Mercury in Michigan Well Water

EPA Data 2025 · Risk Level: High

Avg Level

1.585 ppb

EPA Limit

2 ppb

% Above Limit

15.8%

Risk Level

high

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

Water Quality Details

Contaminant	Mercury
Category	metal
Average Level	1.585 ppb
Maximum Level	4.214 ppb
EPA Limit (MCL)	2 ppb
% Wells Above Limit	15.8%
Affected Wells	173,800
Testing Cost	$59
Treatment Cost	$2,201
vs National Avg	+0.662 ppb (+71.7%)

Michigan Well Water Overview

Well Users

1,100,000

% on Well Water

21.5%

Quality Score

68/100

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 Michigan well water?

In Michigan, mercury levels average 1.585 ppb, with a maximum recorded level of 4.214 ppb. The EPA limit is 2 ppb. Currently 15.8% of tested wells exceed this limit, affecting approximately 173,800 wells.

How much does it cost to test for mercury in Michigan?

Testing for mercury in Michigan typically costs around $59. If treatment is needed, water treatment systems for mercury cost approximately $2,201.

What is the risk level of mercury in Michigan well water?

The risk level for mercury in Michigan is rated as high. The state average of 1.585 ppb is 71.7% above the national average of 0.923 ppb.

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