​​​​​​​​​​​​​​​​​​Radon Services Directory

Certified Testers:

• Testers Sorted Alphabetically by Name (PDF)
• Testers Sorted Alphabetically by County (PDF)

Certified Mitigators:

• Mitigators Sorted Alphabetically by Name (PDF)
• Mitigators Sorted Alphabetically by County (PDF)

Certified Laboratories:

• Laboratories Sorted Alphabetically by Name (PDF)
• Laboratories Sorted Alphabetically by County (PDF)

Above lists updated October 1, 2024​

• Certified individuals
• Certified firms
• DEP listed testing firm employees
  All DEP-listed Testing Firm Employees have an ID number in the 8000 series
• DEP-listed mitigation firm employees
  All DEP-listed Mitigation Firm Employees have an ID number in the 7000 series
  

The coding description for the different types of radon test devices is listed below.

• E Electret Ion Chamber
• A Alpha Track Detector
• C Charcoal Canister
• CW Continuous Working Level Monitor
• CR Continuous Radon Monitor
• LS Liquid Scintillation

Since certification status may change, the Bureau of Radiation Protection updates these lists monthly. To verify certification, check for a current DEP ID Card and/or certification certificate.​