Mountain Lakes Water Dep
EPA ID: NJ1425001 · 4,012 people served · 1 ZIP code
ZipCheckup's reading of EPA SDWIS for Mountain Lakes Water Dep (NJ1425001): 1 unresolved EPA violation on record. Compliance tracking for Mountain Lakes Water Dep shows 1 pending violation logged in the EPA system - the supplier delivers water to approximately 4,012 residents while those findings remain open.
Data: EPA SDWIS
Service Area Map
Coverage area for Mountain Lakes Water Dep Source: EPA SDWIS service area boundaries.
Service area boundary - Grade D
Service Area Demographics
The Mountain Lakes Water Dep serves a community with a median household income of $250,001 and an estimated 4,535 residents across its service area. Approximately 83% of housing stock was built before 1986, which increases the likelihood of lead service lines and older plumbing.
💧 Where Does Your Water Come From?
Mountain Lakes Water Dep'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.
Superfund Proximity Note: This service area ranks in the 80th 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 Mountain Lakes Water Dep compares to EPA limits
What This Means For You
Lead at 2 mg/L (action level) exceeds the EPA maximum of 0.015 mg/L (action level). Brain damage in children, kidney & blood pressure in adults. Consider reverse osmosis filtration.
Surface Water Treatment Rule at 4 mg/L exceeds the EPA maximum of mg/L.
Revised Total Coliform Rule at 3 presence exceeds the EPA maximum of presence.
Stage 1 DBP Rule at 1 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. 7 detections recorded. 2 exceed federal EPA limits (4 ppt for PFOA/PFOS).
Lead was detected in this water system. reverse osmosis filtration can reduce exposure.
Find a certified water filter →Comparable Water Systems
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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
Mountain Lakes Water Dep (EPA ID: NJ1425001) is a community water system in New Jersey that serves approximately 4,012 people from groundwater sources.
This system serves ZIP code 07046 in Mountain Lakes.
ZIP-Area Home Safety Context: D (47/100)
This is the average Home Safety Score for 1 of 1 service-area ZIP codes with all required score domains observed. It is not a grade for the water utility.
Model 4.0.0 uses SDWIS identity plus accepted ECHO SDWA lifecycle-based water compliance, the UCMR 5 PFAS MCL screen, EPA radon zone, and annual EPA AirData AQI across three equally weighted domains. Missing required evidence suppresses the score.
Violation History
Status breakdown for accepted records with record years 2021-2026: 6 resolved, 3 archived, 0 addressed, and 1 unaddressed. Under this source contract, current noncompliance is the sum of addressed and unaddressed records. Archived and resolved records are excluded from current noncompliance.
Recent Violations
| Date | Contaminant | Type | Status |
|---|---|---|---|
| December 30, 2025 | Stage 1 DBP Rule | Non-health-based | Resolved |
| August 1, 2025 | Revised Total Coliform Rule | Non-health-based | Resolved |
| July 1, 2025 | Revised Total Coliform Rule | Non-health-based | Archived |
| January 1, 2025 | Lead | Non-health-based | Archived |
| January 1, 2025 | Lead | Non-health-based | Archived |
| July 1, 2024 | Surface Water Treatment Rule | Non-health-based | Resolved |
| October 1, 2023 | Surface Water Treatment Rule | Non-health-based | Resolved |
| July 1, 2023 | Surface Water Treatment Rule | Non-health-based | Resolved |
| July 1, 2021 | Surface Water Treatment Rule | Non-health-based | Unaddressed (current) |
| April 1, 2021 | Revised Total Coliform Rule | Non-health-based | Resolved |
Contaminants Detected
The following contaminants have been flagged in EPA records for this water system:
| Contaminant | Category | Violations | Health-Based |
|---|---|---|---|
| Surface Water Treatment Rule | Treatment Failure | 4 | No |
| Revised Total Coliform Rule | Microbiological | 3 | No |
| Lead | Inorganic | 2 | No |
| Stage 1 DBP Rule | Treatment Failure | 1 | No |
Lead & Copper
EPA Lead and Copper Rule evidence attributed directly to this water system:
| Lead Level | Exceeds Action Level | Sample Date |
|---|---|---|
| 0.00253 mg/L | No | N/A |
No copper action-level exceedance record appears for this PWSID in the accepted LCR snapshot. This does not establish a clean copper measurement.
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.
- 07046 - Mountain Lakes
Data Sources
This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View the full compliance record for Mountain Lakes Water Dep (NJ1425001) on EPA.gov.
Frequently Asked Questions
Is Mountain Lakes Water Dep water safe to drink?
The accepted 2026Q2 ECHO snapshot shows 1 current noncompliance record and zero current records classified as health-based. That classification is not a property-specific water test or safety guarantee.
How many people does Mountain Lakes Water Dep serve?
Mountain Lakes Water Dep serves approximately 4,012 people across 1 ZIP code in New Jersey.
Where does Mountain Lakes Water Dep get its water?
The primary water source is groundwater.
Federal UCMR5 PFAS Monitoring: Above Current MCL
This water system was tested under the federal EPA Unregulated Contaminant Monitoring Rule (UCMR5). One or more PFAS compounds were measured above 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 →
Frequently Asked Questions
How to cite this page
ZipCheckup. (n.d.). Mountain Lakes Water Dep (NJ): 10 EPA Violations. https://zipcheckup.com/water-system/nj1425001/
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title = {{Mountain Lakes Water Dep (NJ): 10 EPA Violations}},
year = {n.d.},
url = {https://zipcheckup.com/water-system/nj1425001/}
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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
Mountain Lakes Water Dep (EPA ID: NJ1425001) - request the latest Consumer Confidence Report or ask about specific contaminants.