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Home Drinking Water Testing. This document contains information and guidance on home water testing. EPA Home Water Testing Facts (pdf) (567.88 KB) EPA questions and answers on home water testing. Last updated on January 9, 2024.
EPA protects drinking water by requiring that laboratories become certified to analyze drinking water samples and that they use analytical methods approved by EPA. Learn about drinking water laboratory certification.
Do you know who can test your water? Often county health departments will help you test for bacteria or nitrates. If not, you can have your water tested by a state certifi ed laboratory. You can fi nd one in your area by calling the Safe Drinking Water Hotline at 800-426-4791 or visiting www.epa.gov/safewater/labs. Collecting Samples
Contact a laboratory to test your drinking water; Request analytical services; Explore the Laboratory Compendium Practice Response
Contact one or both of the two privately-run National Radon Proficiency Programs (listed below alphabetically) who are offering proficiency listing/accreditation/certification in radon testing and mitigation. National Radon Proficiency Program (NRPP) Phone (toll free): (800) 269-4174 or (828) 890-4117 Email: certification@nrpp.info
Individuals interested in independently having their drinking water tested are encouraged to contact a state-certified drinking water laboratory. Unfortunately, EPA is unable to test residential or commercial drinking water upon request.
Be certified by EPA or the state to analyze drinking water samples for compliance monitoring; Successfully analyze proficiency testing (PT) samples at least annually for each method and analyte for which they desire certification; Use approved methods; Pass periodic on-site audits
This page contains a list of links for the Approved Drinking Water Analytical Methods.
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. A list of certified laboratories are available from your state or local drinking water authority or on EPA’s website at: https://www.epa.gov/dwlabcert/contact-information ...
EPA protects drinking water by requiring that laboratories analyze samples using EPA-approved methods. Learn about drinking water analytical methods.