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Jerauld County has fewer than 30 tests on record, so it doesn't meet our indexing gate. It appears as a row in the South Dakota county table instead.
70% of 23 radon tests here were at or above 4 pCi/L (EPA's action level). Data through 2017. Source: Radon test results from laboratories.
Data through 2017 · Radon test results from laboratories
Jerauld County has fewer than 30 tests on record, so it doesn't meet our indexing gate. It appears as a row in the South Dakota county table instead.