The City is testing over 2,700 fire hydrants starting Monday, October 2, 2017. Fire hydrant testing will start in the north end of Guelph and progress towards the south end. All testing should be complete by the end of October.
What to expect from fire hydrant testing
- There will be no disruption to water service
- No chemicals are used in fire hydrant testing
- Residents living near a tested fire hydrant may experience a short period of discoloured water
Drinking small amounts of discoloured water is unlikely to cause health issues. However, the City recommends waiting until water runs clear before drinking it. Run a cold water tap for five to fifteen minutes until water runs clear.
Why we test fire hydrants
Fire hydrant testing helps protect our community by ensuring hydrants are in proper working order when needed for fire suppression.
The cause of discoloured water
Discoloured water occurs when minerals naturally present in Guelph’s groundwater combine with chlorine to form small rust particles. These particles settle on the bottom water mains and pipes. When testing hydrants, high pressure water flows can disrupt the settled particles causing discoloured water.
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