Manalapan Twp - Knob Hill
EPA ID: NJ1326002 · 8,700 people served · 1 ZIP code
ZipCheckup's reading of EPA SDWIS for Manalapan Twp - Knob Hill (NJ1326002): 1 EPA violation in the last five years. On record: Manalapan Twp - Knob Hill, 1 violation, all resolved, 8,700 in service area.
Data: EPA SDWIS
Service Area Map
Coverage area for Manalapan Twp - Knob Hill Source: EPA SDWIS service area boundaries.
Service area boundary
Service Area Demographics
The Manalapan Twp - Knob Hill serves a community with a median household income of $145,625 and an estimated 44,698 residents across its service area. Approximately 54% of housing stock was built before 1986, which increases the likelihood of lead service lines and older plumbing.
🌊 Where Does Your Water Come From?
Manalapan Twp - Knob Hill's water is drawn from rivers, lakes, or reservoirs. Surface water sources are more exposed to agricultural runoff, stormwater, and upstream discharges, but they typically receive more intensive treatment before reaching your tap.
Superfund Proximity Note: This service area ranks in the 70th percentile nationally for proximity to Superfund (NPL) sites.
Infrastructure Risk
Detected Contaminants
How Manalapan Twp - Knob Hill compares to EPA limits
What This Means For You
Revised Total Coliform Rule at 1 presence exceeds the EPA maximum of presence.
PFAS Detected in Service Area
PFAS ("forever chemicals") have been detected in water serving this system's area. 4 detections recorded. 1 exceeds federal EPA limits (4 ppt for PFOA/PFOS).
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
Manalapan Twp - Knob Hill (EPA ID: NJ1326002) is a community water system in New Jersey that serves approximately 8,700 people from surface water sources.
This system serves ZIP code 07726 in Englishtown.
Violation History
Status breakdown for accepted records with record years 2021-2026: 0 resolved, 1 archived, 0 addressed, and 0 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, 2024 | Revised Total Coliform Rule | Non-health-based | Archived |
Contaminants Detected
The following contaminants have been flagged in EPA records for this water system:
| Contaminant | Category | Violations | Health-Based |
|---|---|---|---|
| Revised Total Coliform Rule | Microbiological | 1 | No |
Lead & Copper
EPA Lead and Copper Rule evidence attributed directly to this water system:
| Lead Level | Exceeds Action Level | Sample Date |
|---|---|---|
| 0.00263 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.
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.
- 07726 - Englishtown
Data Sources
This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View the full compliance record for Manalapan Twp - Knob Hill (NJ1326002) on EPA.gov.
Frequently Asked Questions
Is Manalapan Twp - Knob Hill water safe to drink?
The accepted 2026Q2 ECHO snapshot shows no current noncompliance for Manalapan Twp - Knob Hill; its 1 accepted 2021-2026 record are resolved or archived. Historical compliance status does not establish conditions at a specific tap.
How many people does Manalapan Twp - Knob Hill serve?
Manalapan Twp - Knob Hill serves approximately 8,700 people across 1 ZIP code in New Jersey.
Where does Manalapan Twp - Knob Hill get its water?
The primary water source is surface water.
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 →
Frequently Asked Questions
How to cite this page
ZipCheckup. (n.d.). Manalapan Twp - Knob Hill (NJ): 1 EPA Violation. https://zipcheckup.com/water-system/nj1326002/
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title = {{Manalapan Twp - Knob Hill (NJ): 1 EPA Violation}},
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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
Manalapan Twp - Knob Hill (EPA ID: NJ1326002) - request the latest Consumer Confidence Report or ask about specific contaminants.