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ELAP Certificate # 3056
CLERC operates a water quality testing laboratory at the Carnegie Library in Lakeport, CA. The CLERC Lab offers the service of analyzing drinking water and wastewater for total coliform and E. coli. The CLERC Lab is accredited through the California Environmental Laboratory Accreditation Program (ELAP), Certificate No. 3056, for the following tests:
Drinking water
Total coliform P/A
E. coli P/A
Total coliform enumeration
E. coli enumeration
Wastewater
Total coliform enumeration
E. coli enumeration
The CLERC Lab is the only accredited microbiology lab in Lake County. The lab is setup to report results to the Division of Drinking Water when required.
In order to slow the spread of COVID-19, the CLERC Lab is currently receiving samples 
by appointment only. ​
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If you are interested in having your water tested at the CLERC Lab, please contact the Lab Manager at
​707-530-6251 or email lab@clerc.co
Lab Forms and Downloads
Additional Resources:
​State Water Resources Control Board - Division of Drinking Water
California Society of Environmental Analysts