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Laboratory Accreditation

Certification & Registration

The DNR accredits laboratories to perform testing in aqueous (non-potable water), non-aqueous, and drinking water (potable water) samples for the agency’s covered programs. Accreditation is available as a certified laboratory (can perform testing on compliance samples for other facilities) and as a registered laboratory (performs testing on their own samples only).

Laboratories

Download Excel and PDF files of WI laboratory certifications by area of interest

BOD Analysis

Biochemical Oxygen Demand (BOD)

Documents

Spreadsheets, forms, checklists and documents to help with laboratory testing

Training

Information and resources related to performing laboratory testing

Frequently Asked Questions

The laboratory accreditation program fields many questions from laboratory staff each day

Applications

Applications for registration and certification

Annual Renewal

Registration and certification requirements for annual renewal
Annual Renewal

Private Wells

Information and resources for homeowners related to private well testing
Private Wells

Laboratory Standards Review Council

Council meeting announcements and minutes
Laboratory Standards Review Council

Proficiency Testing

Resources related to WI PT requirements
Proficiency Testing

Lab of the Year

Past award winners and a description about the award
Lab of the Year