Holding laboratories to standards
Nearly 500 environmental laboratories maintain accreditation with the Laboratory Accreditation Unit, or LAU, part of our Environmental Assessment Program. Accreditation assures analyses are properly conducted according to prescribed methods.
LAU chemists assist labs in achieving quality results. From the smallest accredited laboratories in wastewater or drinking water facilities to large international firms that analyze samples for research projects in Washington, the LAU makes certain that environmental labs can perform the tests they claim to, that they follow appropriate protocols, and that they have a quality management system in place.
In Washington, most governmental agencies and many environmental grant providers require that scientific samples are analyzed by an accredited laboratory for data to be considered credible. Washington relies on the competence of environmental laboratories to deliver the results on which important decisions are made.
Hire a laboratory
The LAU offers guidance on choosing a laboratory and maintains several ways to make it easier to find an environmental or drinking water laboratory that is accredited for the analyses you need. See the links below to locate a lab in your area:
Cannabis laboratory accreditation project
Our agency is leading a multi-agency stakeholder process to improve future laboratory quality standards for cannabis product-testing labs in Washington. The Liquor and Cannabis Board is the current accreditor.