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Water & Sewer
Water, Wastewater & Stormwater
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Stay Safe Around Stormwater Ponds
These ponds are not for recreational use. NEVER swim, fish, or play near them.
They may contain algae and/or unpleasant odours, which are common, naturally occurring features that support the ecosystem.
To learn more, check out our Stormwater Facilities Overview page.
Summer Water Restrictions - June 1 to September 30
During hotter months, Markham’s Water By-law limits residential watering of lawns and gardens.
For more information, visit our How to Use Less Water page.
Love Your Tap
The City of Markham is committed to providing you with safe and reliable drinking water! Through our advanced Quality Management System, we make sure that your tap water exceeds all provincial standards for safe drinking water.