The Oklahoma Department of Environmental Quality operates the Laboratory Accreditation Program (LAP) to insure the quality of analytical data received by the DEQ Water Quality Division and other state agencies for compliance and decision making purposes. Our goal is to provide standards for accreditation of privately and publicly owned laboratories for performance of analyses of water, wastewater and sludge.
Laboratories are accredited to perform environmental testing. A laboratory may not be accredited to perform all the possible parameters offered for accreditation. To verify that a laboratory is currently accredited for a particular parameter, please contact The Laboratory Accreditation Section at 405-702-1000 or email here.
New Rules Effective 2019 for OAC 252:301, 252:302, and 252:307
New rules includes additional definitions, updates to approved methods and a new fee for on-site assessments.
Oklahoma Laboratory accreditation and TNI rules offer classes of accreditation.
Drinking Water Laboratory. A drinking water laboratory may be accredited for Fields of Accreditation in the following categories: metals, general chemistry, microbiology, asbestos, synthetic organic chemicals (SOCs), volatile organic compounds (VOCs) and/or radionuclides.
General Water Laboratory. A laboratory may be accredited for Fields of Accreditation in the following categories: metals, nutrients, oxygen demands, semi-volatile organic compounds (SVOCs), general chemistry I and/or II, microbiology, asbestos, synthetic organic chemicals (SOCs), volatile organic compounds (VOCs), radionuclides, whole effluent toxicity (WET) testing, hazardous waste characterization, petroleum hydrocarbons, perchlorate, and/or basic environmental laboratory.
Application for Field Accreditation – Initial:Renewal
Application for General Water Quality/Sludge Testing Accreditation – Initial: Renewal
Application for Drinking Water Accreditation – Initial: Renewal
Application for TNI General Environmental Accreditation – Initial: Renewal Primary; Secondary
Application for TNI Drinking Water Accreditation – Initial: Renewal Primary; Secondary
EPA Program Waiver
Laboratory Accreditation Rules
Lab Accreditation Fees