§ 4.1 — New Lenox, IL
This page lists 5 people and firms with a current radon testing credential whose official record names New Lenox, IL. Each row shows the credential number, the issuing body, and its own verification date. The latest record check on this page was August 29, 2026; other records may have been checked earlier. Source: IL IEMA. Verify the number before you hire.
Testing listings are people credentialed to measure radon. Mitigation listings are people credentialed to install a reduction system. Some people appear on both pages when the official file says they hold both.
current IL IEMA № RNI20253285
current IL IEMA № RNIT20253239
current IL IEMA № RNIT20242634
current IL IEMA № RNIT20253065
current IL IEMA № RNIT20242877
This is an independent credential directory. Records are listed alphabetically by the credential holder’s name. Several people can work for the same company; the number of records is not a count of competing businesses.
The company name on all 5 records is Precision Environmental Services. Confirm availability and the person responsible for your work directly with the provider.
Before booking, tell the provider whether this is a routine home check or part of a property transaction. Ask about the measurement method, preparation, device placement, pickup and written report. Confirm the full timeline before agreeing to an inspection deadline.
Will County Health Department radon program: Will County Health Department provides home test-kit information and lists its pickup offices, including Joliet. Check current availability directly. A home test kit and hiring a professional are different options; confirm which fits your transaction or testing requirements.
City names come from the official credential record. Confirm that the provider works at your address; a city listing does not establish a service area.
Plan the testing timeline · Maintaining an existing system · Browse the state directory
Appendix A
Open the source link on this page and match the name and credential number to IL IEMA. Status can change after a record’s verification date. The latest record check on this page was August 29, 2026; check each record’s date. If the official page disagrees with this directory, trust the official page. We do not invent credential numbers.
The U.S. EPA does not certify radon contractors. EPA publishes guidance on finding a qualified radon service provider and points to state programs and national certifications. This directory is not affiliated with EPA. We do not display EPA-certified badges.
Last verified on an individual record is the date we checked its official source. The latest credential check on this page was August 29, 2026; other records may have earlier dates. We refresh the roster monthly. Current means the person appeared as currently credentialed on the source at that record’s verification date. Credentials can expire between refreshes, so follow the source link.
Appendix A.2
The full checklist: Certified radon tester: what they do and how to hire one
§ 4.3
Illinois IEMA licenses radon measurement and mitigation professionals and technicians. The people below appear on the active licensee listing we imported. Read the methodology. Credential status can change.