What causes poor water quality to happen?

During the summer months, areas with lower water flow and older pipes can cause stagnant water and reduced chlorine levels. When combined with higher seasonal water temperatures, this can lead to poor water quality. The weekly testing by the City of Malden and the MWRA is intended to be a warning signal so that we can address any problematic symptoms before they become unsafe.

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1. Why is the City of Malden doing hydrant flushing?
2. How common is the water issue?
3. What causes poor water quality to happen?
4. What does flushing the system accomplish?
5. Do I need to do anything before using or drinking the water?
6. What is the City doing to address this long term?
7. I have additional questions about the hydrant flushing. Who should I call?