The time it takes for brown tap water to clear up depends entirely on the root cause of the discoloration. If the brown water resulted from municipal water main flushing, neighborhood hydrant testing, or minor pipe disturbance, running your cold water taps for 5 to 15 minutes will typically flush the lines and restore complete clarity. However, if the discoloration is caused by severe internal pipe corrosion or heavy sediment inside a failing water heater tank, the brown water will persist until you replace the corroded pipes or flush the water heater. Verification: Monitor tap clarity after running water for a few minutes.
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