Radon Mitigation by City

Pennsylvania is EPA Radon Zone 1. Philadelphia homes often test 4-15 pCi/L. Find certified mitigators nearby.

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North Carolina Piedmont homes often test elevated for radon. Charlotte averages 4-12 pCi/L. Find mitigation help here.

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Minnesota is EPA Radon Zone 1. Minneapolis has state radon disclosure laws. Typical homes test 4-18 pCi/L.

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New Jersey requires radon testing for real estate sales. Newark homes test 3-10 pCi/L. Find certified mitigators.

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Illinois is EPA Radon Zone 1. Chicago homes average 4-20 pCi/L. Find certified mitigators in Cook County.

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Colorado is EPA Radon Zone 1. Denver homes average 5-20 pCi/L. Find certified mitigators near you.

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Indiana is EPA Radon Zone 1. Indianapolis homes are in the 2nd-highest market. Find certified mitigators here.

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Ohio is EPA Radon Zone 1. Cleveland homes test 4-20 pCi/L. Find NRPP-certified radon mitigators in Cuyahoga County.

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Franklin County is EPA Radon Zone 1. Columbus homes average 5-18 pCi/L. Find certified radon mitigators near you.

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Pittsburgh is one of the highest-radon cities in America. Homes average 8-25 pCi/L. Find certified mitigators in Allegheny County.

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Michigan is EPA Radon Zone 1. Detroit metro homes test 4-15 pCi/L. Find certified mitigators in Wayne and Oakland Counties.

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Missouri is EPA Radon Zone 1 in the north. Kansas City homes test 4-16 pCi/L. Find certified mitigators in Jackson County.

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Iowa has the highest average radon in the US at 8.5 pCi/L. Des Moines homes regularly test 8-30 pCi/L. Find certified mitigators.

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Nebraska is EPA Radon Zone 1. Omaha homes average 5-18 pCi/L. Find certified radon mitigators in Douglas County.

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Wisconsin is EPA Radon Zone 1. Milwaukee homes test 4-15 pCi/L. Find NRPP-certified radon mitigators in Milwaukee County.

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St. Louis area homes test 4-14 pCi/L. Missouri Zone 1 counties surround the metro. Find certified radon mitigators.

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Hamilton County is EPA Radon Zone 1. Cincinnati homes test 4-18 pCi/L. Find certified radon mitigators near you.

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Kentucky is EPA Radon Zone 1 in the north. Louisville homes test 4-15 pCi/L. Find certified radon mitigators.

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Summit County is EPA Radon Zone 1. Akron homes test 5-20 pCi/L. Find certified radon mitigators in Northeast Ohio.

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Montgomery County is EPA Radon Zone 1. Ohio averages 7.5 pCi/L. Dayton homes test 5-18 pCi/L. Find certified radon mitigators.

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West Michigan is EPA Radon Zone 1 (highest risk). Grand Rapids homes average 4-15 pCi/L. Find EPA-certified radon mitigators in Kent County.

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The Lehigh Valley sits on the Reading Prong — one of the highest-radon formations in the US. Homes test 10-40 pCi/L.

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Colorado Springs is in EPA Zone 1. Colorado averages 15 pCi/L — the highest in the US. Most homes need radon mitigation.

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Ohio is EPA Radon Zone 1. Toledo homes test 4-18 pCi/L. Find certified radon mitigators in Lucas County.

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Pennsylvania is EPA Radon Zone 1. Harrisburg homes test 4-15 pCi/L. Find certified radon mitigators in Dauphin County.

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Iowa is the #1 highest radon state; Cedar Rapids is EPA Zone 1. Linn County homes test 8-30+ pCi/L. Find NRPP-certified mitigators.

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Baltimore sits in EPA Radon Zone 2. Older row homes and basements frequently test above 4 pCi/L. Find NRPP-certified mitigators near you.

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Connecticut averages 3.7 pCi/L with higher concentrations in the Hartford region. Find NRPP-certified radon mitigators near Hartford.

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Western New York has significant radon risk. Find certified radon mitigators serving Buffalo and Erie County.

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Syracuse and Onondaga County have notable radon risk from local geology. Find NRPP-certified radon mitigators near Syracuse.

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Lansing and mid-Michigan have significant radon risk from glacial geology. Find NRPP-certified radon mitigators serving Lansing and Ingham County.

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Kansas averages over 7 pCi/L — among the highest in the nation. Find certified radon mitigators in Wichita and Sedgwick County.

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Sioux Falls faces severe radon risk—South Dakota averages 10.2 pCi/L, among the highest in the nation. Get a free quote from NRPP-certified radon mitigators.

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Fargo sits in EPA Zone 1 with some of the nation's highest radon levels. Over 60% of ND homes test above 4 pCi/L. Get quotes from NRPP-certified mitigators.

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Nebraska is EPA Radon Zone 1. Lincoln homes average 5–15 pCi/L. Find NRPP-certified radon mitigators in Lancaster County.

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Illinois's state capital sits in EPA Radon Zone 1. Springfield homes average 4–16 pCi/L. Find IEMA-licensed, NRPP-certified mitigators in Sangamon County.

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Northern Illinois is EPA Radon Zone 1. Find IEMA-licensed radon mitigators serving Rockford and Winnebago County.

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Central Illinois is EPA Radon Zone 1. Find IEMA-licensed radon mitigators serving Peoria and Peoria County.

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Kansas is one of the highest-radon states at 7+ pCi/L. Find certified radon mitigators in Topeka and Shawnee County.

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South Dakota is the highest-radon state. Black Hills geology makes Rapid City one of the highest-risk metros in the US.

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North Dakota is a high-radon state. Find NRPP-certified radon mitigators serving Bismarck and Burleigh County.

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Idaho is EPA Radon Zone 1. Boise homes frequently test above EPA action levels. Find NRPP/NRSB-certified radon mitigation contractors and get quotes.

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Knoxville sits in EPA Zone 1. Knox County homes often test 4-6 pCi/L. Find NRPP-certified mitigators near you.

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Richmond sits at the edge of EPA Zone 2. Many central Virginia homes test 2-6 pCi/L. Find certified mitigators near you.

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Madison sits in EPA Zone 1. Dane County homes commonly test 6-12 pCi/L. Find NRPP-certified mitigators near you.

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Spokane is in EPA Zone 1. Spokane County homes often test 4-10 pCi/L — among the highest in Washington. Find certified mitigators here.

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Salt Lake County is EPA Zone 1. Many Salt Lake City homes test 4-10 pCi/L. Find NRPP-certified mitigators in your area.

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Lexington sits in EPA Zone 1. Fayette County homes often test 4-8 pCi/L. Find NRPP-certified mitigators serving central Kentucky.

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Chattanooga sits in EPA Zone 1. Hamilton County homes often test 4-7 pCi/L. Find NRPP-certified mitigators in southeast Tennessee.

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Boulder County is EPA Zone 1. Many homes test 6-15 pCi/L — among the highest in Colorado. Find certified mitigators here.

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Fort Collins is EPA Zone 1. Larimer County homes commonly test 6-12 pCi/L. Find NRPP-certified mitigators here.

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Ann Arbor is in EPA Zone 1. Washtenaw County homes often test 4-8 pCi/L. Find NRPP-certified mitigators serving southeast Michigan.

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Rochester is in EPA Zone 1. Monroe County homes often test 4-8 pCi/L. Find NRPP-certified mitigators in western New York.

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Lancaster County is in EPA Zone 1. Homes commonly test 6-15 pCi/L — among the highest in Pennsylvania. Find certified mitigators here.

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Hartford has notable radon potential. Connecticut homes test for radon as part of health-conscious home maintenance. Find certified mitigators here.

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Natrona County is EPA Zone 1. Wyoming averages 6.7 pCi/L — nearly double the EPA action level. Find NRPP-certified radon mitigators in Casper.

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Gallatin County is EPA Zone 1. Montana ranks among the highest-radon states. Bozeman median levels regularly exceed 6 pCi/L. Find certified mitigators.

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Billings is EPA Zone 1. Montana averages 6–8 pCi/L and roughly 60% of Yellowstone County homes exceed the EPA action level. Find certified mitigators.

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