Is radon high in Caddo Parish, Louisiana?

Low. The model predicts a long-term basement average of 1.4 pCi/L in Caddo Parish (about 24% below the US average of 1.8 and close to the Louisiana average of 1.4). That is below the EPA's 2 pCi/L "consider fixing" threshold, though individual homes still vary. Ranked 52 of 64 Louisiana counties.

Should I test for radon in Caddo Parish?

Yes, once. The EPA recommends testing every home regardless of area, and the model's ZIP-level predictions in Caddo Parish already range from 1.1 to 1.6 pCi/L. A short-term kit costs little and settles the question for your house.

What does EPA Radon Zone 3 mean for Caddo Parish?

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 Caddo Parish?

A standard active sub-slab depressurization system typically runs $800-$2,500 installed nationally; Louisiana 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 Caddo Parish, Louisiana

LowEPA Zone 3

Predicted long-term basement average of 1.4 pCi/L (model estimate) across 23 ZIP codes - about 24% below the US average of 1.8, close to the Louisiana average of 1.4. Ranked #52 of 64 Louisiana counties.

Test Caddo Parish, LA once anyway - radon varies house to house

The predicted basement average here is 1.4 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.

1.4 ± 0.07

pCi/L predicted basement mean (model SD)

0.7 ± 0.09

pCi/L predicted upstairs (above-ground) mean

1.1-1.6

range of ZIP-level basement predictions in the county

What this means for Caddo Parish

The typical Caddo Parish 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 1.6 pCi/L.

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

Comparable Louisiana counties: St. John the Baptist Parish (1.4), St. Mary Parish (1.4), Concordia Parish (1.4), St. James Parish (1.4). The state's highest is Beauregard Parish at 1.6 pCi/L.

ZIP codes in Caddo Parish

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

ZIP	Basement	Upstairs	Grade
71106	1.5 ± 0.06	0.7	Low
71107	1.5 ± 0.06	0.8	Low
71118	1.4 ± 0.06	0.7	Low
71109	1.2 ± 0.07	0.7	Low
71105	1.4 ± 0.07	0.6	Low
71108	1.2 ± 0.07	0.6	Low
71104	1.3 ± 0.07	0.7	Low
71115	1.4 ± 0.07	0.6	Low
71129	1.4 ± 0.06	0.8	Low
71047	1.5 ± 0.07	0.8	Low
71119	1.6 ± 0.06	0.8	Low
71101	1.2 ± 0.07	0.7	Low
71103	1.2 ± 0.07	0.7	Low
71082	1.3 ± 0.06	0.7	Low
71033	1.5 ± 0.06	0.8	Low
71060	1.4 ± 0.07	0.7	Low
71061	1.4 ± 0.06	0.8	Low
71007	1.4 ± 0.07	0.8	Low
71069	1.4 ± 0.06	0.7	Low
71044	1.5 ± 0.07	0.7	Low
71004	1.5 ± 0.06	0.8	Low
71043	1.4 ± 0.07	0.7	Low
71029	1.4 ± 0.07	0.8	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.

Caddo Parish radon questions

Is radon high in Caddo Parish, Louisiana?: Low. The model predicts a long-term basement average of 1.4 pCi/L in Caddo Parish (about 24% below the US average of 1.8 and close to the Louisiana average of 1.4). That is below the EPA's 2 pCi/L "consider fixing" threshold, though individual homes still vary. Ranked 52 of 64 Louisiana counties.
Should I test for radon in Caddo Parish?: Yes, once. The EPA recommends testing every home regardless of area, and the model's ZIP-level predictions in Caddo Parish already range from 1.1 to 1.6 pCi/L. A short-term kit costs little and settles the question for your house.
What does EPA Radon Zone 3 mean for Caddo Parish?: 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 Caddo Parish?: A standard active sub-slab depressurization system typically runs $800-$2,500 installed nationally; Louisiana 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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