MAHWAH WATER DEPARTMENT Water Quality Report
Population
26,777
people served
Water Source
🌊 Surface
rivers, lakes, reservoirs
National Rank
Top 90%
of 49,184 US systems
5-Year Record
⚠️ 1
violation recorded
C
Fair
Safety Grade
1 violation in the past 5 years, including 1 health-based
System Details
- PWSID
- NJ0233001
- Population Served
- 26,777
- Water Source
- Surface Water
- Owner
- Local Government
- State
- New Jersey
- EPA Region
- 2
Contaminants of Concern
| Contaminant | Status | Violations |
|---|---|---|
| Contaminant 7000 | ⚠ Monitoring/Reporting | 1 |
| Total Coliform | ⚠ Monitoring/Reporting | 1 |
| Contaminant 5000 | ✕ Health-Based | 5 |
Violation History
2025
1
2020
2
2019
1
2018
1
2012
1
2011
1
Total violations on record: 7
Service Area
Cities Served
ZIP Codes Served
Recommended Water Filters
Based on contaminants detected in this water system:
UV Water Purifier
Kills bacteria and viruses without chemicals
Removes: Total Coliform
How does this compare?
This systemNational average
Grade C
Avg: B-C
7violations total
25% of national average
National avg: ~28 per system
📍 Mid-to-large system — serves 4× the national average.