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Office of Drinking Water


Laboratory Certification Program

The Office of Drinking Water (ODW) Laboratory Certification Program (LCP) fulfills primacy requirements for the Safe Drinking Water Act (SDWA) by complying with the current editions of the Code of Federal Regulations 40 CFR Parts 141-143 (CFR) and the EPA Manual for the Certification of Laboratories Analyzing Drinking Water (CLADW).

The LCP ensures quality drinking water laboratory testing to preserve and protect Delaware’s public health and safety. The focus is to ensure that drinking water laboratories certified by the State perform accurate testing of SDWA compliance samples according to the standards set forth in the CLADW.

ODW certifies both in-state and out-of-state (via reciprocity) drinking water laboratories that analyze SDWA compliance samples.

Approved Laboratories

The laboratories listed below are approved by the LCP to perform SDWA compliance testing on drinking water samples. This list is provided as a convenience to public water systems in Delaware. To view specific analytes or to obtain further information on their scope of approved tests, please contact the individual laboratories.

For more information, please contact the Office of Drinking Water.



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