MAHWAH WATER DEPARTMENT
PWSID: NJ0233001 · Mahwah, NJ · Serves 26,777 people
According to EPA Safe Drinking Water Information System (SDWIS), MAHWAH WATER DEPARTMENT (PWSID NJ0233001) in Mahwah, NJ is listed as a CWS water system covering about 26,777 people. The same extract lists 1 health-based violation record spanning 2025-2025. Those 1 health-based row for MAHWAH WATER DEPARTMENT cover contaminants such as Lead and Copper Rule; they remain historical EPA registry entries, not a current compliance or drinkability score.
MAHWAH WATER DEPARTMENT has 1 health-based violation record in this historical extract. Monitoring and reporting records are not included.
PlainEnviro's health-based SDWIS extract covers monitoring and reporting violations only -- it does not include unresolved enforcement actions in progress or corrective steps a utility has taken since the extract date. 1 distinct EPA contaminant code appears in this system's record, including Lead and Copper Rule. Recorded violations span 2025–2025. Day-to-day primacy enforcement for this system runs through the New Jersey drinking-water program, not EPA directly.
A historical health-based record does not necessarily describe current water quality or compliance. The most authoritative current source is the utility's annual Consumer Confidence Report. For enforcement history and corrective-action orders, consult EPA ECHO and the New Jersey state drinking-water program's public portal.
System Details
- EPA ID (PWSID)
- NJ0233001
- System Type
- CWS
- Water Source
- Surface Water
- Location
- Mahwah, NJ
- Population Served
- 26,777
- Health Violations
- Yes (1)
What contaminants are in this water system?
| Contaminant | Violations | Health-Based |
|---|---|---|
| Lead and Copper Rule | 1 | 1 |
Violation History (1)
| Contaminant | Health | Date |
|---|---|---|
| Lead and Copper Rule | Yes | Jan 1, 2025 |
Frequently Asked Questions
What does EPA SDWIS list for MAHWAH WATER DEPARTMENT?
How many people does MAHWAH WATER DEPARTMENT serve?
What violations does MAHWAH WATER DEPARTMENT have?
What contaminants have been found in MAHWAH WATER DEPARTMENT water?
Compare beyond New Jersey
Nationwide peers by violations & population served
Cross-state SDWIS systems nearest MAHWAH WATER DEPARTMENT on cumulative violation count (1) and EPA-reported population served (26,777). Violation-count peers include CHOCTAW - CONEHATTA, CHOCTAW - PEARL RIVER, CHOCTAW - TUCKER. Population peers include SOUTHWEST MICHIGAN REGIONAL SANITARY SEW, CITRUS SPRINGS - PINE RIDGE, PRESTONSBURG CITY UTILITIES.
Similar violation count
Nearest cross-state community systems (500+ served) by SDWIS violations on record.
Similar population served
Nearest cross-state systems by EPA SDWIS population_served (same 500+ gate).
Nearby Water Systems
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About This Data
MAHWAH WATER DEPARTMENT (NJ0233001) is drawn from EPA SDWIS. Nearby county systems in this extract include VEOLIA WATER NEW JERSEY HACKENSACK; RIDGEWOOD WATER; FAIR LAWN WATER DEPT; GARFIELD WATER DEPARTMENT. Health-based rows (1 MCL/TT) are historical registry state, not a current drinkability score.
Source: U.S. Environmental Protection Agency, SDWIS Federal Reporting Services
Read our methodology - how this data is sourced, computed, and verified.