When municipal water utilities perform routine fire hydrant flushing or main line maintenance, tap water typically stays brown or discolored for a few hours up to 24 hours. Once utility crews finish opening and closing hydrants in your neighborhood, you can usually clear the sediment out of your private service line by running your cold water faucets for 10 to 15 minutes. If your tap water remains discolored long after municipal flushing has concluded, the sediment is likely trapped inside your home's plumbing system or water heater tank. Verification: Contact your local water utility provider to ask when neighborhood hydrant flushing operations are scheduled to end.
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