Mercury in West Virginia Well Water

EPA Data 2025 · Risk Level: Low

Avg Level

0.342 ppb

EPA Limit

2 ppb

% Above Limit

5.5%

Risk Level

low

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

Water Quality Details

Contaminant	Mercury
Category	metal
Average Level	0.342 ppb
Maximum Level	1.268 ppb
EPA Limit (MCL)	2 ppb
% Wells Above Limit	5.5%
Affected Wells	15,400
Testing Cost	$101
Treatment Cost	$2,591
vs National Avg	-0.581 ppb (-62.9%)

West Virginia Well Water Overview

Well Users

280,000

% on Well Water

25.8%

Quality Score

58/100

Highest Risk States for Mercury

#1Kentucky18.2% above limit #2Arkansas17.3% above limit #3New Mexico17.3% above limit #4Michigan15.8% above limit #5Minnesota14.3% 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 mercury a problem in West Virginia well water?

In West Virginia, mercury levels average 0.342 ppb, with a maximum recorded level of 1.268 ppb. The EPA limit is 2 ppb. Currently 5.5% of tested wells exceed this limit, affecting approximately 15,400 wells.

How much does it cost to test for mercury in West Virginia?

Testing for mercury in West Virginia typically costs around $101. If treatment is needed, water treatment systems for mercury cost approximately $2,591.

What is the risk level of mercury in West Virginia well water?

The risk level for mercury in West Virginia is rated as low. The state average of 0.342 ppb is 62.9% below the national average of 0.923 ppb.

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