Current Noncompliance NJ 1 HEALTH-BASED VIOLATION ON RECORD

Stillwater Water District 1

EPA ID: NJ1920001 ยท 1,200 people served ยท 2 ZIP codes

ZipCheckup's reading of EPA records for Stillwater Water District 1 (NJ1920001): 2 violations recorded with unresolved status in the SDWIS data used. Federal data lists 2 violations as unresolved at Stillwater Water District 1 - roughly 1,200 residents in the service area.

Data: EPA SDWIS

1,200
People Served
2
ZIP Codes Served
146
Violations (since 2021)
Groundwater
Water Source
Below the reporting limit
Most recent lead 90th percentile on record (monitoring period ending 2024-12-31)
Zone 1
County Radon Potential ยท High
46
Contaminants Flagged
$374K
Median Home Value in ZIP Codes Served

Service Area Map

Coverage area for Stillwater Water District 1 Source: EPA SDWIS service area boundaries.

Service area boundary

Demographics of ZIP Codes Served

$113,734
Median Household Income
35,792
Population of ZIP Codes Served (Census)
6%
Disadvantaged Population
25th
Poverty Percentile
50th
Energy Burden Percentile
71%
Pre-1986 Housing

The ZIP codes associated with Stillwater Water District 1 have a median household income of $113,734 and about 35,792 residents live in those ZIP codes (Census; not the number of people this system supplies). Approximately 71% of housing stock was built before 1986, which increases the likelihood of lead service lines and older plumbing.

๐Ÿ’ง Where Does Your Water Come From?

Groundwater

Stillwater Water District 1'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.

Elevated Risk
Source Contamination Risk
40th
Wastewater Discharge Proximity
70th
Superfund Site Proximity

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

59 yr
Estimated pipe age (modeled from housing age)
Copper
Likely pipe material (modeled)
9 yr
Est. Remaining Life
Accelerating decay (model estimate)
Decay Status
Installed 87% of expected lifespan used (estimate) End of life

Comparable Water Systems

Similar-sized systems in New Jersey

0 violations
Lawrenceville School
1,200 people
3 violations
C 4 violations
29 violations
0 violations

Estimated Remediation Costs

Average estimated costs across ZIP codes served by this system

Water Filtration
Water Filtration $450
Total Estimated Cost $450

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.

Cost of Inaction

Illustrative per-household cost scenario based on stated assumptions:

Estimated Healthcare Costs $1,500

Annual per household (ZipCheckup estimate)

Estimated Cumulative Cost Per Household

5 years
$7,500
10 years
$15,000
20 years
$30,000

Compare: Estimated remediation cost is $450 (one-time) vs. $15,000 in estimated inaction costs over 10 years.

Individual costs vary by household size, property, and health factors. These estimates are for awareness, not financial advice.

System Overview

Stillwater Water District 1 (EPA ID: NJ1920001) is a community water system in New Jersey that serves approximately 1,200 people from groundwater sources.

This system provides water to 2 ZIP codes across 2 communities.

Violation History

2 current noncompliance records in the accepted 2026Q2 snapshot; none are classified as health-based in this evidence.

Status breakdown for accepted records with record years 2021-2026: 61 resolved, 83 archived, 0 addressed, and 2 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
February 8, 2026 Revised Total Coliform Rule Non-health-based Unaddressed (current)
December 11, 2025 E. COLI Non-health-based Resolved
December 11, 2025 E. COLI Non-health-based Resolved
December 11, 2025 E. COLI Non-health-based Resolved
December 11, 2025 E. COLI Non-health-based Resolved
December 11, 2025 E. COLI Non-health-based Resolved
July 1, 2025 1,2-DIBROMO-3-CHLOROPROPANE Non-health-based Resolved
July 1, 2025 ETHYLENE DIBROMIDE Non-health-based Resolved
July 1, 2025 1,2-DIBROMO-3-CHLOROPROPANE Non-health-based Resolved
July 1, 2025 ETHYLENE DIBROMIDE Non-health-based Resolved
July 1, 2025 1,2-DIBROMO-3-CHLOROPROPANE Non-health-based Resolved
July 1, 2025 ETHYLENE DIBROMIDE Non-health-based Resolved
July 1, 2025 1,2-DIBROMO-3-CHLOROPROPANE Non-health-based Resolved
July 1, 2025 ETHYLENE DIBROMIDE Non-health-based Resolved
July 1, 2025 1,2-DIBROMO-3-CHLOROPROPANE Non-health-based Resolved
July 1, 2025 ETHYLENE DIBROMIDE Non-health-based Resolved
January 1, 2025 Nitrate Non-health-based Archived
January 1, 2025 Nitrate Non-health-based Archived
December 30, 2024 Lead and Copper Rule Non-health-based Unaddressed (current)
October 1, 2024 Gross Alpha Non-health-based Resolved

Contaminants Detected

The following contaminants have been flagged in EPA records for this water system:

Contaminant Category Violations Health-Based
1,2-DIBROMO-3-CHLOROPROPANE Other Violation 16 No
ETHYLENE DIBROMIDE Other Violation 16 No
Nitrate Monitoring & Reporting 6 No
E. COLI Monitoring & Reporting 6 No
Barium Inorganic 5 No
Cadmium Inorganic 5 No
Chromium Inorganic 5 No
Fluoride Inorganic 5 No
Selenium Inorganic 5 No
Nickel Inorganic 5 No
Nitrite Inorganic 5 No
Nickel Other Violation 5 No
Selenium Other Violation 5 No
Mercury Inorganic 5 No
Beryllium, Total Other Violation 5 No

Lead & Copper

EPA Lead and Copper Rule evidence attributed directly to this water system:

Lead Level Exceeds Action Level Sample Date
Below the reporting limit No 2024-12-31

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

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 Stillwater Water District 1 (NJ1920001) on EPA.gov.

Frequently Asked Questions

Is Stillwater Water District 1 water safe to drink?

The accepted 2026Q2 ECHO snapshot shows 2 current noncompliance records and zero current records classified as health-based. That classification is not a property-specific water test or safety guarantee.

How many people does Stillwater Water District 1 serve?

Stillwater Water District 1 serves approximately 1,200 people across 2 ZIP codes in New Jersey.

Where does Stillwater Water District 1 get its water?

The primary water source is groundwater.

Frequently Asked Questions

Should I use a water filter? ▼
Given 146 recorded violations, review the violation types and dates; a filter certified for a specific contaminant of concern can reduce that contaminant at the tap. Monitoring or reporting violations are not something a filter addresses.
How many people does Stillwater Water District 1 serve? ▼
Stillwater Water District 1 serves approximately 1,200 people with drinking water across 2 ZIP codes.
What is Stillwater Water District 1's water source? ▼
Stillwater Water District 1 draws water from groundwater sources. Source type affects which contaminants are most likely to be present.
Is there lead in Stillwater Water District 1's water? ▼
The reported 90th-percentile lead result is below the laboratory reporting limit, not a measured zero; EPA's health goal for lead is zero. This is at or below the EPA lead action level, which triggers system action and is not a safe level; the EPA health goal for lead is zero.
What is the demographic profile of the ZIP codes associated with Stillwater Water District 1? ▼
The ZIP codes mapped to Stillwater Water District 1 have a median household income of $113,734 (Census ZIP-code estimate). Demographic data is sourced from the U.S. Census Bureau and EPA EJScreen.
Where does Stillwater Water District 1 get its water? ▼
Stillwater Water District 1'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. The available violation history and environmental indicators place this system in the elevated review category; they do not measure current source contamination.

How to cite this page

APA ZipCheckup. (n.d.). Stillwater Water District 1 (NJ): 1 Health Violation. https://zipcheckup.com/water-system/nj1920001/
BibTeX
@misc{zipcheckup-water-system-nj1920001,
  author = {{ZipCheckup}},
  title  = {{Stillwater Water District 1 (NJ): 1 Health Violation}},
  year   = {n.d.},
  url    = {https://zipcheckup.com/water-system/nj1920001/}
}

What You Can Do

1

Test your water

Home test kits can detect lead, bacteria, and other contaminants at your tap. Find the right filter โ†’

2

Check your specific ZIP code

Water quality can vary within a system. View nearest ZIP report โ†’

3

Contact your utility

Stillwater Water District 1 (EPA ID: NJ1920001) - request the latest Consumer Confidence Report or ask about specific contaminants.

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