Certified Radon Mitigators
in Fargo, North Dakota

Fargo and Cass County sit in EPA Radon Zone 1, with North Dakota's statewide average ranking among the top five nationally. Over 60% of tested homes in North Dakota exceed the EPA action level of 4 pCi/L. Fargo's full-basement housing stock — standard for Northern Plains frost protection — accumulates radon efficiently, with untreated homes frequently testing between 15 and 30 pCi/L. The Red River Valley's glacially deposited uranium-bearing till and flat permeable terrain allow radon gas to migrate upward with minimal resistance. Fargo's long cold winters mean homes are sealed tightly from October through April, concentrating radon indoors.