https://www.ontario.ca/page/municipal-drinking-water-systems-licensing-registration-and-permits?_sm_au_=iVVnfq6JfkJpL70r
Municipal drinking water systems: licensing, registration and permits | ontario.ca
May 6, 2026 - Information and rules for owners or operators of systems supplying drinking water to municipalities.
municipal drinking waterregistration and permitssystemslicensingontario