My tap water tastes, smells, or looks off
Metallic taste, a chlorine or rotten-egg smell, or cloudy or colored water.
Changes in taste, smell, or color can point to metals (including lead and copper), bacteria, chlorine byproducts, or hardness. The dependable next step is a drinking-water test. A certified mail-in lab test gives results you can act on; an at-home strip kit is a quick first screen. Once you know what is present, you can match a filter to that specific contaminant.
What to do
- Test your drinking water, starting with lead, copper, bacteria, and a general panel.
- For results you can rely on, use a certified mail-in lab and confirm it is accredited.
- Match a filter to the specific contaminant found, not a generic one.
Common questions
Does bad-tasting or smelly tap water mean it is unsafe?
Not always. Taste, smell, and color changes often come from harmless minerals or chlorine, but they can also signal metals, bacteria, or corroding pipes. A drinking-water test is the only way to know what is actually present.
What should I test my tap water for first?
Start with lead, copper, bacteria (total coliform), and a general mineral panel. A certified mail-in lab covers these in one test; an at-home strip kit is a faster but less precise first screen.
Will a water filter fix the problem?
Only if it is matched to what you found. Test first, then choose a filter certified to reduce that specific contaminant rather than a generic pitcher.
Where to go next
Mail-in and at-home kits plus certified labs to test drinking and well water for PFAS, lead, bacteria, nitrate, hardness, and more.
Official locators for accredited labs. The national ones (EPA, NELAP, A2LA, AIHA) let you search any state, plus selected state programs.
Filters and treatment systems matched to specific contaminants, for after your results come back.
General information to help you find the right test and an accredited lab. This is not medical, legal, or safety advice. For a confirmed exposure or a health concern, talk to a qualified professional, and always confirm a lab's current accreditation with the certifying body.
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