Arsenic in Michigan Well Water

EPA Data 2025 · Risk Level: Low

Avg Level

6.557 ppb

EPA Limit

10 ppb

% Above Limit

8.0%

Risk Level

low

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

Water Quality Details

Contaminant	Arsenic
Category	chemical
Average Level	6.557 ppb
Maximum Level	32.777 ppb
EPA Limit (MCL)	10 ppb
% Wells Above Limit	8.0%
Affected Wells	88,000
Testing Cost	$109
Treatment Cost	$2,373
vs National Avg	+2.314 ppb (+54.5%)

Michigan Well Water Overview

Well Users

1,100,000

% on Well Water

21.5%

Quality Score

68/100

Highest Risk States for Arsenic

#1Iowa17.4% above limit #2Georgia15.8% above limit #3Missouri15.8% above limit #4Alabama15.4% above limit #5Colorado14.0% 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 arsenic a problem in Michigan well water?

In Michigan, arsenic levels average 6.557 ppb, with a maximum recorded level of 32.777 ppb. The EPA limit is 10 ppb. Currently 8.0% of tested wells exceed this limit, affecting approximately 88,000 wells.

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

Testing for arsenic in Michigan typically costs around $109. If treatment is needed, water treatment systems for arsenic cost approximately $2,373.

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

The risk level for arsenic in Michigan is rated as low. The state average of 6.557 ppb is 54.5% above the national average of 4.243 ppb.

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