Frequent Questions

How do I find out about laboratory accreditation or certification?

The NELAC Institute (TNI) establishes and implements The National Environmental Laboratory Accreditation Program (NELAP) for the accreditation of environmental laboratories.

Additionally, EPA protects drinking water by requiring that laboratories become certified to analyze drinking water samples and that they use analytical methods approved by EPA. Information about EPA’s certification of laboratories can be found on the following Web pages:

There are also Good Laboratory Practice Standards published in Title 40, Part 160 of the Code of Federal Regulations (CFR):

Additional laboratory accreditation and certification resources are available on the following Web pages:

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