Authoritative resources · Vetted Wisconsin-specific sources
Wisconsin Radon Resources — Authoritative Directory
Vetted directory of the most authoritative US and Wisconsin-specific radon resources: federal agency guidance, state program contacts, certification verification systems, geological research, and homeowner + healthcare provider materials. Every listing below is independently maintained by the named authority — links open in a new tab so you can verify against the source directly.
Federal & international authorities
Federal Agencies + International Bodies
- US Environmental Protection Agency (EPA) Radon Program — Foundational US radon guidance, action level (4 pCi/L), and consumer publications. epa.gov/radon
- EPA A Citizen's Guide to Radon (EPA 402/K-12/002, 16 pp.) — Free PDF, the primary consumer reference. epa.gov citizen's guide
- EPA Home Buyer's and Seller's Guide to Radon (EPA 402/K-13/002) — Real-estate-transaction-specific. epa.gov buyer/seller guide
- EPA Map of Radon Zones — Predictive radon zone classifications (Zone 1 highest predicted, Zone 3 lowest) by county. Wisconsin has 26 Zone 1 counties and 44 Zone 2 counties. epa.gov radon zones
- US Surgeon General Health Advisory on Radon — 2005 official health advisory recommending all US homes be tested. epa.gov health risk
- World Health Organization (WHO) Handbook on Indoor Radon (2009) — International clinical reference, 2.7 pCi/L WHO action level. who.int handbook
- US National Cancer Institute — Radon and Cancer Fact Sheet — NCI clinical reference. cancer.gov radon
- HUD Healthy Homes Program — federal multifamily housing radon guidance. hud.gov healthy homes
Wisconsin state authorities
Wisconsin State Agencies + Programs
- Wisconsin Radon Program — WI Department of Health Services (DHS) — State radon program lead. Coordinates regional Radon Information Centers, public outreach, and low-cost test kits. 888-569-7236 · dhs.wisconsin.gov radon
- Wis. Stat. §709.03 — Real Estate Condition Report — Statutory disclosure obligation: sellers must disclose known prior radon testing on form WB-3. legis.wisconsin.gov §709.03
- Wis. Admin. Code §DCF 250.06(6)(a) — Child Care Center Radon Testing — Wisconsin's only mandatory radon testing law (effective March 2023); applies to licensed group child care centers. DCF 250.06
- No state licensing for radon contractors — Wisconsin does not register or license radon professionals at the state level. Verify national NRPP/NRSB certification instead (see Industry Standards below).
- Regional Radon Information Centers — WI DHS partners with local health departments and agencies across the state to distribute test kits and answer homeowner questions; find your nearest center through the Wisconsin Radon Program.
Industry standards + certification
Industry Standards, Certification, and Professional Bodies
- AARST (American Association of Radon Scientists and Technologists) — Industry standards body. Publishes AARST-ANSI installation + measurement standards. aarst.org
- NRPP (National Radon Proficiency Program) — Primary US individual + corporate certification. With no Wisconsin state registration, NRPP (or NRSB) national certification is the credential to verify. nrpp.info
- NRSB (National Radon Safety Board) — Alternative US individual certification, equally recognized by WI DHS. nrsb.org
- AARST find-a-pro directory — Search AARST-member certified pros by ZIP. aarst-nrpp.com find-a-pro
- AARST-ANSI MS-PC 2014 — Measurement protocol standard for radon-in-air testing. Reference for understanding what defensible test methodology requires.
- AARST-ANSI SGM-SF 2017 — Soil gas mitigation standard for single-family residential active sub-slab depressurization systems. Reference for understanding what a code-compliant install looks like.
Medical + health authorities
Medical Authorities + Patient Education
- American Lung Association (ALA) — Radon — Most-cited US patient + clinical authority. Healthcare Provider Decision Support Tool (2024). lung.org/radon
- ALA Wisconsin Chapter — Wisconsin-specific advocacy + community resources. lung.org/wi
- American Cancer Society — Radon — Patient-facing cancer-risk framing. cancer.org radon
- CDC Radon Topic Hub — Centers for Disease Control radon overview. cdc.gov/radon
- USPSTF Lung Cancer Screening Recommendations (2021) — Low-dose CT screening criteria. Note: radon exposure is not currently a USPSTF screening trigger but is referenced by some pulmonology societies for shared decision-making in elevated-exposure never-smokers. uspstf lung cancer screening
- Wisconsin Radon Experts For Healthcare Providers page — Wisconsin-specific HCP framework, screening guidance, ICD-coding context, patient handouts. wisconsinradonexperts.com/providers
Research + academic sources
Geological + Peer-Reviewed Sources
- Wisconsin Geological and Natural History Survey (WGNHS, UW–Madison) — State authority on Wisconsin bedrock and surficial geology; context for where radon concentrates across the Cambrian sandstone, dolomite, and Driftless Area formations. wgnhs.wisc.edu
- EPA Map of Radon Zones — Wisconsin — County-level predictive classifications; 26 Wisconsin counties are Zone 1 (highest predicted), 44 are Zone 2, none Zone 3. epa.gov radon zones
- BEIR VI Report — Health Effects of Exposure to Indoor Radon — National Academy of Sciences, 1999. Definitive US assessment of radon-lung-cancer dose-response. nap.edu BEIR VI
- WHO Handbook on Indoor Radon (2009) — International epidemiology + clinical synthesis. who.int handbook
- EPA National Residential Radon Survey — Foundational federal state-level radon dataset. Citation: U.S. EPA, "National Residential Radon Survey: Summary Report" (EPA 402/R-92/011).
Authority resource FAQ
Common Wisconsin Radon Resource Questions
Frequently Asked Questions
Where can I download the EPA radon guide for free?
The EPA "A Citizen's Guide to Radon" (EPA 402/K-12/002) is published free at epa.gov/radon. It is the foundational US consumer guide to indoor radon — covering health effects, testing methods, mitigation options, and the EPA action level. Spanish-language version also available at the same URL. The companion document, "Home Buyer's and Seller's Guide to Radon" (EPA 402/K-13/002), addresses real-estate-transaction-specific guidance.
How do I verify a Wisconsin radon contractor's NRPP certification?
Search the National Radon Proficiency Program directory at nrpp.info — enter the contractor's name or NRPP certification number to see active credentials, certification type (measurement vs mitigation), and expiration date. NRPP certifications expire every 2 years; verify the contractor's cert is current before scheduling work. You can also verify National Radon Safety Board (NRSB) credentials at nrsb.org. Because Wisconsin does not run a state registration program, this national certification is the credential to confirm. Wisconsin Radon Experts verifies NRPP/NRSB certification independently before routing leads to any partner contractor.
Does Wisconsin require radon contractors to be state-licensed?
No. Wisconsin does not maintain a state-level licensing or registration program for radon measurement or mitigation professionals. The Wisconsin Department of Health Services (WI DHS) recommends hiring contractors who hold national NRPP (National Radon Proficiency Program) or NRSB (National Radon Safety Board) certification and who follow AARST-ANSI installation standards. Verify NRPP at nrpp.info or NRSB at nrsb.org before any work begins.
Does Wisconsin require radon testing in schools or child care centers?
Wisconsin has no statewide school radon testing mandate. However, Wis. Admin. Code §DCF 250.06(6)(a) — effective March 2023 — requires licensed group child care centers to test for radon, making it Wisconsin's only mandatory radon testing law. For home sales, Wis. Stat. §709.03 requires sellers to disclose known prior radon testing on the Real Estate Condition Report (form WB-3); it does not require testing, only disclosure of what is known.
What Wisconsin institutions publish radon information?
The Wisconsin Radon Program within WI DHS is the primary state authority, coordinating regional Radon Information Centers across the state for test kits and guidance. The Wisconsin Geological and Natural History Survey (WGNHS, UW–Madison) publishes on the state's bedrock and surficial geology — including the Cambrian sandstone, dolomite, and Driftless Area formations that influence where radon concentrates. National research bodies (EPA, the National Academies' BEIR VI report, and WHO) provide the underlying dose-response science.
Is residential radon testing covered by Wisconsin Medicaid?
No. Residential radon test kits and professional mitigation are NOT covered by Wisconsin Medicaid (BadgerCare), Medicare, or any major commercial health insurance carrier in 2026. Radon is classified as an environmental hazard rather than a medical service. Self-pay test kits cost $15-30 (hardware store, ALA, or a regional Radon Information Center); professional mitigation $1,000-$2,500. Some Energy Efficient Mortgage (EEM) products allow mitigation cost to be financed into a home loan.
Need to act on a radon test result?
Wisconsin Radon Experts routes Wisconsin homeowners to NRPP/NRSB-certified partner contractors. Free quote within 24 hours · $1,000-$2,500 typical install.