Laboratory Accreditation

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The Oklahoma Department of Environmental Quality operates the laboratory accreditation program 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 do general water quality, sludge testing, and drinking water analyses. 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 David Caldwell at (405) 702-1039.

This page last updated on August 15, 2016

Accredited Laboratories

DEQ GIS Map and Data Viewer
DEQ GIS lists only Oklahoma Accredited Laboratories for accredited laboratories outside Oklahoma please refer to "List of Laboratories Accredited for General Water Quality and Drinking Water"

test tubes

DMR-QA PERMIT WAIVER

DMR-QA Study Participation Waiver (PDF)

EPA 2012 MUR SM 22ed Approval Letter (PDF)

WHAT'S NEW

OAC 252:307 adopted September 2015 effective January 1, 2016. At this time the state is in the process of recognition. Please revisit at a later date.

Links to the Laboratory Accreditation Rules may be found at:

Consumer Price Index Adjustment to Lab Accreditation Fees
Annual fees for Laboratory Accreditation were increased by 1.015% based on changes in the Consumer Price Index and as provided by 252:301-1-9(d). Invoices for FY 2015 renewals reflected this change.

FY 17 Laboratory Accreditation Fees
FY 17 Field Laboratory Accreditation Fees

TOTAL PETROLEUM HYDROCARBONS METHODS

TNRCC 1005 (Adobe Acrobat)

OK GRO Method Rev 4.1(Adobe Acrobat)

OK DRO Method Rev 4.1 (Adobe Acrobat)

Application for field accreditation - Initial:Renewal

Field Accreditation Application

Application for general water quality/sludge testing accreditation - Initial:Renewal

General Water Quality Laboratory Accreditation Applications

Application for drinking water accreditation - Initial:Renewal

Drinking Water Laboratory Accreditation Applications

EPA's Drinking Water Guidance Manual

The EPA provides a guidance document entitled "Manual for the Certification of Laboratories Analyzing Drinking Water, Fifth Edition." Please refer to this document for specific questions concerning drinking water accreditation requirements.

Supplement 1 to the 5th Edition of the Manual for the Certification of Laboratories Analyzing Drinking Water

Supplement 2 to the 5th Edition of the Manual for the Certification of Laboratories Analyzing Drinking Water

The NELAC Institute (TNI)

Information concerning The NELAC standards and guidance for implementation may be found at the following links:

TNI Web Site

TNI Standards

TNI Templates and Guidance Documents