Washington Twp Mua-hager
EPA ID: NJ1438003 · 3,458 people served · 2 ZIP codes
Not yet resolved: 21 EPA violations at Washington Twp Mua-hager, affecting about 3,458 residents.
Data: EPA SDWIS Last verified: 2026-04-02
Compliance Trajectory
Worsening · Risk tier: High · 95% chance of violation in next 12 months
Violations went from 2 (2022) to 1 (2025). The pattern suggests growing compliance challenges.
Service Area Map
Coverage area for Washington Twp Mua-hager Source: EPA SDWIS service area boundaries.
Service area boundary — Grade F
Service Area Demographics
The Washington Twp Mua-hager serves a community with a median household income of $182,358 and an estimated 19,811 residents across its service area. Approximately 70% of housing stock was built before 1986, which increases the likelihood of lead service lines and older plumbing.
💧 Where Does Your Water Come From?
Washington Twp Mua-hager's water is pumped from underground aquifers. Groundwater is naturally filtered through rock and soil, but it can be vulnerable to PFAS contamination, nitrates from agriculture, and industrial chemicals that seep into the water table.
About 0% of homes in Hunterdon County, New Jersey rely on private wells rather than public water systems. Private well owners are responsible for their own water testing and treatment.
Superfund Proximity Note: This service area ranks in the 75th percentile nationally for proximity to Superfund (NPL) sites. Groundwater sources near contaminated sites may face elevated risk from industrial chemicals.
Infrastructure Risk
Detected Contaminants
How Washington Twp Mua-hager compares to EPA limits
What This Means For You
Stage 1 DBP Rule at 18 mg/L exceeds the EPA maximum of mg/L.
Consumer Confidence Report Rule at 17 mg/L exceeds the EPA maximum of mg/L.
Total Trihalomethanes (TTHM) at 1 mg/L exceeds the EPA maximum of 0.08 mg/L. Bladder & rectal cancer risk; reproductive concerns. Consider granular activated carbon (GAC) filtration.
Lead and Copper Rule at 7 mg/L exceeds the EPA maximum of mg/L.
Surface Water Treatment Rule at 5 mg/L exceeds the EPA maximum of mg/L.
PFAS Detected in Service Area
PFAS ("forever chemicals") have been detected in water serving this system's area. 8 detections recorded. 4 exceed federal EPA limits (4 ppt for PFOA/PFOS).
Total Trihalomethanes (TTHM) was detected in this water system. granular activated carbon (GAC) filtration can reduce exposure.
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Estimated Remediation Costs
Average estimated costs across ZIP codes served by this system
Based on national averages for common remediation projects. Actual costs vary by property. Only issues flagged by EPA, FEMA, or state data for each ZIP code are included.
System Overview
Washington Twp Mua-hager (EPA ID: NJ1438003) is a community water system in New Jersey that serves approximately 3,458 people from groundwater sources.
This system provides water to 2 ZIP codes across 2 communities.
Average Home Safety Score: F (35/100)
Based on water quality violations, lead levels, and radon risk across all ZIP codes served by this system.
Violation History
Recent Violations
| Date | Contaminant | Type | Status |
|---|---|---|---|
| September 11, 2025 | Consumer Confidence Report Rule | Monitoring | Unresolved |
| August 1, 2025 | Consumer Confidence Report Rule | Monitoring | Unresolved |
| April 1, 2025 | Stage 1 DBP Rule | Monitoring | Resolved |
| January 1, 2025 | Stage 1 DBP Rule | Monitoring | Resolved |
| January 1, 2025 | Stage 1 DBP Rule | Health-based | Unresolved |
| December 30, 2024 | Stage 1 DBP Rule | Monitoring | Unresolved |
| November 11, 2024 | Consumer Confidence Report Rule | Monitoring | Resolved |
| October 11, 2024 | Consumer Confidence Report Rule | Monitoring | Resolved |
| October 1, 2024 | Surface Water Treatment Rule | Monitoring | Resolved |
| October 1, 2024 | Consumer Confidence Report Rule | Monitoring | Resolved |
| September 11, 2024 | Consumer Confidence Report Rule | Monitoring | Resolved |
| September 1, 2024 | Consumer Confidence Report Rule | Monitoring | Resolved |
| August 22, 2024 | Consumer Confidence Report Rule | Monitoring | Resolved |
| August 1, 2024 | Consumer Confidence Report Rule | Monitoring | Resolved |
| July 11, 2024 | Consumer Confidence Report Rule | Monitoring | Resolved |
| July 1, 2024 | Stage 1 DBP Rule | Monitoring | Resolved |
| July 1, 2024 | Consumer Confidence Report Rule | Monitoring | Resolved |
| July 1, 2024 | Surface Water Treatment Rule | Monitoring | Resolved |
| July 1, 2024 | Stage 1 DBP Rule | Health-based | Unresolved |
Contaminants Detected
The following contaminants have been flagged in EPA records for this water system:
| Contaminant | Category | Violations | Health-Based |
|---|---|---|---|
| Stage 1 DBP Rule | Treatment Failure | 18 | Yes |
| Consumer Confidence Report Rule | Reporting Failure | 17 | No |
| Lead and Copper Rule | Treatment Failure | 7 | No |
| Surface Water Treatment Rule | Treatment Failure | 5 | No |
| Total Trihalomethanes (TTHM) | Disinfection Byproducts | 1 | No |
Lead & Copper
EPA Lead and Copper Rule sampling data for ZIP codes served by this system:
| ZIP Code | Lead Level | Exceeds Limit | Sample Date |
|---|---|---|---|
| 07830 | 0.0015 mg/L | No | N/A |
Radon Risk in Service Area
Dominant radon zone for ZIP codes served by this system: Zone 1 (High Risk)
The EPA recommends testing homes in Zone 1 and Zone 2 areas for radon.
Need help with your water quality?
Typical cost: Water test: typically $20–$50 (DIY kit) · Professional inspection: $150–$400
Find the Right Water FilterFree tip: Let cold water run for 2 minutes before drinking — this helps flush lead from your pipes.
ZIP Codes Served
Coverage: Service area ZIP codes sourced from EPA Community Water System Service Area Boundaries v3 (March 2026 release). These ZIPs reflect the actual deployment footprint recorded by NJ or modeled from parcel and building-footprint data.
Data Sources
This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View the full compliance record for Washington Twp Mua-hager (NJ1438003) on EPA.gov.
Frequently Asked Questions
Is Washington Twp Mua-hager water safe to drink?
Washington Twp Mua-hager has recorded 8 health-based violations in the past 5 years. While the system is required to treat water to meet federal standards, you may want to consider additional precautions such as a certified water filter.
How many people does Washington Twp Mua-hager serve?
Washington Twp Mua-hager serves approximately 3,458 people across 2 ZIP codes in New Jersey.
Where does Washington Twp Mua-hager get its water?
The primary water source is groundwater.
Federal UCMR5 PFAS Monitoring: Detected
This water system was tested under the federal EPA Unregulated Contaminant Monitoring Rule (UCMR5). PFAS compounds were detected below the current state-enforceable MCL.
Current MCL reflects the lowest state-enforceable limit (NYS 10 ppt for PFOA/PFOS, effective August 2020). The federal final MCL of 4 ppt for PFOA/PFOS (EPA April 2024 rule) is not enforceable until April 2029. Detections above 4 ppt but below 10 ppt are below current MCL but above the future federal limit.
Source: U.S. EPA UCMR5 (Unregulated Contaminant Monitoring Rule, 5th cycle) — per-system federal sampling, 2023–2025. EPA UCMR5 monitoring program →
Lead Service Line Inventory
Service line breakdown reported under the federal Lead and Copper Rule Improvements (LCRI) inventory requirement:
Federal LCRI rule (effective October 2024) requires every public water system to inventory its service lines and complete lead-line replacement within 10 years.
Source: NJDEP Public Community Water Purveyor SLI · Submitted 2024
ZipCheckup is not affiliated with the utility or state agency. Inventory figures render verbatim from the public LCRI submission cited above; ZipCheckup does not perform inspections or replacements.
Frequently Asked Questions
What You Can Do
Test your water
Home test kits can detect lead, bacteria, and other contaminants at your tap. Find the right filter →
Check your specific ZIP code
Water quality can vary within a system. View nearest ZIP report →
Contact your utility
Washington Twp Mua-hager (EPA ID: NJ1438003) — request the latest Consumer Confidence Report or ask about specific contaminants.