§ 4.1 — Cedar Lake, IN
Certified radon testing in Cedar Lake, IN
2 current listings from the official file. Verify the credential number before you hire.
Certified radon testingCertified radon mitigation
Jonathan Stanley Wharton
current IN IPLA № RTP01467
August 29, 2026cite ↗Larry D Giannini
current IN IPLA № RTP01416
August 29, 2026cite ↗
Appendix A — Before you hire
- Who holds the credential, and can they show the same number that appears on this page?
- What test method or mitigation system will they use for this building?
- How will they document results or the finished system?
§ 4.3
Nearby places in Indiana
- Crown Point, IN
- Schererville, IN
- Dyer, IN
- Merrillville, IN
- Highland, IN
- Portage, IN
- Valparaiso, IN
- Kouts, IN
Indiana licenses radon testers and mitigators. The people below appear as Active on the official IPLA license verification search we imported (primary testers, secondary testers, and mitigators). Laboratory testers are not listed here. Read the methodology. Credential status can change.