Editorial policy

Independence

Editorial decisions are made by the editorial team, not by merchants. A mitigation contractor, a testing company or an equipment seller cannot buy a ranking, a score, a "best" label, a place in a roundup, or a cost band. We do not accept money for a homeowner's contact details and we do not run a lead form.

Sourcing

Cost figures come from EPA publications, EIA electricity tables and state radon program pages. Zone definitions come from EPA's own map documentation. A statistic without a named source is removed. Estimates are labelled and their inputs are shown, including the arithmetic behind any running-cost figure.

Health claims

We do not diagnose and we do not give medical advice. We report the EPA action level (4 pCi/L), the EPA position that there is no safe level of radon, and the health literature in general terms. Where a page recommends an action — testing, mitigating, retesting — it recommends consulting a certified professional, and it says so.

Commercial links

Where a page carries a link that earns us a commission, it is marked withrel="sponsored" and disclosed on the page. The commission does not change the price you pay and never moves a guide up a page. See thefull disclosure.

Legal and regulatory claims

Claims about state requirements are verified against the statute or the state program page before publication. Where a widely repeated claim turns out to be wrong — for example that a state requires radon testing at the sale of a home, when in fact it requires only a disclosure or pamphlet — the page says so explicitly rather than repeating the myth.

Corrections

We correct factual errors promptly and note the update date. To report an error, email contact@radonlab.comwith the URL and a source.

AI assistance

Drafts may be prepared with software assistance, but every published article is reviewed against its sources by the editorial team. We do not publish unreviewed generated text.

Review cycle

Cost guides are rechecked quarterly and whenever EIA publishes a new residential electricity average. Zone pages are rechecked when EPA updates its map. System guides are rechecked when EPA or a state program revises its guidance. A page that has not been reviewed in twelve months is flagged in the editorial calendar rather than left to drift.