Canadian Radon Services Index
Menu

How to report an error, and the log of corrections made

How to report an error to the Canadian Radon Services Index, how quickly corrections are made, and the dated log of every correction.

To report an error on this site, use the form on this page, below the policy. Tell us the page address and the statement you believe is wrong. On every other page, the link “See something wrong? Report it.” brings you to this form. This page holds the policy for how we handle a report. Below it is the log of every material correction, newest first, kept on this page from launch.

Send the page address, the claim in question and the source that contradicts it

A report needs:

  • the page address
  • the statement in question
  • what you believe is wrong with it
  • a supporting source if you have one

You do not need to be an expert to report an error. Say what you believe is wrong in your own words. A report without a source is still checked. That includes a report from a listed professional, a journalist or an organization we cite.

Send your report with the form below, or email hello@canadianradonservicesindex.ca.

We check the source before changing anything

We acknowledge a report within 2 business days. Then we check the statement against the source our sourcing policy names for that kind of claim. If the source shows the statement is wrong, we correct the page and add a note. We fix a data or safety error within 5 business days, and any other substantive error within 15.

A claim that cannot safely stay online while we check it is amended or removed in the meantime. When a source issues a new edition or materially changes its guidance, we update the page. Where the change affects what you were told before, we name the source change on the page. See which source we check each kind of claim against.

If the source itself is disputed, we say so rather than silently change a number

When the evidence does not settle a question, the page says so. We do not present uncertainty as certainty, and we do not change a number to make a question look settled. When two organizations publish different estimates of the same thing, we do not merge them into one number.

The log on this page lists every material correction, newest first.

Substantive corrections are noted on the page, not overwritten

A material correction changes:

  • a statistic
  • a health, testing or mitigation recommendation
  • a code or legal requirement
  • the meaning of a substantive statement

Each one gets a dated note on the page that shows the original claim. For example:

This page previously described the 17.8% figure using the Version 1 wording of the 2024 survey, which referred to people. Version 1.1 states it as residential properties. The page now says properties. The percentage is unchanged.

Spelling, formatting, broken links, typography and clarifications that do not change meaning are fixed without a note. See what the dates on a page mean and what moves them.

Accurate, properly sourced information is not removed because a company, contractor or manufacturer objects to it. A business’s registry facts stay. On request, a provider page is reduced to a minimal listing, and an individual can have their name withdrawn. See how a listed business asks for a correction or a reduced listing.

Report an error

Filled in for you when you come from “See something wrong? Report it.”

Say it in your own words. You don’t need any expertise.
A link that shows the right information, if you have one.
Only if you’d like to hear back. We don’t add it to any list.
  1. /reports/contractor-coverage/2026/

    This edition left out 41 certified people that C-NRPP lists with no company name. We now list each one as a sole proprietor. The edition's figures stay as published, from the 2026-10-21 pull. On the 2026-11-03 pull, counting sole proprietors adds 8 mitigation offices and 36 measurement offices. Kenora gains its first mitigation office, and Colchester, Dufferin, Niagara, Renfrew and Kitimat-Stikine gain their first measurement office. 25,342 fewer people live more than 100 km from a mitigation office. The next edition counts sole proprietors. Previously: "Every business for hire with an active C-NRPP mitigation credential on the pull, and every person counted in the 2021 Census." Source: C-NRPP, Find a Professional directory, as pulled on 2026-11-03

  2. /guides/radon-buying-selling-home/

    RECA's 2025 article does not say a buyer can lower the offer, use a holdback released on a low result, or test within 90 days of possession. Its 90 days of possession is the time it gives for installing a system. We removed the paragraph, and the guide's holdback section now cites BCFSA only. Previously: "RECA says an Alberta buyer can lower the offer by the cost of mitigation. RECA also describes a holdback released on a low result, with the buyer testing within 90 days of possession." Source: Real Estate Council of Alberta, Raising Your Client's Radon Awareness (1 May 2025; RECA has removed it, archived copy of 20 January 2026)

  3. /data/radon-rules/

    Alberta's radon disclosure rule (RECA) no longer mentions an offer discount, a holdback, buyer testing within 90 days of possession or a 2019 relicensing change. RECA's 2025 article says none of these. The disclosure rule stays. The record now gives RECA's advice to agents: buyers should have a certified radon technician install any system within 90 days of possession. The rule also shows on Alberta place pages. Previously: "A test over 200 Bq/m³ is a material latent defect that must be disclosed unless a mitigation system goes in before listing. RECA suggests buyers discount the offer by the mitigation cost or use a holdback released on a low result, and test within 90 days of possession either way. Radon became part of relicensing requirements in 2019." Source: Real Estate Council of Alberta, Raising Your Client's Radon Awareness (1 May 2025; RECA has removed it, archived copy of 20 January 2026)