Calhoun County
Local NEHA certified Radon Measurement Specialists
Certified Radon Inspectors
NEHA Certified Radon Measurement Specialists
| Company | Inspector | Phone | City | County |
| American Environmental Solutions | Paul D. Reichle | (636) 528-1554 | Troy | Lincoln |
| House Doctor Home Inspection | David Sumers | (636) 288-8595 | St Peters | Saint Charles |
| Kingdom Inspection Network Group - St Louis | Mark D. Nahrgang | (636) 278-1849 | St. Peters | Saint Charles |
| ACE Home Inspection | Scott R. Knight | (636) 978-9111 | St. Peters | Saint Charles |