Prohibits cross-connections and requires owners to install a backflow prevention device (premises isolation) sized to the property's hazard classification, to protect the municipal drinking-water system from contamination.
Water & sewer — Sarnia, Ontario
What are the water and sewer rules and rates?
The City of Sarnia, Ontario has 4 adopted bylaws on file: Backflow Prevention By-Law No. 89 of 2016; By-Law to Regulate the Provision of Water No. 58 of 1991 (as amended); Lawn Watering Restrictions By-Law No. 17 of 2010 (amending By-Law No. 58 of 1991); Sewer Use By-Law No. 13 of 2021, verified 2026-08-23.
Governs municipal water service: application/connection to the water main, service-pipe and meter requirements at the owner's expense, and related charges; as amended, incorporates the City's seasonal lawn-watering restriction.
Reinstates seasonal outdoor watering restrictions, prohibiting lawn/garden watering from June 15 to August 31 inclusive each year, added as section 27 of the Water By-Law.
Prohibits discharging pollutants into sanitary, storm or combined wastewater works that could damage the system or endanger workers, the public or the environment; sets discharge limits and requires grease/oil/sediment interceptors for food-related and other trade premises.