Is radon high in Collier County, Florida?

Low. The model predicts a long-term basement average of 1.3 pCi/L in Collier County (about 27% below the US average of 1.8 and close to the Florida average of 1.3). That is below the EPA's 2 pCi/L "consider fixing" threshold, though individual homes still vary. Ranked 31 of 67 Florida counties.

Should I test for radon in Collier County?

Yes, once. The EPA recommends testing every home regardless of area, and the model's ZIP-level predictions in Collier County already range from 1.1 to 1.5 pCi/L. A short-term kit costs little and settles the question for your house.

What does EPA Radon Zone 3 mean for Collier County?

Zone 3 - low potential (< 2 pCi/L). The zone map dates from 1993 and classifies whole counties. The 2001-2021 model agrees with the zone here. Neither replaces a test of your own home.

How much does radon mitigation cost in Collier County?

A standard active sub-slab depressurization system typically runs $800-$2,500 installed nationally; Florida 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 Collier County, Florida

LowEPA Zone 3

Predicted long-term basement average of 1.3 pCi/L (model estimate) across 19 ZIP codes - about 27% below the US average of 1.8, close to the Florida average of 1.3. Ranked #31 of 67 Florida counties.

Test Collier County, FL once anyway - radon varies house to house

The predicted basement average here is 1.3 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.

1.3 ± 0.08

pCi/L predicted basement mean (model SD)

1.5 ± 0.11

pCi/L predicted upstairs (above-ground) mean

1.1-1.5

range of ZIP-level basement predictions in the county

What this means for Collier

The typical Collier 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 1.1 to 1.5 pCi/L.

The 1993 EPA zone (3) and the 2001-2021 model agree for Collier. County figures weight each ZIP by its 2010 Census population, so they describe where people live rather than empty land.

Comparable Florida counties: Manatee County (1.3), Polk County (1.3), Leon County (1.3), Flagler County (1.3). The state's highest is Jefferson County at 1.6 pCi/L.

ZIP codes in Collier County

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

ZIP	Basement	Upstairs	Grade
34116	1.2 ± 0.09	1.6	Low
34142	1.2 ± 0.08	1.1	Low
34112	1.3 ± 0.08	1.6	Low
34120	1.5 ± 0.07	1.6	Low
34119	1.4 ± 0.07	1.4	Low
34104	1.3 ± 0.09	2.1	Low
34109	1.3 ± 0.07	1.5	Low
34110	1.3 ± 0.08	1.5	Low
34113	1.4 ± 0.08	1.8	Low
34108	1.4 ± 0.07	1.6	Low
34145	1.2 ± 0.07	0.9	Low
34117	1.5 ± 0.06	1.5	Low
34105	1.4 ± 0.07	1.8	Low
34114	1.3 ± 0.07	1.5	Low
34103	1.3 ± 0.08	1.5	Low
34102	1.2 ± 0.07	1.3	Low
34139	1.2 ± 0.08	0.8	Low
34138	1.1 ± 0.07	0.8	Low
34141	1.2 ± 0.09	0.9	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.

Collier County radon questions

Is radon high in Collier County, Florida?: Low. The model predicts a long-term basement average of 1.3 pCi/L in Collier County (about 27% below the US average of 1.8 and close to the Florida average of 1.3). That is below the EPA's 2 pCi/L "consider fixing" threshold, though individual homes still vary. Ranked 31 of 67 Florida counties.
Should I test for radon in Collier County?: Yes, once. The EPA recommends testing every home regardless of area, and the model's ZIP-level predictions in Collier County already range from 1.1 to 1.5 pCi/L. A short-term kit costs little and settles the question for your house.
What does EPA Radon Zone 3 mean for Collier County?: Zone 3 - low potential (< 2 pCi/L). The zone map dates from 1993 and classifies whole counties. The 2001-2021 model agrees with the zone here. Neither replaces a test of your own home.
How much does radon mitigation cost in Collier County?: A standard active sub-slab depressurization system typically runs $800-$2,500 installed nationally; Florida 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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