Why EPA says testing is the only way to know if there is lead in your water, how to find a certified laboratory, and what your utility can do.
Sources: EPA and CDC, linked inline. Last checked 2026-10-09. This guide is general information, not medical, legal or plumbing advice.
Why test
EPA: “Since you cannot see, taste, or smell lead dissolved in water, testing is the only sure way of telling whether there are harmful quantities of lead in your drinking water.” (EPA) Each home is different: “Since each home has different plumbing, pipes, and materials, test results are likely to be different for each home.” (EPA Protect Your Tap)
How to get a test
- Ask your water utility first. CDC: “Your local water authority is your best resource for testing and identifying lead in your tap water.” (CDC) EPA notes some utilities “offer programs to pay for water testing and/or lead service line replacement for residents” (EPA).
- Use a certified laboratory. EPA “recommends sending samples to a certified laboratory for analysis” and says “Certified laboratories for testing are available by contacting your state or your local drinking water company.” EPA lists typical costs of $15 to $100 (EPA).
- Follow the lab's instructions exactly. EPA: “Carefully follow the directions of the certified laboratory for collecting the water sample.” How long water has sat in the pipes matters: “The more time water has been sitting in pipes, the more lead it may contain.” (EPA)
Water test vs. blood test
A water test measures lead in your water, not in a person. CDC: “A blood test is the best way to determine if a child has been exposed to lead” and “No safe blood lead level in children has been identified.” (CDC) Talk to a health care provider about blood testing.
Check your address: look up your service line in your utility's published inventory.
Frequently asked questions
How do I test my tap water for lead?
EPA recommends sending samples to a certified laboratory; your state or local water utility can tell you which labs are certified, and some utilities offer testing programs. Follow the lab's sampling instructions.
How much does a lead water test cost?
EPA's Protect Your Tap guide lists typical costs between $15 and $100 for testing by a certified laboratory.