Liberty Plumbing
Troubleshooting

Rusty or Brown Water From the Tap: What It Means

Brown or rusty water is usually sediment or corrosion, from the water heater if it's hot-only, or from the supply line, a main break, or (on wells) iron if it's both hot and cold. Run the cold tap a few minutes. If it clears, it was stirred-up sediment.

What to do right now

  • Run the cold tap for a few minutes. If it clears, it was stirred-up sediment (often after a main flush or fire-hydrant use nearby) and isn't a plumbing fault.
  • Check hot vs. cold: if it's only hot water that's discolored, the water heater is shedding sediment or its anode rod is failing. Flushing the tank usually fixes it.
  • If both hot and cold stay discolored, especially on a well, have the water tested for iron and sediment before drinking it.

Likely causes

  • Hot-only: sediment or a corroding anode rod in the water heater
  • Both hot and cold: disturbed sediment in the main or a city line flush
  • Well water: iron or manganese needing treatment
  • Old galvanized pipe corroding from the inside

When to call a pro

If the quick fixes do not solve it, this is usually a water softeners & filtration job. Liberty dispatches 24/7 with upfront pricing.

Rusty or Brown Water From the Tap: What It Means, FAQ

Is brown tap water safe to drink?
Sediment and iron aren't usually dangerous but shouldn't be ingested in quantity, and discoloration can hide other issues, so have it tested, especially on a well, before you rely on it.
Why is only my hot water brown?
That points to the water heater, sediment settling in the tank, or a corroding anode rod. Flushing the tank typically clears it. A heavily scaled tank may be near the end of its life.

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