Expired Drinking Water Laboratory Accreditation


Section 64415(a) of the California Code of Regulations (CCR) requires that analyses pursuant to Chapter 15 “Domestic Water Quality and Monitoring Regulations” be performed by environmental laboratories accredited by the California Environmental Laboratory Accreditation Program (ELAP). To maintain accreditation, a laboratory must comply with the application requirements as cited in the Environmental Laboratory Accreditation Act Sections 100825-100920 and California Code of Regulations, Title 22, Division 4, Chapter 19. ELAP accreditation is valid for only two years. If a laboratory does not apply for renewal at least 90 days prior to the expiration of its current accreditation, the certificate may expire, and the laboratory will no longer be accredited (CCR §64805(d)). Laboratories must also meet regulatory requirements implemented by ELAP to remain accredited for drinking water analyses. ELAP may rescind accreditation if a laboratory is unable to meet these requirements.

What is a water system’s responsibility?

It is a water system’s responsibility to ensure its laboratory is accredited to perform the analyses for its monitoring requirements. Failure to have compliance samples analyzed by an ELAP-accredited laboratory could result in a monitoring violation requiring public notification and a requirement to resample (California Code of Regulations Section 64415(a)). Note that use of an unaccredited laboratory for services other than drinking water quality compliance analyses is not affected by loss of accreditation.

Below is a list of laboratories who are no longer accredited to perform drinking water analyses.

Certificate Number Laboratory Name Street Address City State Zip Code Expiration Date
2783 Ultimate Labs SD Inc 5940 Pacific Mesa Court #209 San Diego CA 92121 7/1/2020
2896 Enthalpy Analytical LLC 2323 Fifth Street Berkeley CA 94710 6/1/2020
1285 Tulare County Public Health Laboratory 1062 South K Street Tulare CA 93274 6/1/2020
2786 City of Soledad Water Quality Control Laboratory 34520 Morisoli Road Soledad CA 93960 5/14/2020
2442 Travis Air Force Base Water Laboratory 106 Bodin Circle Bldg 791 Travis Air Force Base CA 94535 11/1/2019
2938 TestAmerica Laboratories, Inc. – Nashville 2960 Foster Creighton Dr. Nashville TN 37204 11/1/2019
1657 A & L Western Laboratories 1311 Woodland Ave., Suite 1 Modesto CA 95351 11/1/2019
1786 Kings County Public Health Laboratory 330 Campus Dr. Hanford CA 93230 10/5/2019

Online Laboratory Accreditation Status Lookup Tool
To check the accreditation status of your water system’s laboratory, visit the map on ELAP’s webpage at www.waterboards.ca.gov/elap. Instructions for using the map are found on this web page under: Online Laboratory Lookup Tool.

  1. Go to www.waterboards.ca.gov/elap. Click the link next to “LOOKING FOR A LAB?” to go to ELAP’s GIS Map.


  1. Type the name of a laboratory into the search box in the upper left corner and click the magnifying glass icon to search.


  1. When you have located the laboratory, click on the “More info” link next to the FOT list in the laboratory’s information box.


  1. The laboratory’s Accredited Fields of Testing (FOT) List will appear. Verify the expiration date and that the list contains the analyses for which the laboratory is providing services to your agency.