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This is not the current EPA website. To navigate to the current EPA website, please go to www.epa.gov. This website is historical material reflecting the EPA website as it existed on January 19, 2025. This website is no longer updated and links to external websites and some internal pages may not work. More information »

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Certification of Laboratories that Analyze Drinking Water Samples to Ensure Compliance with Regulations

  • Certification of Laboratories

    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.

About Drinking Water Laboratory Certification

  • Learn about laboratory certification

Certification, Monitoring and Analysis Requirements

  • Laboratory certification manual
  • Approved methods for analyzing drinking water samples
  • Cyanide Clarification of Free and Total Cyanide Analysis for Safe Drinking Water Act Compliance
  • Procedure for Safe Drinking Water Act Program Detection Limits for Radionuclides

Certification Process and Training

  • Laboratory certification manual
  • Methods 1623 and 1623.1 technical training material
  • Radiochemistry training for drinking water compliance

Certification Programs and Certified Laboratories

  • Contact information for certification programs and certified laboratories
Contact Us About Certification of Laboratories for Drinking Water to ask a question, provide feedback, or report a problem.
Last updated on December 9, 2024
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