Why does my well water taste metallic?
What causes this
Corrosion from low-pH (acidic) water
Acidic, low-pH well water is corrosive and leaches metals out of your plumbing. The result is metal dissolved into the water you drink — and a metallic taste.
Metals leaching from plumbing — including lead
The metals a metallic taste can signal include copper, iron, zinc, and lead. Lead and copper most often come from corroding pipes, solder, or brass fixtures rather than from the groundwater itself.
Is it dangerous?
This is the symptom where the aesthetic-vs-health distinction matters most. A metallic taste can mean lead — for which there is no safe level — or copper from corroding plumbing, both of which are real health concerns, not just a taste issue. Do not write a metallic taste off as harmless: test for lead and copper before assuming it is only aesthetic.
The test that tells you
A symptom only narrows it down. To know for sure, have a state-certified lab test for:
- pH
- lead
- copper
- iron
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How to fix it
If the water is acidic, a neutralizer (acid-neutralizing filter) raises the pH so it stops corroding your pipes and leaching metal. A reverse-osmosis (RO) unit at the kitchen tap removes lead and copper from drinking water. Where lead-bearing pipes, solder, or fixtures are the source, replacing those components removes the lead at its origin.
- 1
Test for lead, copper, iron, and pH
Before assuming a metallic taste is harmless, have a state-certified lab test for lead, copper, iron, and pH. Lead and copper are health concerns that a taste alone cannot rule out.
- 2
Address acidic water at the source
If the pH is low (acidic), install a neutralizer to raise it so the water stops corroding your plumbing and leaching metals into your drinking water.
- 3
Filter drinking water at the tap
Add a reverse-osmosis system at the kitchen tap to remove lead and copper from the water you drink and cook with.
- 4
Replace lead-bearing components
If lead-bearing pipes, solder, or brass fixtures are the source, replace them to remove the lead at its origin, then re-test to confirm.
A symptom is a clue, not a diagnosis. Only a lab test of your individual well confirms what is in your water — do not assume a symptom is definitely harmless or definitely dangerous until you have tested. The county-level USGS area estimates elsewhere on this site describe a region as a whole and cannot stand in for testing your own well.
By TapWaterData Editorial
Frequently asked questions
Does metallic-tasting well water mean it has lead?
Not always, but it can. A metallic taste can mean lead — which has no safe level — or copper, iron, or zinc, often from corroding plumbing. Because a taste cannot distinguish a health hazard from an aesthetic one, the honest step is to test for lead and copper before assuming it is harmless.
Why is my well water corroding my pipes?
Acidic, low-pH well water is corrosive and dissolves metals out of pipes, solder, and brass fixtures, producing a metallic taste and sometimes blue-green or rust stains. A neutralizer that raises the pH stops the corrosion at its source.
How do I fix metallic-tasting well water?
Test for lead, copper, iron, and pH first. If the water is acidic, install a neutralizer to raise the pH; add reverse osmosis at the kitchen tap to remove lead and copper from drinking water; and replace any lead-bearing pipes, solder, or fixtures that are the source.
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