Analytical Methods and Laboratories

Learn about the EPA-approved analytical methods and laboratories that water systems must use when analyzing samples to meet federal monitoring requirements or to demonstrate compliance with federal water regulations. 

Drinking Water Laboratory Certification – Offers guidance for laboratories seeking EPA certification to conduct drinking water analysis. 

Safe Drinking Water Act (SDWA) Methods – See the approved analytical methods for analyzing water samples according to federal monitoring requirements and drinking water regulations under SDWA.

Water Laboratory Alliance - Provides the water sector with a nationwide network of laboratories capable of analyzing water samples in the event of chemical, biological, or radiochemical contamination.

Clean Water Act Methods – Provides information regarding laboratory methods for analyzing the chemical, physical and biological components of wastewater and other environmental samples that are required under CWA authority.