Editorial standards
AI use disclosure
City pages are drafted with AI (Claude Sonnet 4.6), reviewed by our editorial team, and published only after passing uniqueness and factual-accuracy checks. One in every ten pages receives full human review.
Sourcing
- Radon contractor licensing and program rules: Iowa Department of Public Health (IDPH) Radon Program under Iowa Code Chapter 136B and 641 IAC Chapter 43.
- National measurement and mitigation credentialing: National Radon Proficiency Program (NRPP) and National Radon Safety Board (NRSB).
- Risk and action-level guidance: EPA Citizen's Guide to Radon, EPA Radon Zone maps, and EPA Indoor Air Quality (IAQ) publications.
- Cancer-burden data and tracking: Iowa Cancer Registry (University of Iowa State Health Registry of Iowa), Centers for Disease Control (CDC) lung-cancer surveillance, and the Surgeon General's radon advisory.
- Iowa geology and uranium-decay substrate: Iowa Geological Survey (University of Iowa) and USGS Iowa.
- Climate, closed-house conditions, and seasonal-test guidance: NWS Des Moines (DMX), NWS Davenport-Quad Cities (DVN), and NWS Sioux Falls (FSD) — the offices serving Iowa.
- Real-estate-transfer disclosure: Iowa Real Estate Commission and the Iowa Association of Realtors.
- City populations: US Census Bureau (2020).
- Cost data: aggregated from HomeAdvisor, Angi, AARST-NRPP price surveys, and IDPH mitigation-contractor quote samples for the Midwest market.
Corrections
Factual errors: email corrections@iaradonmitigation.com. We investigate within 7 business days.
What we do not do
- Do not publish fake reviews or fabricated contractor profiles.
- Do not claim IDPH licenses or NRPP/NRSB credentials we do not hold (we are a referral directory).
- Do not perform radon testing, system design, or installation — work is by independent IDPH-licensed specialists.
- Do not provide medical, legal, or real-estate-disclosure advice. EPA action-level guidance, Iowa Real Estate Commission disclosure forms, and IDPH program rules can change; always confirm with the authority of jurisdiction before relying on a specific number.