Arsenic in New Jersey Well Water

EPA Data 2025 · Risk Level: Moderate

Avg Level

5.755 ppb

EPA Limit

10 ppb

% Above Limit

10.3%

Risk Level

moderate

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

Water Quality Details

Contaminant	Arsenic
Category	chemical
Average Level	5.755 ppb
Maximum Level	20.707 ppb
EPA Limit (MCL)	10 ppb
% Wells Above Limit	10.3%
Affected Wells	39,140
Testing Cost	$32
Treatment Cost	$4,525
vs National Avg	+1.512 ppb (+35.6%)

New Jersey Well Water Overview

Well Users

380,000

% on Well Water

10.2%

Quality Score

73/100

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 Jersey well water?

In New Jersey, arsenic levels average 5.755 ppb, with a maximum recorded level of 20.707 ppb. The EPA limit is 10 ppb. Currently 10.3% of tested wells exceed this limit, affecting approximately 39,140 wells.

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

Testing for arsenic in New Jersey typically costs around $32. If treatment is needed, water treatment systems for arsenic cost approximately $4,525.

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

The risk level for arsenic in New Jersey is rated as moderate. The state average of 5.755 ppb is 35.6% above the national average of 4.243 ppb.

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