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Watermain flushing and discoloured water in St. John’s
St. John's, Newfoundland and Labrador, Canada
Watermain flushing and discoloured water in St. John’s. St.
Key information
St. John’s normally cleans water mains from May to October on weekdays between 8 am and 4 pm. A hydrant may run for 30 to 60 minutes. Read the city’s notice for your street and avoid laundry, hot-water use and food preparation with the water while flushing is underway nearby.
On this page
Key facts and next steps
| Question | Answer |
|---|---|
| When does St. John's normally flush water mains? | The published program runs May through October, on weekdays from 8 am to 4 pm. A particular street is not necessarily flushed every day in that period; use the current notice for its location. |
| How will I know work is happening nearby? | The city publishes advisories on its website, sends notices to subscribers and uses digital signs. Check the notice's street and date; a general seasonal program page does not confirm work at your address today. |
| Why can water look cloudy after the work? | Air bubbles can make water look milky and may clear as it stands. The city also describes temporary changes in chlorine smell. These explanations do not replace a separate water-quality advisory. |
Sources: Watermain Cleaning and Flushing
Understand the notice
When does St. John's normally flush water mains?
The published program runs May through October, on weekdays from 8 am to 4 pm. A particular street is not necessarily flushed every day in that period; use the current notice for its location.
Source: Watermain Cleaning and Flushing
Why does the city open hydrants?
Unidirectional flushing changes the valve sequence to move water quickly through a section of main and remove sediment. The visible flow is a planned maintenance task rather than a public tap for collecting water.
Source: Watermain Cleaning and Flushing
How long can a hydrant run?
The city gives a typical duration of 30 to 60 minutes per hydrant. Work on a nearby sequence can take longer than one hydrant's running time, so use the local notice rather than timing only one discharge.
Source: Watermain Cleaning and Flushing
Sources: Watermain Cleaning and Flushing
During flushing on your street
How will I know work is happening nearby?
The city publishes advisories on its website, sends notices to subscribers and uses digital signs. Check the notice's street and date; a general seasonal program page does not confirm work at your address today.
Source: Watermain Cleaning and Flushing
What water uses should I avoid during nearby flushing?
The city asks residents to avoid using water for food or beverages, laundry and hot-water use while the main on their street is being flushed. Follow the local advisory if it gives more specific instructions.
Source: Watermain Cleaning and Flushing
Will water service always be shut off?
The city says flushing normally does not interrupt service, but pressure can fall temporarily and water can become discoloured. A separate emergency or repair notice can have different instructions.
Source: Watermain Cleaning and Flushing
Sources: Watermain Cleaning and Flushing
After flushing and getting help
Why can water look cloudy after the work?
Air bubbles can make water look milky and may clear as it stands. The city also describes temporary changes in chlorine smell. These explanations do not replace a separate water-quality advisory.
Source: Watermain Cleaning and Flushing
What does the city advise for discoloured water afterward?
The page advises running a cold-water tap, such as a bathtub tap, for a few minutes until it clears. Avoid drawing sediment into hot-water systems or filtered taps. Follow any specific advisory for your street first.
Source: Watermain Cleaning and Flushing
When should I call about water that does not clear?
If discolouration remains after several hours, contact Access St. John's at 311 or 709-754-2489. Give the address, timing and whether nearby properties are affected so staff can check the situation.
Source: Watermain Cleaning and Flushing
Does a flushing notice override another drinking-water advisory?
No. This page describes routine maintenance and its expected effects. Read any separate current advisory and its instructions rather than assuming every colour, pressure or taste change is routine flushing.
Source: Watermain Cleaning and Flushing
Sources: Watermain Cleaning and Flushing
Apply, book or get help
Sources: Watermain Cleaning and Flushing