Radon in Arkansas Well Water

EPA Data 2025 · Risk Level: High

Avg Level

163.708 pCi/L

EPA Limit

300 pCi/L

% Above Limit

16.3%

Risk Level

high

Live DataLast updated: April 4, 2026·Source: EPA SDWIS & USGS

Water Quality Details

Contaminant	Radon
Category	radiological
Average Level	163.708 pCi/L
Maximum Level	419.702 pCi/L
EPA Limit (MCL)	300 pCi/L
% Wells Above Limit	16.3%
Affected Wells	50,530
Testing Cost	$88
Treatment Cost	$3,526
vs National Avg	+25.666 pCi/L (+18.6%)

Arkansas Well Water Overview

Well Users

310,000

% on Well Water

15.8%

Quality Score

62/100

Highest Risk States for Radon

#1Kentucky17.2% above limit #2Arkansas16.3% above limit #3Louisiana15.6% above limit #4South Dakota14.4% above limit #5Georgia14.3% above limit

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EPA SDWIS & USGS

📊

WellWaterPeek Research TeamData Specialists

Our team analyzes data from EPA SDWIS & USGS to deliver accurate, up-to-date information. All data is verified and cross-referenced with official sources.

✓ EPA SDWIS & USGS✓ Updated 2025

Frequently Asked Questions

Is radon a problem in Arkansas well water?

In Arkansas, radon levels average 163.708 pCi/L, with a maximum recorded level of 419.702 pCi/L. The EPA limit is 300 pCi/L. Currently 16.3% of tested wells exceed this limit, affecting approximately 50,530 wells.

How much does it cost to test for radon in Arkansas?

Testing for radon in Arkansas typically costs around $88. If treatment is needed, water treatment systems for radon cost approximately $3,526.

What is the risk level of radon in Arkansas well water?

The risk level for radon in Arkansas is rated as high. The state average of 163.708 pCi/L is 18.6% above the national average of 138.042 pCi/L.

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