Arsenic in New Jersey Drinking Water — 24 ZIPs Tested
EPA data analysis for arsenic in New Jersey drinking water systems
Arsenic Contamination in New Jersey
ZipCheckup analyzed drinking water data across 726 ZIP codes in New Jersey for arsenic contamination. 24 ZIP codes have reported arsenic detections, and 16 have EPA violations on record.
The violation rate for arsenic in New Jersey is 2.2% of all ZIP codes — roughly in line with the national average.
EPA Standard for Arsenic
The EPA maximum contaminant level (MCL) for arsenic is 10 ppb, governed by the Arsenic Rule (2006). Water systems that exceed this limit must take corrective action and notify consumers.
Worst ZIP Codes for Arsenic in New Jersey
These ZIP codes reported the highest arsenic levels in New Jersey based on CCR reports and EPA data:
Lowest Arsenic Levels in New Jersey
These ZIP codes had the lowest reported arsenic detections in New Jersey:
Health Effects of Arsenic
Long-term exposure to arsenic in drinking water increases the risk of skin, bladder, lung, and kidney cancer. It also causes cardiovascular disease, diabetes, and skin lesions. The EPA classifies arsenic as a Group A human carcinogen.
How to Remove Arsenic From Drinking Water
The most effective treatment for arsenic removal is Reverse Osmosis. Look for filters certified under NSF 53 / NSF 58 standards.
Check Your ZIP Code
Use the ZipCheckup water quality search to see arsenic data for your specific water system in New Jersey.
Worst ZIP Codes for Arsenic in New Jersey
Ranked by highest arsenic detection level.
| Rank | ZIP Code | City | Level Detected | EPA Limit | Status |
|---|---|---|---|---|---|
| 1 | 07017 | East Orange | 650 ppb | 5 ppb | Exceeds |
| 2 | 07018 | East Orange | 650 ppb | 5 ppb | Exceeds |
| 3 | 07019 | East Orange | 650 ppb | 5 ppb | Exceeds |
| 4 | 07034 | Lake Hiawatha | 570 ppb | 5 ppb | Exceeds |
| 5 | 07045 | Montville | 570 ppb | 5 ppb | Exceeds |
| 6 | 07058 | Pine Brook | 570 ppb | 5 ppb | Exceeds |
| 7 | 07082 | Towaco | 570 ppb | 5 ppb | Exceeds |
| 8 | 07801 | Dover | 500 ppb | 5 ppb | Exceeds |
| 9 | 07802 | Dover | 500 ppb | 5 ppb | Exceeds |
| 10 | 07806 | Picatinny Arsenal | 500 ppb | 5 ppb | Exceeds |
| 11 | 07869 | Randolph | 500 ppb | 5 ppb | Exceeds |
| 12 | 07999 | Whippany | 500 ppb | 5 ppb | Exceeds |
| 13 | 07927 | Cedar Knolls | 500 ppb | 5 ppb | Exceeds |
| 14 | 07950 | Morris Plains | 500 ppb | 5 ppb | Exceeds |
| 15 | 07976 | New Vernon | 500 ppb | 5 ppb | Exceeds |
| 16 | 07981 | Whippany | 500 ppb | 5 ppb | Exceeds |
| 17 | 08202 | Avalon | 6 ppb | 10 ppb | Within Limit |
| 18 | 07423 | Ho Ho Kus | 2.64 PPB | 5 PPB | Within Limit |
| 19 | 07432 | Midland Park | 2.64 PPB | 5 PPB | Within Limit |
| 20 | 07450 | Ridgewood | 2.64 PPB | 5 PPB | Within Limit |
Lowest Arsenic Levels in New Jersey
Cities with Arsenic Data in New Jersey
18 cities in New Jersey have arsenic testing data available.