Why does the City flush hydrants?

Regular flushing improves drinking water quality by removing sediments from inside the mainline and flushing them out through the hydrant. It also serves to identify malfunctions of the hydrant and related valves.

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1. Why does the City flush hydrants?
2. When does the City flush hydrants?
3. Why is my water discolored?
4. What should I do if my water is discolored?
5. Is the City wasting water when it flushes hydrants?
6. Why does my water smell like rotten eggs?