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Laboratory Accreditation Program

What's New?

  • June 30, 2022 – Upon “Environmental Laboratory Accreditation Proficiency Test Study Requirements” Notice published in the Pennsylvania Bulletin Volume 52 Issue 25, Saturday, June 18, 2022, the four Fields of Proficiency Testing documents under the Proficiency Testing (PT) heading have been updated.
  • June 16, 2022 – New Rev. 6/2022 for Part 1 – Initial/Renewal Application is now available. Please ensure you submit application using the current revision.
  • May 25, 2022 – Revision 2 of the Traceability of Measurements document (G019) is now available under the Compliance Assistance heading.
  • March 17, 2022 - New Rev. 3/2022 for Request to Report Qualified Drinking Water Sample Results is now available. Please ensure you submit request using the current revision.

Forms & Applications

Proficiency Testing (PT)

Procedures & Methods

Compliance Assistance

Search Environmental Laboratories

PA State Regulations

The NELAC Institute (TNI)

Related Information

Contact Us

Mailing and Physical Addresses

US Postal Service :

Department of Environmental Protection
Bureau of Laboratories
Attn: Laboratory Accreditation Program
PO Box 1467
Harrisburg, PA 17105-1467

Other modes of delivery (UPS, Fed Ex, etc):

Department of Environmental Protection
Bureau of Laboratories
Attn: Laboratory Accreditation Program
2575 Interstate Drive
Harrisburg, PA 17110-9332