Sparta Twp Water Utility - Lake Mohawk
EPA ID: NJ1918004 · 17,625 people served · 2 ZIP codes
ZipCheckup's reading of EPA records for Sparta Twp Water Utility - Lake Mohawk (NJ1918004): 1 violation recorded with unresolved status in the SDWIS data used. Sparta Twp Water Utility - Lake Mohawk has 1 EPA violation listed as open in the reviewed federal record - approximately 17,625 people fall within its service area.
Data: EPA SDWIS
Service Area Map
Coverage area for Sparta Twp Water Utility - Lake Mohawk Source: EPA SDWIS service area boundaries.
Service area boundary
Demographics of ZIP Codes Served
The ZIP codes associated with Sparta Twp Water Utility - Lake Mohawk have a median household income of $156,272 and about 30,203 residents live in those ZIP codes (Census; not the number of people this system supplies). Approximately 72% of housing stock was built before 1986, which increases the likelihood of lead service lines and older plumbing.
💧 Where Does Your Water Come From?
Sparta Twp Water Utility - Lake Mohawk's water is classified in EPA records as a groundwater source. 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 70th percentile nationally for proximity to Superfund (NPL) sites. Groundwater sources near contaminated sites may face elevated risk from industrial chemicals.
Infrastructure Risk
PFAS in ZIP Codes This System Serves
PFAS ("forever chemicals") have been reported in samples from water systems associated with the ZIP codes in this system's area. These results can come from other water systems serving the same ZIP codes; check the UCMR5 section for any results reported for this system. 7 detections recorded. 2 detections are above the level of a federal PFAS MCL (4 ppt for PFOA and PFOS), with compliance required from 2029.
Comparable Water Systems
Similar-sized systems in New Jersey
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
Sparta Twp Water Utility - Lake Mohawk (EPA ID: NJ1918004) is a community water system in New Jersey that serves approximately 17,625 people from groundwater sources.
This system provides water to 2 ZIP codes across 2 communities.
Violation History
Status breakdown for accepted records with record years 2021-2026: 10 resolved, 1 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 |
|---|---|---|---|
| July 1, 2025 | Lead and Copper Rule | Non-health-based | Archived |
| October 11, 2023 | Revised Total Coliform Rule | Non-health-based | Resolved |
| October 1, 2023 | Consumer Confidence Rule | Non-health-based | Resolved |
| September 1, 2023 | Revised Total Coliform Rule | Non-health-based | Resolved |
| July 14, 2023 | Lead and Copper Rule | Health-based | Unaddressed (current) |
| July 1, 2023 | Consumer Confidence Rule | Non-health-based | Resolved |
| October 1, 2022 | Consumer Confidence Rule | Non-health-based | Resolved |
| September 29, 2022 | Lead and Copper Rule | Non-health-based | Resolved |
| July 1, 2022 | Consumer Confidence Rule | Non-health-based | Resolved |
| May 13, 2021 | E. COLI | Non-health-based | Resolved |
| January 1, 2021 | Lead and Copper Rule | Health-based | Resolved |
| January 1, 2021 | Lead and Copper Rule | Health-based | Resolved |
Contaminants Detected
The following contaminants have been flagged in EPA records for this water system:
| Contaminant | Category | Violations | Health-Based |
|---|---|---|---|
| Lead and Copper Rule | Treatment Technique, Monitoring & Reporting | 5 | Yes |
| Consumer Confidence Rule | Other (notice or report rule) | 4 | No |
| Revised Total Coliform Rule | Monitoring & Reporting | 2 | No |
| E. COLI | Monitoring & Reporting | 1 | No |
Lead & Copper
EPA Lead and Copper Rule evidence attributed directly to this water system:
| Lead Level | Exceeds Action Level | Sample Date |
|---|---|---|
| 0.001 mg/L | No | 2026-06-30 |
The accepted LCR snapshot contains 1 reported copper action-level exceedance record for this PWSID. The source does not provide a verified copper level for publication.
Radon Risk in Service Area
2 of 2 ZIP records with known zones are in EPA Radon Zone 1.
The EPA recommends testing all homes regardless of radon zone. County radon zones cannot replace an in-home radon test.
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 available EPA compliance records for Sparta Twp Water Utility - Lake Mohawk (NJ1918004) on EPA.gov.
Frequently Asked Questions
Is Sparta Twp Water Utility - Lake Mohawk water safe to drink?
The accepted 2026Q2 ECHO snapshot shows 1 current health-based noncompliance record for Sparta Twp Water Utility - Lake Mohawk. Review the utility's current notices and EPA record. This system-level compliance history cannot determine conditions at a specific tap.
How many people does Sparta Twp Water Utility - Lake Mohawk serve?
Sparta Twp Water Utility - Lake Mohawk serves approximately 17,625 people across 2 ZIP codes in New Jersey.
Where does Sparta Twp Water Utility - Lake Mohawk get its water?
The primary water source is groundwater.
Federal UCMR5 PFAS Monitoring: Sample Above an EPA MCL Value or State Standard
This water system was tested under the federal EPA Unregulated Contaminant Monitoring Rule (UCMR5). One or more PFAS measurements were above the level of the EPA MCL for that compound (April 2024 rule, which takes effect in 2029) or above an applicable state drinking-water standard; a monitoring result above that level is not by itself a violation.
EPA's April 2024 PFAS rule sets MCLs of 4 ppt for PFOA and PFOS and 10 ppt for PFHxS, PFNA and HFPO-DA (GenX); water systems must comply from 2029. Other PFAS compounds have no individual federal MCL. A state standard is shown only where this system's state has its own enforceable PFAS limit. Detection results are EPA UCMR5 samples, not a measurement at your tap.
Source: U.S. EPA UCMR5 (Unregulated Contaminant Monitoring Rule, 5th cycle) — per-system federal sampling, 2023–2025. EPA UCMR5 monitoring program →
How Water Systems Appear in Rankings
Water systems are evaluated by violation history, contaminant detections, and service population. Larger systems with more service connections appear in more rankings.
- #57 / 100 Most Unresolved Health Violations (U.S.)
- #13 / 50 Highest Exposure Burden (New Jersey)
Frequently Asked Questions
How to cite this page
ZipCheckup. (n.d.). Sparta Twp Water Utility - Lake Mohawk: 3 Health Violations. https://zipcheckup.com/water-system/nj1918004/
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What You Can Do
Test your water
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Check your specific ZIP code
Water quality can vary within a system. View nearest ZIP report →
Contact your utility
Sparta Twp Water Utility - Lake Mohawk (EPA ID: NJ1918004) - request the latest Consumer Confidence Report or ask about specific contaminants.