| Alma (Pictou County Water Utility) | Chlorine | NSUARB Decision 2017 NSUARB 101, Pictou County Water Utility Rate Application |
| Amherst | Chlorine | NSUARB Decision 2022 NSUARB 48 (M10340), Town of Amherst Water Utility |
| Annapolis Royal | Chlorine | Granville Ferry Water System Assessment Report 2023 (Annapolis County) |
| Antigonish | Chlorine | Town of Antigonish Water page |
| Antigonish Fringe Area (Antigonish County) | Chlorine | NSUARB Decision 2020 NSUARB 138 (M09784), Antigonish County Water Utility, Town of Antigonish Water page |
| Arichat (Richmond County - Babins Lake) | Chlorine | NSUARB Decision 2024 NSUARB 117, Richmond County Water Utility Rate Application |
| Baddeck | Chlorine | NSUARB Decision 2024 NSUARB 27 (M11320), Village of Baddeck Water Utility |
| Bedford (Halifax Water - Pockwock/J.D. Kline) | Chlorine | Halifax Water Lake Major Watershed Newsletter Fall 2021 (Communities Served table), Halifax Water Chlorine & Fluoride page |
| Birch Grove (CBRM - Glace Bay WTP) | Chlorine | CBRM Water Treatment & Distribution page, CBRM Water FAQ |
| Bridgetown (Annapolis County) | Chlorine | Bridgetown Water System Assessment Report 2023 (Annapolis County) |
| Bridgewater | Chlorine | Public Service Commission of Bridgewater - Water Supply System page |
| Brooklyn (Region of Queens - Town Lake) | Chlorine | Region of Queens Water Utility page, NSRAB Decision 2025 NSRAB 146, Region of Queens Water Utility Rate Application |
| Cheticamp (Inverness County Water Utility) | Chlorine | NSUARB Decision M10990 Inverness County Water Utility 2023 |
| Cole Harbour (Halifax Water - Lake Major) | Chlorine | Halifax Water Lake Major Watershed Newsletter Fall 2021 (Communities Served table), Halifax Water Chlorine & Fluoride page |
| Cornwallis Park (Annapolis County) | Chlorine | Cornwallis Water System Assessment Report 2023 (Annapolis County) |
| Cow Bay - Silver Sands (Halifax Water - Lake Major) | Chlorine | Halifax Water 2024/25 Annual Report, Halifax Water Chlorine & Fluoride page |
| Coxheath (CBRM - Sydney WTP) | Chlorine | CBRM Water Treatment & Distribution page, CBRM Water FAQ |
| Curry's Corner (West Hants - Windsor WTP) | Chlorine | West Hants Regional Municipality Water Treatment Plants page |
| Dartmouth (Halifax Water - Lake Major) | Chlorine | Halifax Water Lake Major Watershed Newsletter Fall 2021 (Communities Served table), Halifax Water Chlorine & Fluoride page |
| Debert | Chlorine | NSRAB Decision 2025 NSRAB 101 (M12194), Debert Water Utility |
| Dingwall (Victoria County) | Chlorine | NSUARB Decision 2023 NSUARB 8 (M10683), Victoria County Water Utility, Victoria County Municipal Water Systems page |
| Dominion (CBRM - Glace Bay WTP) | Chlorine | CBRM Water Treatment & Distribution page, CBRM Water FAQ |
| Donkin (CBRM - Glace Bay WTP) | Chlorine | CBRM Water Treatment & Distribution page, CBRM Water FAQ |
| Eastern Passage (Halifax Water - Lake Major) | Chlorine | Halifax Water Lake Major Watershed Newsletter Fall 2021 (Communities Served table), Halifax Water Chlorine & Fluoride page |
| Elmsdale (East Hants - Regional/Enfield Water Treatment Facility) | Chlorine | Municipality of East Hants - Water Treatment Process |
| Enfield (East Hants - Regional/Enfield Water Treatment Facility) | Chlorine | Municipality of East Hants - Water Treatment Process |
| Fall River (Halifax Water - Pockwock/J.D. Kline) | Chlorine | Halifax Water Lake Major Watershed Newsletter Fall 2021 (Communities Served table), Halifax Water Chlorine & Fluoride page |
| Falmouth (West Hants - Falmouth WTP) | Chlorine | West Hants Regional Municipality Water Treatment Plants page |
| Garlands Crossing (West Hants - Windsor WTP) | Chlorine | West Hants Regional Municipality Water Treatment Plants page |
| Glace Bay (CBRM - Glace Bay WTP) | Chlorine | CBRM Water Treatment & Distribution page, CBRM Water FAQ |
| Glooscap First Nation (West Hants - Hantsport WTP) | Chlorine | West Hants Regional Municipality Water Treatment Plants page |
| Grand Lake Road (CBRM - Sydney WTP) | Chlorine | CBRM Water Treatment & Distribution page, CBRM Water FAQ |
| Granville Ferry (Annapolis County) | Chlorine | Granville Ferry Water System Assessment Report 2023 (Annapolis County) |
| Greenwood | Chlorine | Greenwood Water Utility Source Water Protection Plan (Greenwood SWP Committee agenda package, May 8 2025) |
| Halifax (Halifax Water - Pockwock/J.D. Kline) | Chlorine | Halifax Water Lake Major Watershed Newsletter Fall 2021 (Communities Served table), Halifax Water Chlorine & Fluoride page |
| Hants Border (West Hants - Hantsport WTP) | Chlorine | West Hants Regional Municipality Water Treatment Plants page |
| Hantsport (West Hants - Hantsport WTP) | Chlorine | West Hants Regional Municipality Water Treatment Plants page |
| Hillside (Pictou County, Trenton supply) | Chlorine | Town of Trenton Water Utility page |
| Ingonish Beach (Victoria County - Ingonish) | Chlorine | Victoria County Municipal Water Systems page |
| Ingonish Harbour (Victoria County - Ingonish) | Chlorine | Victoria County Municipal Water Systems page |
| Inverness (Inverness County Water Utility) | Chlorine | NSUARB Decision M10990 Inverness County Water Utility 2023 |
| Judique (Inverness County Water Utility) | Chlorine | NSUARB Decision M10990 Inverness County Water Utility 2023 |
| Kentville | Chlorine | Town of Kentville 2021 Annual Report on Drinking Water to the Province |
| Lantz (East Hants - Regional/Enfield Water Treatment Facility) | Chlorine | Municipality of East Hants - Water Treatment Process |
| Lequille (Annapolis County - Granville Ferry system) | Chlorine | Granville Ferry Water System Assessment Report 2023 (Annapolis County) |
| Linacy (Pictou County Water Utility) | Chlorine | NSUARB Decision 2017 NSUARB 101, Pictou County Water Utility Rate Application |
| Lingan (CBRM - New Waterford WTP) | Chlorine | CBRM Water Treatment & Distribution page, CBRM Water FAQ |
| Little Narrows (Victoria County) | Chlorine | NSUARB Decision 2023 NSUARB 8 (M10683), Victoria County Water Utility, Victoria County Municipal Water Systems page |
| Liverpool (Region of Queens - Town Lake) | Chlorine | Region of Queens Water Utility page, NSRAB Decision 2025 NSRAB 146, Region of Queens Water Utility Rate Application |
| Louisbourg (CBRM - Louisbourg WTP) | Chlorine | CBRM Water Treatment & Distribution page, CBRM Water FAQ |
| Mabou (Inverness County Water Utility) | Chlorine | NSUARB Decision M10990 Inverness County Water Utility 2023 |
| Maccan (Amherst Water Utility) | Chlorine | NSUARB Decision 2022 NSUARB 48 (M10340), Town of Amherst Water Utility |
| Mahone Bay | Chlorine | Town of Mahone Bay 2025 Water Treatment Facility Annual Report |
| Margaretsville (Annapolis County) | Chlorine | Margaretsville WTP Water System Assessment Report 2023 (Annapolis County) |
| Membertou (CBRM - Sydney WTP) | Chlorine | CBRM Water Treatment & Distribution page, CBRM Water FAQ |
| Middleton | Chlorine | NSERBT Decision M12131 Middleton Rate Application 2025 |
| Mira Road (CBRM - Sydney WTP) | Chlorine | CBRM Water Treatment & Distribution page, CBRM Water FAQ |
| Neil's Harbour (Victoria County - Neils Harbour/New Haven) | Chlorine | Victoria County Municipal Water Systems page |
| New Haven (Victoria County - Neils Harbour/New Haven) | Chlorine | Victoria County Municipal Water Systems page |
| New Victoria (CBRM - New Waterford WTP) | Chlorine | CBRM Water Treatment & Distribution page, CBRM Water FAQ |
| New Waterford (CBRM - New Waterford WTP) | Chlorine | CBRM Water Treatment & Distribution page, CBRM Water FAQ |
| North Preston (Halifax Water - Lake Major) | Chlorine | Halifax Water Lake Major Watershed Newsletter Fall 2021 (Communities Served table), Halifax Water Chlorine & Fluoride page |
| North Sydney (CBRM - Pottle Lake WTP) | Chlorine | CBRM Water Treatment & Distribution page, CBRM Water FAQ |
| Oxford | Chlorine | NSRAB Decision 2025 NSRAB 137, Town of Oxford Water Utility Rate Application |
| Parrsboro (Cumberland County) | Chlorine | NSUARB Decision 2023 NSUARB 23 (M10704), Cumberland County Water Utility |
| Pictou | Chlorine | NSUARB Decision 2024 NSUARB 112, Town of Pictou Water Utility Rate Application |
| Pine Tree Park (CBRM - Sydney WTP) | Chlorine | CBRM Water Treatment & Distribution page, CBRM Water FAQ |
| Plymouth (Pictou County Water Utility) | Chlorine | NSUARB Decision 2017 NSUARB 101, Pictou County Water Utility Rate Application |
| Port Caledonia (CBRM - Glace Bay WTP) | Chlorine | CBRM Water Treatment & Distribution page, CBRM Water FAQ |
| Port Morien (CBRM - Glace Bay WTP) | Chlorine | CBRM Water Treatment & Distribution page, CBRM Water FAQ |
| Port Williams | Chlorine | NSUARB Decision 2016 NSUARB 28, Port Williams Water Utility Rate Application |
| Priestville (Pictou County Water Utility) | Chlorine | NSUARB Decision 2017 NSUARB 101, Pictou County Water Utility Rate Application |
| Prime Brook (CBRM - Sydney WTP) | Chlorine | CBRM Water Treatment & Distribution page, CBRM Water FAQ |
| Pugwash (Cumberland County) | Chlorine | NSUARB Decision 2023 NSUARB 23 (M10704), Cumberland County Water Utility |
| Reserve Mines (CBRM - Glace Bay WTP) | Chlorine | CBRM Water Treatment & Distribution page, CBRM Water FAQ |
| River Ryan (CBRM - New Waterford WTP) | Chlorine | CBRM Water Treatment & Distribution page, CBRM Water FAQ |
| Riverton (Pictou County Water Utility) | Chlorine | NSUARB Decision 2017 NSUARB 101, Pictou County Water Utility Rate Application |
| Sackville (Halifax Water - Pockwock/J.D. Kline) | Chlorine | Halifax Water Lake Major Watershed Newsletter Fall 2021 (Communities Served table), Halifax Water Chlorine & Fluoride page |
| Scotchtown (CBRM - New Waterford WTP) | Chlorine | CBRM Water Treatment & Distribution page, CBRM Water FAQ |
| Shelburne | Chloramine | NSUARB Decision 2016 NSUARB 72, Town of Shelburne Water Utility Rate Application |
| Sherbrooke (St. Mary's) | Chlorine | NSRAB Decision 2025 NSRAB 50, Sherbrooke Water Utility Rate Application |
| Shubenacadie (East Hants - Shubenacadie Water Treatment Facility) | Chlorine | Municipality of East Hants - Water Treatment Process |
| South Bar (CBRM - Sydney WTP) | Chlorine | CBRM Water Treatment & Distribution page, CBRM Water FAQ |
| Springhill (Cumberland County) | Chlorine | NSUARB Decision 2023 NSUARB 23 (M10704), Cumberland County Water Utility |
| Sydney (CBRM - Sydney WTP) | Chlorine | CBRM Water Treatment & Distribution page, CBRM Water FAQ |
| Sydney Mines (CBRM - Pottle Lake WTP) | Chlorine | CBRM Water Treatment & Distribution page, CBRM Water FAQ |
| Sydney River (CBRM - Sydney WTP) | Chlorine | CBRM Water Treatment & Distribution page, CBRM Water FAQ |
| Tatamagouche | Chlorine | Municipality of Colchester Water page (Tatamagouche Water Utility) |
| Three Mile Plains (West Hants - Windsor WTP) | Chlorine | West Hants Regional Municipality Water Treatment Plants page |
| Timberlea (Halifax Water - Pockwock/J.D. Kline) | Chlorine | Halifax Water Lake Major Watershed Newsletter Fall 2021 (Communities Served table), Halifax Water Chlorine & Fluoride page |
| Tower Road (CBRM - Glace Bay WTP) | Chlorine | CBRM Water Treatment & Distribution page, CBRM Water FAQ |
| Trenton | Chlorine | Town of Trenton Water Utility page |
| Truro | Chlorine | Town of Truro Water Utility page |
| Upper Falmouth (West Hants - Falmouth WTP) | Chlorine | West Hants Regional Municipality Water Treatment Plants page |
| Waverley (Halifax Water - Pockwock/J.D. Kline) | Chlorine | Halifax Water Lake Major Watershed Newsletter Fall 2021 (Communities Served table), Halifax Water Chlorine & Fluoride page |
| Wentworth Road (West Hants - Windsor WTP) | Chlorine | West Hants Regional Municipality Water Treatment Plants page |
| Westmount (CBRM - Sydney WTP) | Chlorine | CBRM Water Treatment & Distribution page, CBRM Water FAQ |
| Westphal (Halifax Water - Lake Major) | Chlorine | Halifax Water Lake Major Watershed Newsletter Fall 2021 (Communities Served table), Halifax Water Chlorine & Fluoride page |
| Westville | Chlorine | NSUARB Decision M10026 Westville Water Utility 2021 |
| Westville Road (Pictou County Water Utility) | Chlorine | NSUARB Decision 2017 NSUARB 101, Pictou County Water Utility Rate Application |
| Whycocomagh (Inverness County Water Utility) | Chlorine | NSUARB Decision M10990 Inverness County Water Utility 2023 |
| Windsor (West Hants - Windsor WTP) | Chlorine | West Hants Regional Municipality Water Treatment Plants page |
| Wolfville | Chlorine | Town of Wolfville Info Report EPW-B23-02 Corrosivity of Municipal Water 2024 |
| Yarmouth | Chlorine | NSUARB Decision M07463 Town of Yarmouth Water Utility 2016 |
