The City of Markham is committed to: Trusted supply of safe and reliable drinking water for the customer Achieve compliance with applicable legislation and regulations, while ensuring staff are trained and competent to perform their duties Protect our drinking water and provide necessary resources for the maintenance and continual improvement of the quality management system
Protect Your Pipes! F.O.G. Clogs
Fats, Oils and Grease (F.O.G.) should never go down the drain
Systems Overview: Water, Sewer, Stormwater
Learn more about wastewater & stormwater.
Backflow Prevention Online Services
Backflow Prevention Online Services
Rates, Meters, Billing & Fees
Learn more about charges for water and sewer services.
Water Quality and Testing
Learn more about our water testing.
How to Use Less Water
The City of Markham wants everyone to use water efficiently!
Projects & Programs
Learn about current projects & education programs.
Institutional, Commercial & Industrial Services
Clean & safe drinking water!
Sewer Back-up & Flooding
Learn how you can help prevent flooding in your home.
Customer Services
Learn more about some common service questions.