HARDYSTON TWP MUA
PWS ID: NJ1911005 · HARDYSTON TWP, New Jersey 07419
HARDYSTON TWP MUA serves 769 people in HARDYSTON TWP, New Jersey using Groundwater water sources. It has 162 recorded EPA violations, including 8 health-based violations. No PFAS contamination was detected in UCMR5 testing.
Water Quality Snapshot: HARDYSTON TWP MUA
HARDYSTON TWP MUA is a local-owned community water system that delivers drinking water to 769 residents in HARDYSTON TWP, New Jersey (Sussex County) through 289 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 162 total violations for this system , of which 8 (5%) are health-based — meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 137 monitoring and reporting violations are on file. The most recent violation on record dates to 2025.
The most frequently cited contaminant at this system is Coliform (TCR), recorded in 83 violations (MR). This system has not yet been sampled under EPA's UCMR5 PFAS monitoring program, so no PFAS detection data is available here.
Across New Jersey, EPA tracks 3,428 public water systems serving 9,570,926 people, with 204,988 cumulative violations and 22,229 health-based violations on record. About 95% of systems in the state carry at least one violation, and state-wide the average per system is 59.8 violations. HARDYSTON TWP MUA's 162 violations sit above the New Jersey average. Statewide, 208 of 264 UCMR5-tested systems have reported PFAS detections (78.8%). All figures above are sourced directly from EPA SDWIS and UCMR5 public data releases and are updated as EPA publishes new reporting cycles.
System Details
- System Type
- Community
- Owner Type
- Local
- Connections
- 289
- County
- Sussex
- School/Daycare
- No
- MCL Violations
- 0
- Monitoring Violations
- 137
- Treatment Tech Violations
- 8
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Coliform (TCR) | MR | 83 | 2007 |
| Lead and Copper Rule | MR | 21 | 2025 |
| Consumer Confidence Rule | Other | 6 | 2025 |
| Chlorine | MR | 4 | 2019 |
| Lead and Copper Rule | TT | 4 | 2025 |
| Groundwater Rule | TT | 4 | 2021 |
| Public Notice | Other | 3 | 2005 |
| Fluoride | MR | 1 | 1988 |
| Cadmium | MR | 1 | 1988 |
| Barium | MR | 1 | 1988 |
| 1,2,4-Trichlorobenzene | MR | 1 | 2004 |
| Xylenes, Total | MR | 1 | 2004 |
| DICHLOROMETHANE | MR | 1 | 2004 |
| o-Dichlorobenzene | MR | 1 | 2004 |
| p-Dichlorobenzene | MR | 1 | 2004 |
| trans-1,2-Dichloroethylene | MR | 1 | 2004 |
| 1,2-Dichloroethane | MR | 1 | 2004 |
| 1,1,1-Trichloroethane | MR | 1 | 2004 |
| Carbon tetrachloride | MR | 1 | 2004 |
| 1,2-Dichloropropane | MR | 1 | 2004 |
| 1,1,2-Trichloroethane | MR | 1 | 2004 |
| Tetrachloroethylene | MR | 1 | 2004 |
| CHLOROBENZENE | MR | 1 | 2004 |
| Toluene | MR | 1 | 2004 |
| Ethylbenzene | MR | 1 | 2004 |
| Styrene | MR | 1 | 2004 |
| Selenium | MR | 1 | 1988 |
| Mercury | MR | 1 | 1988 |
| Benzene | MR | 1 | 2004 |
| cis-1,2-Dichloroethylene | MR | 1 | 2004 |
Verify This Water System
The figures above are aggregated from EPA's public databases. To verify the underlying records — or to file a complaint, request a Consumer Confidence Report, or check current monitoring status — go directly to the federal and state regulators that enforce the Safe Drinking Water Act for HARDYSTON TWP MUA.
EPA SDWIS — Federal Reports
EPA's Safe Drinking Water Information System (SDWIS) holds the federal compliance record for every regulated public water system. Open the system-level report by PWS ID:
View PWS ID NJ1911005 on SDWISSource: EPA SDWIS Federal Reports Search
New Jersey Drinking Water Authority
NJ DEP — Bureau of Safe Drinking Water is the primacy agency that licenses and inspects HARDYSTON TWP MUA under EPA-delegated authority.
Open NJ regulator portalViolation Timeline
Each row links to the EPA SDWIS public record for verification. Cross-reference the contaminant code on EPA's federal report to see violation dates, return-to-compliance status, and enforcement actions.
| Year (latest) | Contaminant | Category | Count | EPA Record |
|---|---|---|---|---|
| 2025 | Lead and Copper Rule | MR | 21 | SDWIS / NJ1911005 / 5000 |
| 2025 | Consumer Confidence Rule | Other | 6 | SDWIS / NJ1911005 / 7000 |
| 2025 | Lead and Copper Rule | TT | 4 | SDWIS / NJ1911005 / 5000 |
| 2021 | Groundwater Rule | TT | 4 | SDWIS / NJ1911005 / 0700 |
| 2019 | Chlorine | MR | 4 | SDWIS / NJ1911005 / 0999 |
| 2007 | Coliform (TCR) | MR | 83 | SDWIS / NJ1911005 / 3100 |
| 2005 | Public Notice | Other | 3 | SDWIS / NJ1911005 / 7500 |
| 2004 | 1,2,4-Trichlorobenzene | MR | 1 | SDWIS / NJ1911005 / 2378 |
| 2004 | Xylenes, Total | MR | 1 | SDWIS / NJ1911005 / 2955 |
| 2004 | DICHLOROMETHANE | MR | 1 | SDWIS / NJ1911005 / 2964 |
| 2004 | o-Dichlorobenzene | MR | 1 | SDWIS / NJ1911005 / 2968 |
| 2004 | p-Dichlorobenzene | MR | 1 | SDWIS / NJ1911005 / 2969 |
| 2004 | trans-1,2-Dichloroethylene | MR | 1 | SDWIS / NJ1911005 / 2979 |
| 2004 | 1,2-Dichloroethane | MR | 1 | SDWIS / NJ1911005 / 2980 |
| 2004 | 1,1,1-Trichloroethane | MR | 1 | SDWIS / NJ1911005 / 2981 |
How HARDYSTON TWP MUA Compares
Cross-reference this system's record against state averages and the federal MCL framework for context.
| Metric | HARDYSTON TWP MUA | New Jersey avg | Federal benchmark |
|---|---|---|---|
| Total violations | 162 | 59.8 | SDWA compliance — any non-zero count is a recorded breach |
| Health-based violations | 8 | 6.5 | Indicates a contaminant exceeded a federal MCL |
| PFAS detection | None | 78.8% | EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt |
| Population served | 769 | 2,792 | Sizing context for compliance burden |
Sources: EPA SDWIS and EPA National Primary Drinking Water Regulations (40 CFR Part 141). State averages computed across 3,428 regulated public water systems in New Jersey.
Federal MCL reference — Safe Drinking Water Act thresholds ▼
| Contaminant | Federal MCL / Action Level | Note |
|---|---|---|
| Lead | 0 mg/L (Action Level: 0.015 mg/L) | Lead and Copper Rule treatment technique |
| Arsenic | 0.010 mg/L (10 ppb) | Health-based MCL since 2006 |
| Total Coliform | Treatment technique (RTCR) | Indicator organism, monitoring trigger |
| PFOA / PFOS (PFAS) | 4.0 ppt each (final 2024 rule) | Compliance deadline 2029 |
| Nitrate (as N) | 10 mg/L | Acute health risk for infants |
Frequently Asked Questions
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Related Data for New Jersey
Read our methodology — how this data is sourced, computed, and verified.