Brown Water From the Faucet: Is It Safe and What Causes It?
By Fletcher Plumbing NY · Updated 2026-09-15
Brown or rusty water is alarming but usually explainable. The pattern tells us where it is coming from.
Only hot water is brown
The water heater tank is rusting from the inside, usually because the sacrificial anode rod is used up. A water heater repair visit can replace the anode if the tank is still sound; if the tank itself is corroding, replacement is coming soon.
Both hot and cold are brown, all fixtures
Either the city flushed hydrants nearby (it clears in a few hours) or your home's galvanized steel supply pipes are corroding. Galvanized pipe was common in New York homes built before the 1970s and rust build-up eventually causes brown water, low pressure and leaks. The permanent solution is a whole house repipe.
Brown water at one fixture
A corroded fixture supply line or valve. Simple replacement.
Is it safe?
Rust is not typically a health hazard in small amounts, but you should not drink discolored water. Run cold taps for 10-15 minutes; if it does not clear, call a plumber for inspection.
Need a plumber now?
Fletcher Plumbing NY serves every city in New York 24/7. Call (888) 809-6756 or find your local plumber.