Hydrant Flushing
The City of Thorold's fire hydrant flushing program occurs on an annual basis every spring to ensure hydrants operate correctly and to help maintain good water quality. As part of the annual program, City staff will turn hydrants on to circulate water in city water mains. This may cause minor changes to the water consistency and pressure. This issue should be resolved by running cold water for a few minutes until the pressure returns to normal. If the water does not return to normal after a thorough tap flush (approx. 10 minutes), residents are asked to call our Public Works Department at 905-227-6613 x266 for assistance.
The city is divided into three areas, in which City staff conduct hydrant maintenance:
- Decew System Area
- South End System Area
- Port Robinson System Area
2025 schedule
Monday, April 28, 2025 - The City began flushing hydrants in the Decew System Area and this will be ongoing for a few months.
Monday, April 28, 2025 - The City completed the Port Robinson System Area on Wednesday, April 30, 2025.
Monday, May 5, 2025 - The City completed the South End System Area on Wednesday, May 14, 2025.
Hydrant flushing area maps
Photo Gallery: Hydrant Flushing Area Maps will appear here on the public site.
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Need more information?
Residents can contact the City’s Public Works Department during business hours for more information: 905-227-6613 x266 or pubworks@thorold.ca.
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