Entry № RNMT2019206

Johnson, Caleb

Name: Guardian Radon Mitigation
Address: Oswego, IL, US
Telephone: 630-768-9836

Guardian Radon Mitigation

Last verified August 29, 2026. Methodology

Compare every credential-verified provider: Radon mitigation in Oswego, IL.

Credential number: RNMT2019206
Credential body: IL IEMA
Status: current Licensed. Current in the source file.
Services: mitigation
City: Oswego
County: Not on the source file
State: Illinois
Phone: 630-768-9836
Source: https://public.iema.state.il.us/Radon/Home/LicenseIndex

Fig. 5 — Each pin is a current listing at the Census city or county centroid on the file, approximate. Pins that share a place are spread so you can click them. Not street addresses.

§ 5.1

Places on the source file

mitigation in Oswego, IL

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