| Acme (Aqua 7 Regional Water Commission, Drumheller WTP) | Chlorine | Town of Drumheller Water Utilities, Village of Linden Council Agenda Package, Aug 11 2025 |
| Airdrie (Calgary Regional Water Supply) | Chlorine | City of Airdrie: Where Your Water Comes From, Calgary Water Quality and Water Data |
| Alcomdale (Sturgeon County, EPCOR via Morinville System) | Chloramine | Sturgeon County Water Accounts and Rates, EPCOR Edmonton Water Quality Annual Report |
| Alix (Stettler WTP) | Chloramine | Alberta Emergency Alert: Alix and Clive Water Supply (Stettler WTP), Town of Stettler Chloramination Information |
| Ardrossan (EPCOR Edmonton Water Supply) | Chloramine | EPCOR Edmonton Region Water Service Area Map, Strathcona County Water Quality |
| Armena (Camrose County, Capital Region Southwest WSC) | Chloramine | Camrose County Water and Sewer, EPCOR Edmonton Water Quality Annual Report |
| Ashmont (County of St. Paul, Highway 28/63 Water Commission) | Chloramine | County of St. Paul LAM Water, EPCOR Edmonton Water Quality Annual Report |
| Banff | Chlorine | Town of Banff Drinking Water |
| Barrhead (Barrhead Regional Water Commission) | Chlorine | Town of Barrhead Council Agenda Package, Dec 9 2025 (Barrhead Regional Waterworks Approval 394-03-00) |
| Beaumont (EPCOR Edmonton Water Supply) | Chloramine | EPCOR Edmonton Region Water Service Area Map, EPCOR Edmonton Water Quality Annual Report |
| Beiseker (Aqua 7 Regional Water Commission, Drumheller WTP) | Chlorine | Town of Drumheller Water Utilities (Aqua 7 Water Commission), Town of Drumheller Water Treatment Notice (Feb 2025), Village of Beiseker Bylaw 2026-10 (Aqua 7 membership) |
| Benalto (Red Deer County, EPCOR-operated wells) | Chlorine | EPCOR Red Deer County Operations |
| Bentley (Bentley Waterworks System) | Chlorine | Town of Bentley Water Asset Management Plan |
| Big Valley (Stettler WTP) | Chloramine | Stettler County: Shirley McClellan Regional Water Services Commission Members, Village of Consort Schedule of Fees (Shirley McClellan water treated at Stettler WTP), Town of Stettler Chloramination Information |
| Black Diamond (Diamond Valley) | Chlorine | Town of Diamond Valley Distribution System Certificate of Analysis |
| Blackfalds (City of Red Deer WTP) | Chloramine | City of Red Deer How Is Water Treated, City of Red Deer Water Treatment Process |
| Blackfoot (ACE Regional Water / Lloydminster WTP) | Chlorine | County of Vermilion River Hamlet Water Service, City of Lloydminster 2025 Annual Notice to Consumers |
| Bon Accord (Capital Region Northeast WSC / EPCOR) | Chloramine | Town of Bon Accord Council Agenda, Mar 19 2024 (Water Shortage Plan RFD), EPCOR Edmonton Water Quality Annual Report |
| Bonnyville (Cold Lake Regional Water, chloraminated at Transfer Station) | Chloramine | Town of Bonnyville Regional Waterline Notice |
| Bowden (Mountain View Regional Water Services Commission) | Chlorine | Town of Didsbury FAQ (Mountain View Regional Water communities), Mountain View Regional Water Services Commission Certificate of Analysis |
| Bruce (Highway 14 Regional Water / EPCOR) | Chloramine | Highway 14 Regional Water Services Commission History, EPCOR Edmonton Water Quality Annual Report |
| Bruderheim (John S. Batiuk Regional Water Commission / EPCOR) | Chloramine | John S. Batiuk Regional Water Commission, EPCOR Edmonton Water Quality Annual Report |
| Busby (Westlock Regional Water Services Commission) | Chlorine | Westlock County 2024 Budget (Serving our hamlets, p.13), Town of Westlock Water Distribution Master Plan Update 2022 (Table 3.3), Town of Westlock, Westlock County, Village of Clyde Regional Water Supply and Treatment Study ACP Application 2021/22 |
| Cadotte Lake (NEW water Ltd regional WTP) | Chloramine | NEW water Ltd. Little Buffalo Predesign Report (Northern Sunrise County) |
| Calgary (North / Bearspaw plant) | Chlorine | Calgary Bearspaw Water Treatment Plant Summary |
| Calgary (South / Glenmore plant) | Chlorine | Calgary Glenmore Water Treatment Plant Summary |
| Calmar (EPCOR Edmonton Water Supply) | Chloramine | EPCOR Edmonton Region Water Service Area Map, EPCOR Edmonton Water Quality Annual Report |
| Camrose | Chlorine | City of Camrose Sustainable Camrose (Water Treatment) |
| Canmore | Chlorine | EPCOR Canmore Water Services, EPCOR Canmore Water Quality Annual Performance Report |
| Carbon (Aqua 7 Regional Water Commission, Drumheller WTP) | Chlorine | Town of Drumheller Water Utilities (Aqua 7 Water Commission), Town of Drumheller Water Treatment Notice (Feb 2025) |
| Cardiff (Sturgeon County, EPCOR water) | Chloramine | Sturgeon County Water Accounts and Rates, EPCOR Edmonton Water Quality Annual Report |
| Carstairs (Mountain View Regional Water Services Commission) | Chlorine | Town of Didsbury FAQ (Mountain View Regional Water communities), Mountain View Regional Water Services Commission Certificate of Analysis |
| Castor (Stettler WTP) | Chloramine | Stettler County: Shirley McClellan Regional Water Services Commission Members, Village of Consort Schedule of Fees (Shirley McClellan water treated at Stettler WTP), Town of Stettler Chloramination Information |
| Chestermere (Calgary Regional Water Supply) | Chlorine | City of Chestermere Water Supply & System, Calgary Water Quality and Water Data |
| Chipman (John S. Batiuk Regional Water Commission / EPCOR) | Chloramine | John S. Batiuk Regional Water Commission, EPCOR Edmonton Water Quality Annual Report |
| Clairmont (Aquatera Grande Prairie WTP) | Chlorine | County of Grande Prairie Water and Sewer Services, Aquatera Resident Resource Guide |
| Clandonald (ACE Regional Water via Lloydminster) | Chlorine | County of Vermilion River Hamlet Water Service, City of Lloydminster Annual Notice to Consumers |
| Clive (Stettler WTP) | Chloramine | Alberta Emergency Alert: Alix and Clive Water Supply (Stettler WTP), Village of Clive Highway 12/21 Water FAQ, Town of Stettler Chloramination Information |
| Clyde (Westlock Regional Water Services Commission) | Chlorine | Town of Westlock Water Distribution Master Plan Update 2022 (Table 3.3), Town of Westlock, Westlock County, Village of Clyde Regional Water Supply and Treatment Study ACP Application 2021/22, Alberta Municipal Affairs: Municipalities Within Services Commissions (2024) |
| Coaldale (City of Lethbridge WTP) | Chloramine | Town of Coaldale Water & Sewer, City of Lethbridge Water Consumer Confidence Report |
| Coalhurst (City of Lethbridge WTP) | Chloramine | Town of Coalhurst Water, Wastewater and Stormwater, City of Lethbridge Water Consumer Confidence Report |
| Cochrane | Chlorine | Town of Cochrane Water Treatment Plant |
| Consort (Stettler WTP) | Chloramine | Village of Consort Schedule of Fees, Town of Stettler Chloramination Information |
| Coronation (Stettler WTP) | Chloramine | County of Paintearth Utilities, Town of Stettler Chloramination Information |
| Crossfield (Mountain View Regional Water Services Commission) | Chlorine | Town of Crossfield Water and Sewer, Mountain View Regional Water Services Commission Certificate of Analysis |
| Dapp (Westlock Regional Water Services Commission) | Chlorine | Westlock County 2024 Budget (Serving our hamlets, p.13), Town of Westlock Water Distribution Master Plan Update 2022 (Table 3.3), Town of Westlock, Westlock County, Village of Clyde Regional Water Supply and Treatment Study ACP Application 2021/22 |
| Derwent (ACE Regional Water / EPCOR Edmonton) | Chloramine | County of Two Hills Water, EPCOR Edmonton Region Water Service Area Map 2026, EPCOR Edmonton Water Quality Annual Report |
| Devon | Chlorine | Town of Devon Water & Wastewater Treatment |
| Dewberry (ACE Regional Water / Lloydminster WTP) | Chlorine | County of Vermilion River Hamlet Water Service, City of Lloydminster Annual Notice to Consumers |
| Diamond City (City of Lethbridge WTP) | Chloramine | Lethbridge County Hamlet of Diamond City Growth Study, City of Lethbridge Water Consumer Confidence Report |
| Didsbury (Mountain View Regional Water Services Commission) | Chlorine | Town of Didsbury Water FAQ |
| Donalda (Stettler WTP) | Chloramine | Village of Donalda Water Reservoir Project Update, Village of Consort Schedule of Fees (Shirley McClellan water treated at Stettler WTP), Town of Stettler Chloramination Information |
| Drumheller | Chlorine | Town of Drumheller Water and Wastewater Utilities |
| Duhamel (Highway 12/21 Regional Water, Stettler WTP) | Chloramine | Camrose County Water and Sewer, Village of Clive Highway 12/21 Water FAQ, Town of Stettler Chloramination Information |
| Duvernay (ACE Regional Water / EPCOR via Vegreville) | Chloramine | EPCOR Edmonton Region Water Service Area Map, EPCOR Edmonton Water Quality Annual Report |
| Edmonton (EPCOR Edmonton Water Supply) | Chloramine | EPCOR Edmonton Water Quality Annual Report |
| Edson | Chlorine | Town of Edson Water and Sewer |
| Egremont (Highway 28/63 Regional Water) | Chloramine | Thorhild County Water and Sewer Services, County of St. Paul LAM Water, EPCOR Edmonton Water Quality Annual Report |
| Entwistle (Parkland County, WILD Water Commission / EPCOR) | Chloramine | Parkland County Water and Wastewater, EPCOR Edmonton Water Quality Annual Report |
| Evansburg (Yellowhead County) | Chlorine | Yellowhead County Evansburg Area Structure Plan amendment (Council agenda 11 Oct 2022) |
| Fairview | Chlorine | Town of Fairview Utilities & Waste Services |
| Fawcett (Westlock Regional Water) | Chlorine | Westlock County 2020 Capital Budget (Fawcett truck fill), Westlock County 2024 Budget (Serving our hamlets, p.13), Town of Westlock, Westlock County, Village of Clyde Regional Water Supply and Treatment Study ACP Application 2021/22 |
| Ferintosh (Stettler WTP via Highway 12/21 Regional Water) | Chloramine | Camrose County Water and Sewer, Village of Clive Highway 12/21 Water FAQ, Town of Stettler Chloramination Information |
| Forestburg | Chlorine | Village of Forestburg AEP Waterworks System Inspection Report (Apr 2022 agenda) |
| Fort Chipewyan (Wood Buffalo) | Chlorine | RMWB Fort Chipewyan Water Treatment Plant Certificate of Analysis |
| Fort McKay | Chlorine | RMWB Fort McKay Water Treatment Plant Update |
| Fort Saskatchewan (EPCOR Edmonton Water Supply) | Chloramine | City of Fort Saskatchewan Water Quality, EPCOR Edmonton Water Quality Annual Report |
| Gibbons (Capital Region Northeast WSC, EPCOR Rossdale) | Chloramine | Town of Gibbons Our Water Supply, EPCOR Edmonton Water Quality Annual Report |
| Grande Cache (MD of Greenview) | Chlorine | MD of Greenview Notice of Application, Grande Cache Waterworks System |
| Grande Prairie (Aquatera Grande Prairie WTP) | Chlorine | Aquatera Resident Resource Guide |
| Grimshaw | Chlorine | Town of Grimshaw Water and Wastewater Department Report |
| Halkirk (Stettler WTP) | Chloramine | County of Paintearth Utilities, Town of Stettler Chloramination Information |
| Hardisty | Chlorine | Town of Hardisty Drinking Water Safety Plan (Mar 2021 council agenda) |
| Harmon Valley (NEW water Ltd regional system) | Chloramine | NEW water Ltd Regional Water System Predesign Report (Northern Sunrise County agenda) |
| Hay Lakes (Capital Region Southwest WSC / EPCOR Edmonton) | Chloramine | Capital Region Southwest Water Services Commission About, EPCOR Edmonton Water Quality Annual Report |
| High Level (High Level Regional Waterworks) | Chlorine | Town of High Level Council Agenda Package (WTP Treatment Alternatives Technical Memorandum) |
| High River | Chlorine | Town of High River Water Treatment & Management |
| Hinton | Chlorine | Town of Hinton and Mondi Water Services Agreement |
| Holden (Highway 14 Regional Water Services Commission) | Chloramine | Highway 14 Regional Water Services Commission History, EPCOR Edmonton Water Quality Annual Report |
| Hythe (County of Grande Prairie, Hythe WTP1/WTP2) | Chlorine | County of Grande Prairie Water and Wastewater Committee Agenda (Hamlet Utility Assessment) |
| Innisfail (Mountain View Regional Water Services Commission) | Chlorine | Town of Innisfail Utilities, Mountain View Regional Water Services Commission Certificate of Analysis |
| Innisfree (ACE Regional Water, EPCOR west side) | Chloramine | ACE Regional Water System Brochure (County of Vermilion River, Feb 2018), EPCOR Edmonton Water Quality Annual Report |
| Iron Springs (City of Lethbridge WTP) | Chloramine | Lethbridge County Hamlet of Iron Springs Growth Study, City of Lethbridge Water Consumer Confidence Report |
| Irricana (Aqua 7 / Town of Drumheller WTP) | Chlorine | Town of Drumheller Water Utilities (Aqua 7 Water Commission), Town of Drumheller Water Treatment Notice (Feb 2025) |
| Islay (ACE Regional Water / Lloydminster WTP) | Chlorine | County of Vermilion River Hamlet Water Service, City of Lloydminster 2025 Annual Notice to Consumers |
| Josephburg (EPCOR Edmonton Water Supply) | Chloramine | EPCOR Edmonton Region Water Service Area Map, Strathcona County Water Quality |
| Kitscoty (ACE Regional Water / Lloydminster WTP) | Chlorine | ACE Regional Waterline Brochure (County of Vermilion River), City of Lloydminster Annual Notice to Consumers |
| La Crete | Chlorine | Mackenzie County Public Notice: La Crete Water Quality |
| La Glace (County of Grande Prairie) | Chlorine | County of Grande Prairie Water and Wastewater System Assessment, Hamlet of La Glace |
| Lacombe (City of Red Deer WTP) | Chloramine | City of Red Deer How is Water Treated, City of Red Deer Water Treatment Process |
| Lamont (John S. Batiuk Regional Water Commission / EPCOR) | Chloramine | John S. Batiuk Regional Water Commission, EPCOR Edmonton Water Quality Annual Report |
| Lavoy (ACE Regional Water / EPCOR via Vegreville) | Chloramine | ACE Regional Water System Brochure, EPCOR Edmonton Water Quality Annual Report |
| Leduc (Capital Region Southwest WSC / EPCOR) | Chloramine | Capital Region Southwest Water Services Commission About, EPCOR Edmonton Water Quality Annual Report |
| Legal (Morinville Regional Waterline / EPCOR) | Chloramine | EPCOR Edmonton Region Water Service Area Map, EPCOR Edmonton Water Quality Annual Report |
| Lethbridge (City of Lethbridge WTP) | Chloramine | City of Lethbridge Water Consumer Confidence Report |
| Linden (Aqua 7 Regional Water Commission, Drumheller WTP) | Chlorine | Village of Linden Council Agenda Package Aug 11 2025 (Health and Safety Manual), Town of Drumheller Water Utilities |
| Little Buffalo (NEW water Ltd East Transmission) | Chloramine | Northern Sunrise County Public Works: NEW Water Limited, NEW water Ltd Regional Water System Predesign Report (Little Buffalo) |
| Lloydminster | Chlorine | City of Lloydminster Drinking Water Quality and Compliance Annual Notice to Consumers |
| Longview | Chlorine | Village of Longview Infrastructure Master Plan |
| Mallaig (Highway 28/63 Water Commission / EPCOR) | Chloramine | County of St. Paul LAM Water, EPCOR Edmonton Water Quality Annual Report |
| Mannville (ACE west side / EPCOR) | Chloramine | ACE Regional Waterline Brochure (Feb 2018 update), EPCOR Edmonton Water Quality Annual Report |
| Marie Reine (NEW water Ltd South Transmission) | Chloramine | Northern Sunrise County Public Works: NEW Water Limited, NEW water Ltd Regional Water System Predesign Report (WTP chloramination) |
| Marwayne (ACE Regional Water / Lloydminster WTP) | Chlorine | ACE Regional Water System Brochure, City of Lloydminster 2025 Annual Notice to Consumers |
| Mayerthorpe (Mayerthorpe Waterworks System) | Chlorine | Town of Mayerthorpe Town Services (Water FAQ) |
| McLennan (McLennan Waterworks System) | Chlorine | Town of McLennan Waterworks System Approval Renewal Notice |
| Medicine Hat | Chlorine | City of Medicine Hat Water Information |
| Millet (Capital Region Southwest WSC / EPCOR) | Chloramine | Capital Region Southwest Water Services Commission About, EPCOR Edmonton Water Quality Annual Report |
| Mirror (Stettler WTP) | Chloramine | Town of Stettler Chloramination Information |
| Monarch (City of Lethbridge WTP) | Chloramine | Lethbridge County Hamlet of Monarch Growth Study Review, City of Lethbridge Water Consumer Confidence Report |
| Morinville (EPCOR Edmonton Water Supply) | Chloramine | EPCOR Edmonton Water Quality Annual Report |
| Mundare (John S. Batiuk Regional Water Commission / EPCOR) | Chloramine | John S. Batiuk Regional Water Commission, EPCOR Edmonton Water Quality Annual Report |
| Myrnam (ACE west side / EPCOR) | Chloramine | ACE Regional Waterline Brochure (Feb 2018 update), EPCOR Edmonton Water Quality Annual Report |
| Nampa (NEW water Ltd South Transmission) | Chloramine | Northern Sunrise County Public Works: NEW Water Limited, NEW water Ltd Regional Water System Predesign Report (WTP chloramination) |
| Nanton | Chlorine | Town of Nanton Water Services |
| New Norway (Stettler WTP via Highway 12/21 Regional Water) | Chloramine | Camrose County Water and Sewer, Village of Clive Highway 12/21 Water FAQ, Town of Stettler Chloramination Information |
| New Sarepta (Leduc County, EPCOR via Capital Region Southwest WSC) | Chloramine | Leduc County Water and Sewer Services, EPCOR Edmonton Water Quality Annual Report |
| Newbrook (Highway 28/63 Regional Water Services Commission) | Chloramine | Thorhild County Water and Sewer Services, EPCOR Edmonton Region Water Service Area Map, EPCOR Edmonton Water Quality Annual Report |
| Nisku (Leduc County, EPCOR water via CRSWSC) | Chloramine | Leduc County Water and Sewer Services, EPCOR Edmonton Water Quality Annual Report |
| Nobleford | Chlorine | Town of Nobleford Public Works |
| Nordegg (Nordegg Waterworks System) | Chlorine | Clearwater County Public Works - Nordegg Water |
| Ohaton (Camrose County, via Capital Region Southwest WSC / EPCOR) | Chloramine | Camrose County Water and Sewer Rates, Capital Region Southwest Water Services Commission About, EPCOR Edmonton Water Quality Annual Report |
| Okotoks | Chlorine | Town of Okotoks Waterworks Annual Report |
| Olds (Mountain View Regional Water Services Commission) | Chlorine | Town of Olds Water, Conservation and Wastewater, Mountain View Regional Water Services Commission Treated Water Lab Report |
| Peace River (Peace River Waterworks System) | Chlorine | Town of Peace River Water System |
| Penhold | Chlorine | Town of Penhold Water Services |
| Pibroch (Westlock Regional Water Services Commission) | Chlorine | Westlock County 2024 Budget (Serving our hamlets, p.13), Town of Westlock Water Distribution Master Plan Update 2022 (Table 3.3), Town of Westlock, Westlock County, Village of Clyde Regional Water Supply and Treatment Study ACP Application 2021/22 |
| Pickardville (Westlock Regional Water Services Commission) | Chlorine | Westlock County 2024 Budget (Serving our hamlets, p.13), Town of Westlock Water Distribution Master Plan Update 2022 (Table 3.3), Town of Westlock, Westlock County, Village of Clyde Regional Water Supply and Treatment Study ACP Application 2021/22 |
| Ponoka (City of Red Deer WTP) | Chloramine | Town of Ponoka Drinking Water, City of Red Deer Water Treatment Process |
| Radway (Highway 28/63 Regional Water Services Commission) | Chloramine | Thorhild County Water and Sewer Services, County of St. Paul LAM Water, EPCOR Edmonton Water Quality Annual Report |
| Rainbow Lake (Rainbow Lake Waterworks System) | Chlorine | Town of Rainbow Lake Regular Council Agenda (operator report) |
| Red Deer (City of Red Deer WTP) | Chloramine | City of Red Deer Water Treatment Process |
| Redwater (EPCOR Edmonton Water Supply) | Chloramine | EPCOR Edmonton Region Water Service Area Map, EPCOR Edmonton Water Quality Annual Report |
| Reno (NEW water Ltd South Transmission) | Chloramine | Northern Sunrise County Public Works: NEW Water Limited, NEW water Ltd Regional Water System Predesign Report (Little Buffalo) |
| Riviere Qui Barre (Sturgeon County, EPCOR water) | Chloramine | Sturgeon County Water Accounts and Rates, EPCOR Edmonton Water Quality Annual Report |
| Rocky Mountain House (Rocky Mountain House Waterworks System) | Chlorine | Town of Rocky Mountain House Water & Wastewater Treatment |
| Rycroft (Rycroft Waterworks System) | Chlorine | Village of Rycroft Infrastructure Assessment Report |
| Ryley (Highway 14 Regional Water Services Commission) | Chloramine | Highway 14 Regional Water Services Commission History, EPCOR Edmonton Water Quality Annual Report |
| Sedgewick (Sedgewick Waterworks System) | Chlorine | Town of Sedgewick EPEA Notice of Application (Waterworks) |
| Sexsmith (Aquatera Grande Prairie WTP) | Chlorine | Aquatera Resident Resource Guide, Aquatera Treated Water Certificate of Analysis |
| Shaughnessy (City of Lethbridge WTP) | Chloramine | Lethbridge County Hamlet of Shaughnessy Growth Study, City of Lethbridge Water Consumer Confidence Report |
| Sherwood Park (EPCOR Edmonton Water Supply) | Chloramine | Strathcona County Water Quality |
| Smoky Lake (Highway 28/63 Regional Water Services Commission) | Chloramine | EPCOR Edmonton Region Water Service Area Map, EPCOR Edmonton Water Quality Annual Report |
| Spruce Grove (EPCOR Edmonton Water Supply) | Chloramine | EPCOR Edmonton Region Water Service Area Map, EPCOR Edmonton Water Quality Annual Report |
| Spruce View (Spruce View Waterworks System) | Chlorine | EPCOR Red Deer County Water Systems |
| St. Albert (EPCOR Edmonton Water Supply) | Chloramine | EPCOR Edmonton Water Quality Annual Report |
| St. Michael (John S. Batiuk Regional Water / EPCOR) | Chloramine | EPCOR Edmonton Region Water Service Area Map, EPCOR Edmonton Water Quality Annual Report |
| Stettler (Stettler WTP) | Chloramine | Town of Stettler Chloramination Information |
| Stony Plain (EPCOR Edmonton Water Supply) | Chloramine | EPCOR Edmonton Region Water Service Area Map, EPCOR Edmonton Water Quality Annual Report |
| Strathmore (Calgary Regional Water Supply) | Chlorine | Town of Strathmore Water Supply and Distribution, City of Calgary Water Quality and Water Data |
| Swan Hills (Swan Hills Waterworks System) | Chlorine | Town of Swan Hills Public Works Operations |
| Sylvan Lake (north of 47 Ave) | Chlorine | Town of Sylvan Lake Water and Sewer |
| Sylvan Lake (south of 47 Ave) | Chlorine | Town of Sylvan Lake Water and Sewer |
| Thorhild (Highway 28/63 Regional Water Services Commission) | Chloramine | Thorhild County Water and Sewer Services, County of St. Paul LAM Water, EPCOR Edmonton Water Quality Annual Report |
| Thorsby (Thorsby Waterworks System) | Chlorine | Town of Thorsby 2020 Water Quick Reference Document |
| Three Hills | Chlorine | Town of Three Hills Annual Report (Water Treatment Plant Upgrade) |
| Tofield (Highway 14 Regional Water Services Commission) | Chloramine | Highway 14 Regional Water Services Commission History, EPCOR Edmonton Water Quality Annual Report |
| Trochu | Chlorine | Town of Trochu Municipal Development Plan (Bylaw 2023-05), Town of Three Hills Annual Report (Water Treatment Plant Upgrade), Town of Trochu Water/Wastewater Staff Report (Council Agenda Package, Apr 2026) |
| Turin (City of Lethbridge WTP) | Chloramine | Lethbridge County Hamlet of Turin Growth Study Review, City of Lethbridge Water Consumer Confidence Report |
| Turner Valley (Diamond Valley) | Chlorine | Town of Diamond Valley Distribution System Lab Report (Bureau Veritas) |
| Two Hills (ACE Regional Water, EPCOR west side) | Chloramine | ACE Regional Water System Brochure (County of Vermilion River, Feb 2018), EPCOR Edmonton Water Quality Annual Report |
| Valleyview (Valleyview Waterworks System) | Chloramine | Town of Valleyview Drinking Water Upgrade: Secondary Disinfection |
| Vegreville (John S. Batiuk Regional Water Commission, EPCOR) | Chloramine | John S. Batiuk Regional Water Commission, EPCOR Edmonton Water Quality Annual Report |
| Veinerville (City of Medicine Hat water) | Chlorine | Cypress County 2019 Budget, City of Medicine Hat Water |
| Vermilion (ACE Regional Water, EPCOR) | Chloramine | Town of Vermilion Water Services, EPCOR Edmonton Water Quality Annual Report |
| Viking (Highway 14 Regional Water Services Commission) | Chloramine | Highway 14 Regional Water Services Commission History, EPCOR Edmonton Water Quality Annual Report |
| Villeneuve (Sturgeon County, EPCOR via Morinville System) | Chloramine | EPCOR Edmonton Region Water Service Area Map, EPCOR Edmonton Water Quality Annual Report |
| Vilna (Highway 28/63 Regional Water Services Commission) | Chloramine | EPCOR Edmonton Region Water Service Area Map, EPCOR Edmonton Water Quality Annual Report |
| Vimy (Westlock Regional Water) | Chlorine | Westlock County Regular Council Agenda, Nov 24 2020 (Utility Dept. report), Westlock County 2024 Budget (Serving our hamlets, p.13), Town of Westlock Water Distribution Master Plan Update 2022 (Table 3.3) |
| Wabamun (Parkland County, EPCOR via WILD) | Chloramine | Parkland County Water and Wastewater, EPCOR Edmonton Water Quality Annual Report |
| Walsh (City of Medicine Hat water) | Chlorine | Cypress County 2019 Budget, City of Medicine Hat Water |
| Warspite (Highway 28/63 Regional Water Services Commission) | Chloramine | EPCOR Edmonton Region Water Service Area Map, EPCOR Edmonton Water Quality Annual Report |
| Wembley (Aquatera Grande Prairie WTP) | Chlorine | Aquatera Resource Guide for Residential Customers |
| Westlock (Westlock Regional Water Services Commission) | Chlorine | Town of Westlock Water and Other Utilities, Town of Westlock, Westlock County, Village of Clyde Regional Water Supply and Treatment Study ACP Application 2021/22 |
| Willingdon (ACE Regional Water / EPCOR via Vegreville) | Chloramine | ACE Regional Waterline Brochure (County of Vermilion River), EPCOR Edmonton Water Quality Annual Report |
| Woking (Woking Waterworks System) | Chloramine | Saddle Hills County Council Agenda Package (Woking Water System Assessment) |
