EPA Zone 1 (Highest Risk)☢️ Avg: 5.0 pCi/L

Radon Testing & Mitigation in Milwaukee, Wisconsin

Milwaukee and southeastern Wisconsin face a persistent radon challenge driven by the region's glacial geology and cold-climate construction practices. Tight, well-insulated homes with deep basements are the norm here — and they're also ideal radon traps.

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Avg Radon Level

5.0 pCi/L

EPA action: 4.0 pCi/L

EPA Zone

Zone 1

Highest Risk

Metro Population

1.6 million

Service area

Avg Mitigation

$1,100 – $2,200

Installed cost

Avg Testing

$125 – $350

Professional test

Radon Facts for Milwaukee, WI

1Milwaukee County and surrounding counties are all EPA Zone 1
2Wisconsin's cold winters mean homes are sealed for months — concentrating radon
3The Wisconsin DHS maintains an active radon program and contractor registry
4Milwaukee's older housing stock with limestone foundations is especially vulnerable
5Wisconsin requires radon disclosure in real estate transactions

🏠 Milwaukee Housing Stock

Classic Midwest — older brick and stone homes in Milwaukee, post-war suburbs in Waukesha and Ozaukee counties, all with basements

📋 Real Estate & Radon Disclosure

Wisconsin's Real Estate Condition Report requires sellers to disclose radon test results. Milwaukee-area buyers routinely request testing.

Why Milwaukee Homes Need Radon Testing

With average radon levels of 5.0 pCi/L in the Milwaukee metro area — well above the EPA’s recommended action level of 4.0 pCi/L — professional radon testing isn’t optional, it’s essential.

Radon inspector testing a home in Milwaukee

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High Local Levels

Milwaukee’s average of 5.0 pCi/L means a significant percentage of homes exceed the EPA action level. The only way to know your home’s level is to test.

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Local Housing Factors

Milwaukee’s housing stock — classic midwest — older brick and stone homes in milwaukee, post-war suburbs in waukesha and ozaukee counties, all with … — creates conditions where radon can enter and accumulate.

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Wisconsin Disclosure Laws

Wisconsin's Real Estate Condition Report requires sellers to disclose radon test results. Milwaukee-area buyers routinely request testing.… Proactive testing protects both buyers and sellers.

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Family Health Risk

Radon is the #2 cause of lung cancer in the US, responsible for 21,000 deaths annually. Long-term exposure in a high-radon area like Milwaukee increases risk significantly.

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