Checked by Sunni Parks ·
A metallic smell or taste — people often describe it as iron or rust — splits into two pretty different causes depending on whether you can actually see a reddish-brown tint in the water or it's taste-only.
Causes and what people typically do are based on published guidance from the EPA and state drinking-water programs, not guesses. The zip lookup pulls from EPA's public violation records (SDWIS) and a utility's own water quality report, hand-checked utility by utility rather than scraped.
This tool provides general information based on published EPA and utility data, and common causes reported by water quality professionals. It is not a substitute for laboratory water testing, a licensed plumber's assessment, or guidance from your water utility or local health department. WaterCheck does not guarantee the accuracy, completeness, or timeliness of the information provided and is not liable for decisions made based on it.
Usually, yes — it's most often iron or rust from older pipes or a water heater (if there's a visible tint), or trace copper from slightly acidic water, or naturally occurring manganese (if it's taste-only). Both are more of a nuisance than a safety issue, though testing is a reasonable way to confirm.
That combination usually points to iron or rust, often from an older steel pipe somewhere in the home or the water heater. Flushing the water heater and looking into an iron filter is a common first step.
This is usually related to low pH — meaning the water is slightly acidic — which lets it pick up trace amounts of copper from pipes. Sometimes it's naturally occurring manganese instead.
Testing your water's pH and copper or iron levels is a reasonable next step; a pH-neutralizing filter or iron filter is the common fix, depending on the cause.
That smell or taste is most commonly iron or rust, often from an older steel pipe somewhere in the home or the water heater — especially if you also see a reddish or brown tint. Flushing the water heater and looking into an iron filter is a common first step. If there's no tint at all, the cause is more often slightly acidic water picking up trace copper from pipes, or naturally occurring manganese.
Groundwater can pick up iron naturally as it moves through soil and rock, and older steel pipes or a water heater can add more. If the water also has a reddish or brown tint or leaves orange stains, iron is the likely cause, and an iron filter is the common fix. Testing the well for iron, pH and manganese is a reasonable first step so you treat the right thing.