWTP | Green | |
| Arigna | Roscommon | Arigna WWTP | Green | |
| Athleague | Roscommon | Athleague WWTP | Green | |
| Ballaghaderreen | Roscommon | Ballaghaderreen WWTP | Green | Planned or underway |
| Ballinlough | Roscommon | Ballinlough | Green | |
| Ballintober | Roscommon | Ballintober WWTP | Green | |
| Ballyfarnon | Roscommon | Ballyfarnon WWTP | Green | |
| Ballyforan | Roscommon | Ballyforan WWTP | Green | |
| Bellanagare | Roscommon | Bellanagare WWTP | Green | |
| Boyle | Roscommon | Boyle WWTP | Green | |
| Cloonfad | Roscommon | Cloonfad WWTP | Green | |
| Cootehall | Roscommon | Cootehall WWTP | Green | |
| Cortober | Roscommon | Carrick‐on‐Shannon WWTP | Green | |
| Creagh WWTP | Roscommon | Creagh WWTP | Green | |
| Croghan | Roscommon | Croghan WWTP | Green | |
| Elphin | Roscommon | Elphin WWTP | Green | |
| Frenchpark | Roscommon | Frenchpark WWTP | Green | |
| Hodson Bay | Roscommon | Hodson Bay WWTP | Green | |
| Keadew | Roscommon | Keadew WWTP | Green | |
| Knockcroghery | Roscommon | Knockcroghery WWTP | Green | |
| Lanesborough-Ballyleague | Roscommon | Ballyleague WWTP | Green | |
| Lecarrow | Roscommon | Lecarrow WWTP | Green | |
| Lisacul | Roscommon | Lisacul WWTP | Green | |
| Loughlynn | Roscommon | Loughlynn WWTP | Green | |
| Roosky | Roscommon | Roosky WWTP | Green | |
| Strokestown | Roscommon | Strokestown WWTP | Green | |
| Termonbarry | Roscommon | Termonbarry WWTP | Green | |
| Tulsk | Roscommon | Tulsk WWTP | Green | |
| Aclare | Sligo | Aclare WWTP | Green | |
| Ballinacarrow | Sligo | Ballinacarrow WWTP | Green | |
| Ballinafad | Sligo | Ballinafad WWTP | Green | |
| Ballymote | Sligo | Ballymote WWTP | Green | |
| Bunnanaddan | Sligo | Bunnanaddan WWTP) | Green | |
| Carney | Sligo | Carney WWTP | Green | |
| Charlestown-Bellahy | Sligo | Charlestown WWTP | Green | |
| Cloonacool | Sligo | Cloonacool WWTP | Green | |
| Collooney | Sligo | Collooney WWTP | Green | |
| Coolaney | Sligo | Coolaney WWTP | Green | |
| Curry | Sligo | Curry WWTP | Green | |
| Dromore West | Sligo | Dromore West WWTP | Green | |
| Drumcliff | Sligo | Drumcliff WWTP | Green | |
| Easky | Sligo | Easky WWTP | Green | |
| Geevagh | Sligo | Geevagh WWTP | Green | |
| Grange | Sligo | Grange (Sligo) WWTP | Green | |
| Gurteen | Sligo | Gurteen WWTP | Green | |
| Monasteraden | Sligo | Monasteraden WWTP | Green | |
| Riverstown | Sligo | Riverstown WWTP | Green | |
| Rockfield | Sligo | Rockfield WWTP | Green | |
| Rosses Point | Sligo | Sligo WWTP | Green | |
| Sligo | Sligo | Sligo WWTP | Green | |
| Tubbercurry | Sligo | Tubbercurry WWTP | Green | |
| Aglish | Tipperary | Aglish WWTP | Green | |
| Annacarthy | Tipperary | Annacarthy WWTP | Green | |
| Ardcroney | Tipperary | Ardcroney WWTP | Green | |
| Ardfinnan | Tipperary | Ardfinnan WWTP | Green | |
| Ballina & Killaloe | Tipperary | Ballina (Tipperary) WWTP | Green | Planned or underway |
| Ballinaclogh | Tipperary | Ballinaclogh WWTP | Green | |
| Ballingarry | Tipperary | Ballingarry (TN) WWTP | Green | |
| Ballingarry | Tipperary | Ballingarry (TS) WWTP | Green | |
| Ballyclerahan | Tipperary | Ballyclerihan WWTP | Green | |
| Ballycommon | Tipperary | Ballycommon WWTP | Green | |
| Ballylooby | Tipperary | Ballylooby WWTP | Green | |
| Ballyneill | Tipperary | Ballyneill WWTP | Green | |
| Ballynonty | Tipperary | Ballynonty WWTP | Green | |
| Ballyporeen | Tipperary | Ballyporeen WWTP | Green | |
| Ballysloe | Tipperary | Ballysloe WWTP | Green | |
| Bansha | Tipperary | Bansha WWTP | Green | |
| Boherlahan | Tipperary | Boherlahan WWTP | Green | |
| Borrisoleigh | Tipperary | Borrisoleigh WWTP | Green | |
| Bouladuff | Tipperary | Bouladuff WWTP | Green | |
| Burncourt | Tipperary | Burncourt WWTP | Green | |
| Cahir | Tipperary | Cahir WWTP | Green | Planned or underway |
| Cappawhite | Tipperary | Cappawhite WWTP | Green | |
| Carrick-on-Suir | Tipperary | Carrick‐On‐Suir WWTP | Green | |
| Clogheen | Tipperary | Clogheen WWTP | Green | |
| Clonakenny | Tipperary | Clonakenny WWTP | Green | |
| Cloneen | Tipperary | Cloneen WWTP | Green | |
| Clonmel | Tipperary | Clonmel WWTP | Green | |
| Clonmore | Tipperary | Clonmore WWTP | Green | |
| Clonoulty | Tipperary | Clonoulty WWTP | Green | |
| Coalbrook | Tipperary | Coalbrook WWTP | Green | |
| Commons | Tipperary | Commons WWTP | Green | |
| Cullen | Tipperary | Cullen WWTP | Green | |
| Donohill | Tipperary | Donohill WWTP | Green | |
| Drangan | Tipperary | Drangan WWTP | Green | |
| Drom | Tipperary | Drom WWTP | Green | |
| Dromineer | Tipperary | Dromineer WWTP | Green | |
| Dundrum | Tipperary | Dundrum WWTP | Green | |
| Emly | Tipperary | Emly WWTP | Green | |
| Faugheen | Tipperary | Faugheen WWTP | Green | |
| Fethard | Tipperary | Fethard WWTP | Green after works | Planned or underway |
| Glengoole | Tipperary | Glengoole WWTP | Green | |
| Gortnahoe | Tipperary | Gortnahoe WWTP | Green | |
| Grange | Tipperary | Grange WWTP | Green | |
| Grangemockler | Tipperary | Grangemockler WWTP* | Green | Planned or underway |
| Kilcash | Tipperary | Kilcash WWTP | Green | |
| Killenaule | Tipperary | Killenaule WWTP | Green | |
| Kilross | Tipperary | Kilross WWTP | Green | |
| Kilsheelan | Tipperary | Kilsheelan WWTP | Green | Planned or underway |
| Kiltillane | Tipperary | Kiltillane WWTP | Green | |
| Knockavilla | Tipperary | Knockavilla WWTP | Green | |
| Lachtacarn | Tipperary | Lachtacarn WWTP | Green | |
| Lattin | Tipperary | Lattin WWTP | Green | |
| Limerick Junction | Tipperary | Limerick Junction WWTP | Green | |
| Lisronagh | Tipperary | Lisronagh WWTP | Green | |
| Littleton | Tipperary | Littleton WWTP | Green | |
| Lorrha | Tipperary | Lorrha WWTP | Green | |
| Loughmore | Tipperary | Loughmore WWTP | Green | |
| Middlequarter | Tipperary | Middlequarter WWTP | Green | |
| Monard | Tipperary | Monard WWTP | Green | |
| Moyglass | Tipperary | Moyglass WWTP | Green | |
| Moyne | Tipperary | Moyne WWTP | Green | |
| Nenagh | Tipperary | Nenagh New WWTP** | Green | Planned or underway |
| New Inn | Tipperary | New Inn WWTP | Green | |
| Newport | Tipperary | Newport (North Tipperary) WWTP | Green after works | Planned or underway |
| Newtown | Tipperary | Newtown WWTP | Green | |
| Portroe | Tipperary | Portroe WWTP | Green | Planned or underway |
| Puckane | Tipperary | Puckane WWTP | Green | |
| Rathcabbin | Tipperary | Rathcabbin WWTP | Green | |
| Rearcross | Tipperary | Rearcross WWTP | Green | |
| Redmonstown | Tipperary | Redmonstown WWTP | Green | |
| Rosegreen | Tipperary | Rosegreen WWTP | Green | |
| Rossadrehid | Tipperary | Rossadrehid WWTP | Green | |
| Templemore | Tipperary | Templemore WWTP | Green | |
| Templetuohy | Tipperary | Templetuohy WWTP | Green | |
| Terryglass | Tipperary | Terryglass WWTP | Green | |
| Thurles | Tipperary | Thurles WWTP | Green | |
| Toomevara | Tipperary | Toomevara WWTP | Green | |
| Upperchurch | Tipperary | Upperchurch WWTP | Green | |
| Aglish | Waterford | Aglish WWTP | Green | |
| Ardmore | Waterford | Ardmore WWTP | Green | |
| Ballyduff Lower | Waterford | Ballyduff Lower-Kilmeaden WWTP | Green | |
| Ballyduff Upper | Waterford | Ballyduff Upper WWTP * | Green | |
| Ballymacarbry | Waterford | Ballymacarbry WWTP | Green | |
| Bawnfune | Waterford | Bawnfune WWTP | Green | |
| Cappoquin | Waterford | Cappoquin WWTP | Green | |
| Cheekpoint | Waterford | Cheekpoint WWTP | Green | |
| Clashmore | Waterford | Clashmore WWTP | Green | |
| Clonea Power | Waterford | Clonea Power WWTP | Green | Planned or underway |
| Dungarvan | Waterford | Dungarvan WWTP | Green | |
| Dunhill | Waterford | Dunhill WWTP | Green | |
| Dunmore East | Waterford | Dunmore East | Green | |
| Kill | Waterford | Kill WWTP | Green | |
| Kilmacthomas | Waterford | Kilmacthomas | Green | |
| Lismore | Waterford | Lismore WWTP | Green | |
| Old Parish | Waterford | Old Parish WWTP | Green | |
| Passage East | Waterford | Passage East WWTP | Green | |
| Portlaw | Waterford | Portlaw WWTP | Green | |
| Rinn | Waterford | Baile Na nGall WWTP | Green | |
| Stradbally | Waterford | Stradbally WWTP | Green | |
| Tallow | Waterford | Tallow WWTP | Green | |
| Tramore | Waterford | Tramore WWTP | Green | |
| Villierstown | Waterford | Villierstown WWTP | Green | |
| Waterford City and suburbs | Waterford | Waterford City WWTP | Green | Planned or underway |
| Athlone | Westmeath | Athlone WWTP | Green | |
| Ballinalack | Westmeath | Ballinalack WWTP | Green | |
| Ballynacarrigy | Westmeath | Ballynacarrigy WWTP | Green | |
| Castlepollard | Westmeath | Castlepollard WWTP | Green | |
| Castletown Geoghegan | Westmeath | Castletown Geoghegan WWTP | Green | |
| Clonmellon | Westmeath | Clonmellon WWTP | Green | |
| Delvin | Westmeath | Delvin WWTP | Green | |
| Hillside, Finnea | Westmeath | Hillside, Finnea WWTP | Green | |
| Kilbeggan | Westmeath | Kilbeggan WWTP | Green | |
| Killucan-Rathwire | Westmeath | Killucan WWTP | Green | |
| Kinnegad | Westmeath | Kinnegad WWTP | Green | |
| Milltownpass - Millview H.E. | Westmeath | Millview H.E. (Milltownpass) WWTP | Green | Planned or underway |
| Moate | Westmeath | Moate WWTP | Green | |
| Mullingar | Westmeath | Mullingar WWTP | Green | |
| Multyfarnham | Westmeath | Multyfarnham WWTP | Green | |
| Raharney | Westmeath | Raharney WWTP | Green | |
| Tyrellspass | Westmeath | Tyrellspass WWTP | Green | |
| Arthurstown | Wexford | Arthurstown - Ballyhack - Duncannon WWTP | Green | Planned or underway |
| Ballycullane | Wexford | Ballycullane WWTP | Green | |
| Ballygarrett | Wexford | Ballygarrett WWTP | Green | |
| Ballygeary or Rosslare Harbour & Kilrane | Wexford | Rosslare Harbour WWTP | Green | |
| Ballygoman | Wexford | Ballygoman WWTP | Green | |
| Ballyhack | Wexford | Arthurstown - Ballyhack - Duncannon WWTP | Green | Planned or underway |
| Ballyhoge | Wexford | Ballyhoge WWTP | Green | |
| Ballymoney | Wexford | Ballymoney WWTP | Green | |
| Ballymurn | Wexford | Ballymurn WWTP | Green | |
| Ballywilliam | Wexford | Ballywilliam WWTP* | Green | |
| Bree | Wexford | Bree WWTP | Green | |
| Bridgetown | Wexford | Bridegtown WWTP | Green | |
| Bunclody-Carrickduff | Wexford | Bunclody WWTP | Green | |
| Carna | Wexford | Carna WWTP | Green | |
| Carrick | Wexford | Carrick WWTP | Green | |
| Castle Ellis | Wexford | Blackwater WWTP | Green | |
| Castledockerell | Wexford | Castledockerell WWTP | Green | |
| Clohamon | Wexford | Clohamon WWTP | Green | |
| Clonroche | Wexford | Clonroche WWTP | Green | |
| Coolgreaney | Wexford | Coolgreany WWTP | Green | |
| Crossabeg | Wexford | Crossabeg WWTP | Green | |
| Duncannon | Wexford | Arthurstown - Ballyhack - Duncannon WWTP | Green | Planned or underway |
| Duncormick | Wexford | Duncormick WWTP | Green | |
| Enniscorthy | Wexford | Enniscorthy WWTP | Green | |
| Glenbrien | Wexford | Glenbrien WWTP | Green | |
| Gorey | Wexford | Courtown WWTP | Green | |
| Grahormac | Wexford | Tagoat WWTP | Green | Planned or underway |
| Hollyfort | Wexford | Hollyfort WWTP | Green | |
| Kilmore Quay | Wexford | Kilmore Quay WWTP | Green | Planned or underway |
| Kilmuckeridge or Ford | Wexford | Kilmuckridge WWTP | Green | |
| Kilmyshall | Wexford | Kilmyshall WWTP | Green | |
| Kiltealey | Wexford | Kiltealey WWTP | Green | |
| Lady's Island | Wexford | Lady's Island WWTP | Green | |
| Lough | Wexford | Lough WWTP | Green | |
| Marshalstown | Wexford | Marshalstown WWTP | Green | |
| Monagear | Wexford | Monagear WWTP | Green | |
| Monamolin | Wexford | Monamolin WWTP * | Green | |
| New Ross | Wexford | New Ross WWTP | Green | |
| Newbaun | Wexford | Newbaun WWTP | Green | |
| Oilgate | Wexford | Oilgate WWTP * | Green | |
| Oulart | Wexford | Oulart WWTP | Green | |
| Rathnure | Wexford | Rathnure WWTP | Green | |
| St Brigids Terrace (Tellorought) | Wexford | St Brigids Terrace (Tellorought) WWTP | Green | |
| Tomhaggard | Wexford | Tomhaggard WWTP | Green | |
| Wexford | Wexford | Wexford town WWTP** | Green | Planned or underway |
| Arklow | Wicklow | ‐ | Green after works | Planned or underway |
| Avoca | Wicklow | ‐ | Green after works | Planned or underway |
| Ballinaclash | Wicklow | Ballinaclash WWTP | Green | |
| Ballyconnell | Wicklow | Ballyconnell WWTP | Green | |
| Ballycoog | Wicklow | Ballycoog WWTP | Green | |
| Baltinglass | Wicklow | Baltinglass WWTP | Green | |
| Barndarrig | Wicklow | Barndarrig WWTP | Green | |
| Blessington | Wicklow | Blessington WWTP | Green | |
| Bray | Wicklow | Shanganagh WWTP | Green | |
| Conary | Wicklow | Conary WWTP | Green | |
| Coolboy | Wicklow | Coolboy WWTP | Green | |
| Donard | Wicklow | Donard WWTP | Green | |
| Dunlavin | Wicklow | Dunlavin (Milltown) WWTP | Green | |
| Enniskerry | Wicklow | Enniskerry and Environs WWTP | Green | |
| Glenealy - Ballymanus | Wicklow | Glenealy ‐ Ballymanus WWTP | Green | |
| Grangecon | Wicklow | Grangecon WWTP | Green | |
| Greystones | Wicklow | Greystones WWTP | Green | |
| Hollywood | Wicklow | Hollywood WWTP | Green | |
| Kilcoole | Wicklow | Kilcoole WWTP | Green | |
| Kiltegan | Wicklow | Kiltegan WWTP | Green | |
| Kirikee Lower | Wicklow | Kirikee Lower WWTP | Green | |
| Kirikee Upper | Wicklow | Kirikee Upper WWTP | Green | |
| Knockananna | Wicklow | Knockananna WWTP | Green | |
| Knockieran | Wicklow | Knockieran WWTP | Green | |
| Rathdangan | Wicklow | Rathdangan WWTP | Green | |
| Rathdrum | Wicklow | Rathdrum WWTP | Green | |
| Redcross | Wicklow | Redcross WWTP | Green | |
| Roundwood | Wicklow | Roundwood WWTP | Green | |
| Shillelagh | Wicklow | Shillelagh WWTP | Green | |
| Stratford | Wicklow | Stratford WWTP | Green | |
| Thomastown | Wicklow | Thomastown WWTP | Green | |
| Tinahely | Wicklow | Tinahely WWTP | Green | |
| Wicklow | Wicklow | Wicklow WWTP | Green |
Source: Uisce Éireann wastewater treatment capacity registers (Copyright Uisce Éireann), fetched 5 Nov 2026. The register covers treatment plant capacity only, not the sewer network, and is indicative: a pre-connection enquiry to Uisce Éireann is the only confirmation. "After works" = rating assumes completion of a project under construction.