By using Radon411 you agree to these terms. They are written to be read, not to trap anyone; if something here is unclear, the plain reading is the one we mean.
The site is informational, not a substitute for testing or professional advice
Radon411 publishes predicted radon potential, reported test statistics, educational content and a professional directory. None of this substitutes for testing a specific building; EPA is explicit that testing is the only way to know the radon level in a specific building. Nothing on this site is medical advice, and nothing on this site diagnoses a health condition or estimates an individual's health risk.
Data accuracy
We source every figure we publish and document our methodology at /data/methodology/. Data can be incomplete, delayed relative to its original source, or (rarely) wrong. Figures follow the official publications behind them and change when the publishing agencies issue an update, as the corrections page explains; we do not knowingly publish a fabricated figure.
Location Reports
Checkout is not open yet, so nothing can be bought today. These terms apply once it opens.
What you get. A Location Report is one dated document of up to 33 pages for one place, with the sections you choose: the area's EPA zone and the radon tests reported there, how to test your home, what the figures mean, and the other sections listed in the builder. It is area data, compiled from public sources; it is not a measurement of any building, an inspection or professional advice.
Price. One report (a Radon Action Brief for one place) is $25. A pack of 10 is $190 and a pack of 25 is $375. For National Radon Action Month, through January 31, 2027, they are $8.99, $69 and $149; from February 1, 2027 the prices above apply. The price is the whole price: nothing is added for card processing, and the sections you choose never change it.
Delivery. The report is digital. Right after payment it opens on its own private page, ready to print or save as a PDF, and the link is sent to the email you give at checkout. The link works for 12 months; anyone you share it with can read the report. Pack credits work for any places and are used within 12 months of payment. Nothing renews and there is no subscription.
Refunds. Because the report is delivered as soon as it is paid for, a payment is not refundable once the report is delivered, unless the law where you live gives you a right to a refund, or we choose to make one (for example, when a report could not be delivered). A refund goes back to the card through our payment processor. Once a payment is refunded in full, the report's link stops showing it, and a refunded pack's unused credits stop working; a report made with a pack credit and refunded gives the credit back to the pack.
Directory listings
Professional directory listings are informational, built from the licence and certification lists state agencies publish. A verification badge reflects what we have specifically confirmed and how, shown on the listing itself; it is not a guarantee of a business's work, licensing status, or insurance, which you should confirm directly with the business and your state's licensing authority. If a listing is wrong, use the "Something wrong with this listing?" link on the business's profile.
Featured listings
Featured is the one paid placement in the directory, for businesses that verify they own their listing. Featured businesses appear in a band labelled Featured, with their own profile text and service areas. These are the terms shown at sign-up:
- $399.50 for the first year (half price), then $799 a year, billed once a year.
- Non-refundable once paid.
- Renews each year unless you cancel before the renewal date.
- Never buys verification or a certification badge.
The business is responsible for what it writes in its Featured profile being true and its own to publish. We may remove Featured text that is false, misleading or unlawful.
Product comparisons
Product pages present specification comparisons drawn from manufacturer and retailer data, not hands-on testing we have performed ourselves, and say so. Product links go to Amazon and are affiliate links, disclosed where they appear.
Using what we publish
The figures come from public agencies, and most of them are U.S. government works in the public domain. You can get them from the agencies themselves; each source and its own licence terms are listed on /data/sources/. Radon411's own work (its text, the way the data is compiled and presented, its maps, illustrations, reports and directory) is not licensed for reuse: ask us first before copying it in bulk, republishing it or building a product or dataset from it. Quoting a short passage or a single figure with a link back to the page is fine.
Do not scrape the site in a way that strains it or gets around its usage limits, and do not use it to collect contact details from the directory for marketing.
Limits of liability
The site and the reports are provided as they are, without any warranty that they are complete, current or fit for a particular purpose. Decisions about testing, mitigation, buying, selling or renting are yours, and should rest on a test of the building and on qualified advice. To the extent the law allows, Radon411 is not liable for any indirect or consequential loss arising from the use of the site, and its total liability for any claim is limited to what you paid Radon411 in the 12 months before it. Nothing here limits a right that the law where you live does not allow to be limited.
Changes
We may update these terms as the site changes. The date at the top of this page reflects the last update; a purchase is governed by the terms in place when it was made.