Certified radon testing companies in Passaic County, NJ

✓ 1 company based in Passaic County, from the NJDEP Radon Certification Program (retrieved 2026-07-17). Companies based in neighboring counties often serve here too — see the full New Jersey list.

Radon note for Passaic County: 2 municipalities here are NJDEP Tier 1 (high radon potential). Testing is the only way to know your home's level — see your town's published test data:

Pompton Lakes Borough
2688 homes tested · 25% ≥ 4 pCi/L
West Milford Township
7244 homes tested · 28% ≥ 4 pCi/L

Company	Location	Certifications	License #
Obar Systems Inc.	Newfoundland, NJ	mitigation	MIB90013

FAQs

How many certified radon testing companies are in Passaic County?

1 company in the NJDEP Radon Certification Program is based in Passaic County as of 2026-07-17. Companies based elsewhere in New Jersey also commonly serve the county.

Which Passaic County towns have high radon potential?

NJDEP designates 2 Passaic County municipalities as Tier 1 (high radon potential): Pompton Lakes Borough, West Milford Township.

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