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Current Members

Current OnWARN Members

Aurora (Town of) Aurora, ON
Bayham (Municipality) Straffordville, ON 
​Blue Mountains (Town of)
Thornburry, ON​
Brockville (City) 
Brockville, ON
Carleton Place (Town of) Carleton Place, ON
Casselman (Village) Casselman, ON
Centre Wellington (Township of) Elora, ON
Chatham-Kent Public Utilities Commission Chatham, ON
Clearview (Township of)
Stayner, ON
​Deseronto (Town of)
​Deseronto, ON
​Dryden (City of)
​Dryden, ON
Durham (Regional Municipality) Whitby, ON
Dutton Dunwich (Municipality) Dutton, ON
East Gwillimbury (Town of) East Gwillimbury, ON
Edwardsburgh/Cardinal (Township) Cardinal, ON
Elgin Area Primary Water Supply System  Greater London Region, ON 
Erin (Town of) Erin, ON
Gananoque Public Utilities Gananoque, ON
Greater Napanee (Town of) Greater Napanee, ON
Greater Sudbury (City) Sudbury, ON
Guelph (City) Guelph, ON
Guelph/Eramosa (Township) Rockwood, ON
Kawartha Lakes (City) Kawartha Lakes, ON
Kincardine (Municipality)
Kincardine, ON
King (Township)
King, ON
​Kingston (Utilities Kingston)
​Kingston, ON
Kitchener (City)
Kitchener, ON
Lake Huron Primary Water Supply System  Greater London Region, ON
Lakefront Utilities Services Inc.  Cobourg, ON 
London (City) London, ON
Malahide (Township) Aylmer, ON 
Marmora and Lake (Municipality) Marmora, ON
Midland (Town) Midland. ON
Minto (Town) Minto, ON
Mississippi Mills (Town) Almonte, ON
Muskoka (District of) Bracebridge, ON
Niagara (Regional Municipality) Thorold, ON
North Glengary (Township) Alexandria, ON
North Grenville (Municipality) Kemptville, ON
North Perth (Municipality) North Perth, ON
Oro-Medonte (Township) Oro-Medonte, ON
Oxford (County) Woodstock, ON
Perth (Municipality of the Town of) Perth, ON
Peterborough Utilities Services Inc Peterborough, ON
Prescott (Town of) Prescott, ON
Quinte West (City) Quinte West, ON
Renfrew (Town of) Renfrew, ON
Russell Public Utilities (Township) Emburn, ON
Severn (Township) Orillia, ON
Smiths Falls (Town) Smiths Falls, ON
Southgate (Township)(Dundalk Drinking Water & Wastewater Services) Casselman, ON
Southwold (Municipality) Fingal, ON
St. Thomas (City)  St. Thomas, ON
Stirling-Rawdon (Township) Stirling-Rawdon, ON
Strathroy-Caradoc (Municipality) Strathroy, ON
Trent Hills (Municipality)
Campbellford, ON
Waterloo (City) Waterloo, ON
Whitchurch-Stouffville (Town of) Stouffville, ON