Nitrate in New Jersey Drinking Water — 60 ZIPs Tested
EPA data analysis for nitrate in New Jersey drinking water systems
Nitrate Contamination in New Jersey
ZipCheckup analyzed drinking water data across 726 ZIP codes in New Jersey for nitrate contamination. 60 ZIP codes have reported nitrate detections, and 57 have EPA violations on record.
The violation rate for nitrate in New Jersey is 7.9% of all ZIP codes — higher than the national average.
EPA Standard for Nitrate
The EPA maximum contaminant level (MCL) for nitrate is 10 mg/L (as nitrogen), governed by the National Primary Drinking Water Regulations. Water systems that exceed this limit must take corrective action and notify consumers.
Worst ZIP Codes for Nitrate in New Jersey
These ZIP codes reported the highest nitrate levels in New Jersey based on CCR reports and EPA data:
Lowest Nitrate Levels in New Jersey
These ZIP codes had the lowest reported nitrate detections in New Jersey:
Health Effects of Nitrate
How to Remove Nitrate From Drinking Water
The most effective treatment for nitrate removal is Reverse Osmosis or Ion Exchange. Look for filters certified under NSF 53 / NSF 58 standards.
Check Your ZIP Code
Use the ZipCheckup water quality search to see nitrate data for your specific water system in New Jersey.
Worst ZIP Codes for Nitrate in New Jersey
Ranked by highest nitrate detection level.
| Rank | ZIP Code | City | Level Detected | EPA Limit | Status |
|---|---|---|---|---|---|
| 1 | 07423 | Ho Ho Kus | 9.1 PPM | 10 PPM | Within Limit |
| 2 | 07432 | Midland Park | 9.1 PPM | 10 PPM | Within Limit |
| 3 | 07450 | Ridgewood | 9.1 PPM | 10 PPM | Within Limit |
| 4 | 07451 | Ridgewood | 9.1 PPM | 10 PPM | Within Limit |
| 5 | 07452 | Glen Rock | 9.1 PPM | 10 PPM | Within Limit |
| 6 | 07481 | Wyckoff | 9.1 PPM | 10 PPM | Within Limit |
| 7 | 07653 | Paramus | 9.1 PPM | 10 PPM | Within Limit |
| 8 | 07801 | Dover | 5.4 ppm | 10 ppm | Within Limit |
| 9 | 07802 | Dover | 5.4 ppm | 10 ppm | Within Limit |
| 10 | 07806 | Picatinny Arsenal | 5.4 ppm | 10 ppm | Within Limit |
| 11 | 07869 | Randolph | 5.4 ppm | 10 ppm | Within Limit |
| 12 | 07999 | Whippany | 5.4 ppm | 10 ppm | Within Limit |
| 13 | 07010 | Cliffside Park | 2.3 ppm | 10 ppm | Within Limit |
| 14 | 07020 | Edgewater | 2.3 ppm | 10 ppm | Within Limit |
| 15 | 07022 | Fairview | 2.3 ppm | 10 ppm | Within Limit |
| 16 | 07024 | Fort Lee | 2.3 ppm | 10 ppm | Within Limit |
| 17 | 07047 | North Bergen | 2.3 ppm | 10 ppm | Within Limit |
| 18 | 07070 | Rutherford | 2.3 ppm | 10 ppm | Within Limit |
| 19 | 07072 | Carlstadt | 2.3 ppm | 10 ppm | Within Limit |
| 20 | 07073 | East Rutherford | 2.3 ppm | 10 ppm | Within Limit |
Lowest Nitrate Levels in New Jersey
Cities with Nitrate Data in New Jersey
63 cities in New Jersey have nitrate testing data available.
+ 43 more cities