Radon by city in the Salt Lake Valley
Each city guide pairs Utah's state radon test data for that area with Census housing data, because how old your house is changes what a mitigation system looks like.
| City guide | State test areas (2006–2019 average, pCi/L) | Median year built |
|---|---|---|
| Sandy | Northeast 7.0 · Southeast 5.8 · Center 3.3 · West 3.5 | 1985 |
| South Jordan | South Jordan 5.0 · Daybreak 4.9 | 2007 |
| West Jordan | Southeast 5.5 · Northeast 4.8 · West/Copperton 4.5 | 1995 |
| Herriman and Riverton | Herriman 5.8 · Riverton/Bluffdale 5.8 | 2013 / 2001 |
| Draper | Draper 4.5 | 2003 |
| Millcreek | South 4.7 · East 4.3 | 1973 |
| Holladay | Holladay 4.6 | 1969 |
Sources: Utah IBIS short-term radon test data (Source: Utah IBIS); U.S. Census ACS 2020–2024 (Source: U.S. Census ACS).
Other cities we serve
We also connect homeowners in Salt Lake City, Bluffdale, Murray, Cottonwood Heights, Midvale, Taylorsville, West Valley City, South Salt Lake, Kearns, Magna. Their state test data is in the full Salt Lake Valley table. We'll add a city guide when we have something genuinely specific to say about that city.
What's the same everywhere in the valley
- Utah requires a licensed contractor for mitigation work (Source: Utah DEQ). Check a license.
- EPA's action level is 4 pCi/L; consider fixing between 2 and 4 (Source: EPA).
- A typical Utah system costs about $1,800–$2,000 (Source: Utah DEQ). Cost details and estimator.
Sources
Last reviewed October 22, 2026.
- Indoor radon levels by county and ZIP, query module (short-term tests 2006–2019; dataset updated Jan. 31, 2020), Utah Dept. of Health and Human Services / Utah DEQ Indoor Radon Program. Accessed October 22, 2026.
- American Community Survey 2020–2024 5-year estimates, tables B25034, B25035, B25003 (via Census Reporter), U.S. Census Bureau. Accessed October 22, 2026.
- State qualifications for radon mitigation professionals, Utah Department of Environmental Quality. Accessed October 22, 2026.
- Home Buyer's and Seller's Guide to Radon (EPA 402/K-24/001, rev. March 2024), U.S. Environmental Protection Agency. Accessed October 22, 2026.
- High radon levels? What's next, Utah Department of Environmental Quality. Accessed October 22, 2026.