Is radon high in Passaic County, New Jersey?

Low. The model predicts a long-term basement average of 1.2 pCi/L in Passaic County (about 33% below the US average of 1.8 and close to the New Jersey average of 1.3). That is below the EPA's 2 pCi/L "consider fixing" threshold, though individual homes still vary. Ranked 17 of 21 New Jersey counties.

Should I test for radon in Passaic County?

Yes, once. The EPA recommends testing every home regardless of area, and the model's ZIP-level predictions in Passaic County already range from 0.7 to 2.5 pCi/L. A short-term kit costs little and settles the question for your house.

What does EPA Radon Zone 2 mean for Passaic County?

Zone 2 - moderate potential (2-4 pCi/L). The zone map dates from 1993 and classifies whole counties. The newer model's predicted average of 1.2 pCi/L does not line up with Zone 2, which is common - the EPA itself says high-radon homes exist in every zone. Neither replaces a test of your own home.

How much does radon mitigation cost in Passaic County?

A standard active sub-slab depressurization system typically runs $800-$2,500 installed nationally; New Jersey quotes vary with foundation type (slab, crawlspace, basement), home size and local labor. Get two or three bids from certified mitigators listed by your state radon program or the EPA's find-a-professional page.

Radon levels in Passaic County, New Jersey

LowEPA Zone 2

Predicted long-term basement average of 1.2 pCi/L (model estimate) across 27 ZIP codes - about 33% below the US average of 1.8, close to the New Jersey average of 1.3. Ranked #17 of 21 New Jersey counties.

Test Passaic County, NJ once anyway - radon varies house to house

The predicted basement average here is 1.2 pCi/L, below the EPA's 2 pCi/L "consider fixing" threshold. That's good news for the area - but the EPA still recommends every home be tested, because foundation cracks, soil pockets and ventilation make one house very different from its neighbor. One inexpensive kit settles it.

Get a short-term test kit →Or track it with a continuous monitor

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Predicted (model estimate). The pCi/L figures on this page are long-term area averages from a peer-reviewed national model built on millions of real radon tests (2001-2021). They describe the typical home in this area - not your home, which can be several times higher or lower. The EPA radon zone is a separate, 1993 county-level classification. How the numbers work.

1.2 ± 0.06

pCi/L predicted basement mean (model SD)

0.7 ± 0.07

pCi/L predicted upstairs (above-ground) mean

0.7-2.5

range of ZIP-level basement predictions in the county

What this means for Passaic

The typical Passaic County home is predicted below 2 pCi/L, the lowest band. That is the best case an area can show - but it describes the average house, and the ZIP-level predictions within the county still span 0.7 to 2.5 pCi/L.

Note that the EPA classifies Passaic County as Zone 2 while the newer model predicts 1.2 pCi/L. The zone map predates two decades of test data; where they disagree, we grade on the model but show both. County figures weight each ZIP by its 2010 Census population, so they describe where people live rather than empty land.

Comparable New Jersey counties: Ocean County (1.2), Bergen County (1.2), Atlantic County (1.2), Union County (1.3). The state's highest is Warren County at 2.3 pCi/L.

ZIP codes in Passaic County

Predicted basement and upstairs means by ZIP (model estimate). ZIPs whose land is mostly in this county.

ZIP	Basement	Upstairs	Grade
07055	1.0 ± 0.06	0.5	Low
07470	1.4 ± 0.05	0.7	Low
07011	0.8 ± 0.07	0.6	Low
07501	1.0 ± 0.06	0.6	Low
07013	1.3 ± 0.05	0.6	Low
07424	1.3 ± 0.05	0.7	Low
07508	1.3 ± 0.05	0.7	Low
07522	1.0 ± 0.08	0.6	Low
07506	1.1 ± 0.06	0.7	Low
07503	1.1 ± 0.07	0.6	Low
07514	1.0 ± 0.05	0.5	Low
07480	2.2 ± 0.05	1.6	Moderate
07502	1.1 ± 0.07	0.7	Low
07504	1.0 ± 0.08	0.6	Low
07524	0.7 ± 0.08	0.5	Low
07456	2.0 ± 0.06	1.3	Low
07012	1.2 ± 0.05	0.7	Low
07513	0.8 ± 0.07	0.5	Low
07442	1.4 ± 0.06	0.7	Low
07512	1.3 ± 0.05	0.7	Low
07403	2.0 ± 0.06	1.3	Moderate
07421	2.4 ± 0.06	1.7	Moderate
07465	1.8 ± 0.05	1.3	Low
07014	1.3 ± 0.05	0.7	Low
07420	1.7 ± 0.05	1.2	Low
07435	2.5 ± 0.06	1.7	Moderate
07505	1.0 ± 0.07	0.6	Low

If your test comes back at 4 pCi/L or higher

Mitigation is a routine job: a fan-driven pipe that vents soil gas from under the slab to above the roofline, typically $800-$2,500 installed (typical range; local quotes vary). Use certified professionals: EPA find-a-professional. Read the full mitigation guide.

Passaic County radon questions

Is radon high in Passaic County, New Jersey?: Low. The model predicts a long-term basement average of 1.2 pCi/L in Passaic County (about 33% below the US average of 1.8 and close to the New Jersey average of 1.3). That is below the EPA's 2 pCi/L "consider fixing" threshold, though individual homes still vary. Ranked 17 of 21 New Jersey counties.
Should I test for radon in Passaic County?: Yes, once. The EPA recommends testing every home regardless of area, and the model's ZIP-level predictions in Passaic County already range from 0.7 to 2.5 pCi/L. A short-term kit costs little and settles the question for your house.
What does EPA Radon Zone 2 mean for Passaic County?: Zone 2 - moderate potential (2-4 pCi/L). The zone map dates from 1993 and classifies whole counties. The newer model's predicted average of 1.2 pCi/L does not line up with Zone 2, which is common - the EPA itself says high-radon homes exist in every zone. Neither replaces a test of your own home.
How much does radon mitigation cost in Passaic County?: A standard active sub-slab depressurization system typically runs $800-$2,500 installed nationally; New Jersey quotes vary with foundation type (slab, crawlspace, basement), home size and local labor. Get two or three bids from certified mitigators listed by your state radon program or the EPA's find-a-professional page.

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