Why are you "flushing" the water mains?

We clean water mains to improve water quality by removing sediment. Water travels slowly through the mains, causing sediment to settle at the bottom and build up over time. A change in direction or an increase in the rate of flow of the water in the mains (e.g., due to water main breaks, or hydrant use for firefighting) can disturb the sediment and discolour the water.

Show All Answers

1. What is water main flushing?
2. What are water mains?
3. Why are you "flushing" the water mains?
4. How do you clean the water mains during flushing?
5. How long does it take to flush the water mains on each street?
6. How will I know when you are flushing water mains on my street?
7. Can I use my water when you are flushing the water mains on my street?
8. My in-home medical equipment requires water to operate. What should I do?
9. What do I do if I need water during the time that I am not supposed to use water?
10. I have time delayed appliances or water conditioning systems. What should I do?
11. Is the Fire Department aware of the water main flushing?
12. Will I notice anything different after you have flushed the water mains?
13. How do I get rid of the discoloured appearance?
14. What should I do if the water is still discoloured after two or three hours?
15. What if someone drinks the water when it is discoloured?
16. What else may I notice about my water after you have flushed the water mains?
17. Why can't you flush the water mains at night?
18. Where will you drain the water used in the flushing program?
19. Does discharged water affect the environment?
20. Do other cities have similar water main flushing programs?
21. I lost water service. Why, and what do I do?
22. Why does flush-water (hydrant or at the tap) appear discoloured?
23. Is the water safe to drink?
24. How will you pay for the water main flushing program?
25. Will I be paying for the water used in flushing?
26. Is water main flushing a waste of water? Is this counterproductive to conservation?