Entry № RTB00136

Mario Fonseca Environmental Inspections

Name: Mario Fonseca Environmental Inspections
Address: Johnston, RI, US
Telephone: (401) 529-0928

Last verified August 29, 2026. Methodology

Compare every credential-verified provider: Radon testing in Johnston, RI.

Credential number: RTB00136
Credential body: RI RIDOH
Status: current Licensed. Current in the source file.
Services: testing
City: Johnston
County: Not on the source file
State: Rhode Island
Phone: (401) 529-0928
Source: https://datahealth.ri.gov/find/radon/

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

testing in Johnston, RI

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