1 credentialed Kansas radon professional serving Newton, sourced from the Kansas KDHE credential rosters and cross-checked against each company's own site. Filter by what you actually need — a mitigation install, a test, or both.
Credential check: every Newton-based contractor below is on a Kansas KDHE radon roster (number and roster date on each card). That means they're allowed to do the work, not that they do it well. Check a Kansas license yourself →
Yes. Since 2011, everyone performing radon testing or mitigation in Kansas must be certified by KDHE. Measurement certifications start KS-MS- and mitigation certifications start KS-MI-.
Source: KDHE, Radon laws. Checked 2026-11-05.What radon level should I act on?
EPA recommends fixing a home at 4 pCi/L or higher and suggests considering a fix between 2 and 4 pCi/L. What your test number means →