Arsenic in New Mexico Well Water

EPA Data 2025 · Risk Level: Minimal

Avg Level

7.635 ppb

EPA Limit

10 ppb

% Above Limit

1.4%

Risk Level

minimal

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

Water Quality Details

Contaminant	Arsenic
Category	chemical
Average Level	7.635 ppb
Maximum Level	31.365 ppb
EPA Limit (MCL)	10 ppb
% Wells Above Limit	1.4%
Affected Wells	3,920
Testing Cost	$143
Treatment Cost	$1,380
vs National Avg	+3.392 ppb (+79.9%)

New Mexico Well Water Overview

Well Users

280,000

% on Well Water

20.5%

Quality Score

64/100

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 New Mexico well water?

In New Mexico, arsenic levels average 7.635 ppb, with a maximum recorded level of 31.365 ppb. The EPA limit is 10 ppb. Currently 1.4% of tested wells exceed this limit, affecting approximately 3,920 wells.

How much does it cost to test for arsenic in New Mexico?

Testing for arsenic in New Mexico typically costs around $143. If treatment is needed, water treatment systems for arsenic cost approximately $1,380.

What is the risk level of arsenic in New Mexico well water?

The risk level for arsenic in New Mexico is rated as minimal. The state average of 7.635 ppb is 79.9% above the national average of 4.243 ppb.

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