Galvanized steel distribution piping has an average service life of approximately 40-60 years. Galvanized steel corrodes internally over time. This corrosion can cause weak water pressure and discolored water. Corroded galvanized steel plumbing lines can also pose a health hazard. Old, galvanized steel piping was coated in a zinc solution to help prevent corrosion. The galvanizing process of the zinc solution includes small amounts lead and cadmium, which are both hazardous to humans when ingested. The more corrosion that occurs within the pipes, the more these metals will flow through the plumbing fixtures in a home. Galvanized steel plumbing lines that emit rust colored water should be evaluated by a qualified contractor.
If discolored water is only present in the hot water, it may be a result of issues with the water heater. Mineral sediments can accumulate in a water heater over time and eventually cause discolored red or orange water. It is recommended that water heaters be flushed at least once per year to help prevent sediment buildup.
On some occasions discolored water in a home is not the result of any issues with the home’s plumbing. There can be water events in a city’s drinking water system that cause discolored water to enter a home. Sediment in a city’s main water lines generally settles at the bottom of the lines and is left undisturbed. However, this sediment can be stirred up during construction, firefighting, hydrant use, and main water breaks. Water discoloration caused by sediment is temporary and usually flows through after a few hours.
While discolored water is not always an indication of significant issues, it can be a clue that warrants further evaluation of your plumbing system by a qualified plumbing contractor. Plumbing repairs can be expensive and catching problems early on can help to save a homeowner money while also protecting the health and safety of the home’s occupants.