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South Dakota consistently ranks among the highest-radon states in the nation. Here's why – and what it means for your home.
If you live in South Dakota, radon isn't a rare, far-off risk – it's a local reality. The state ranks among the highest in the country for indoor radon, and much of it, including the Sioux Falls area, sits in the EPA's highest radon zone (Zone 1).
It comes down to geology. The glacial deposits and uranium-bearing soils across the region produce large amounts of radon gas, and the cold-climate housing here – sealed up tight with basements – gives it a place to accumulate. That combination is why so many homes test high.
Because the odds of an elevated result are so high here, testing is the responsible default for every home. Test your home, and if it's above the action level, mitigation brings it down for good.
Testing isn't universally mandated, but given how high SD's radon levels are, it's strongly recommended for every home – and it's a standard part of most real-estate transactions.
Not necessarily. Radon comes from the soil, so even brand-new homes on high-radon ground can test well above the action level. Always test.
Tell us about your home and we'll get right back to you. Serving Sioux Falls and the surrounding metro.