Public water system record
Highlander Hills Estates
Serves Oxford, Warren County, NJ · 120 people served
Federal records show 2 health-based violations and 52 monitoring/reporting issues for Highlander Hills Estates in the last ten years. The most serious issue in this window was a resolved Revised Total Coliform Rule violation.
System profile
- Health-based violations, last 10 years
- 2
- Resolved
- 2
- Unresolved
- 0
- Any acute record
- Yes
- Monitoring issues, last 10 years
- 52
Key facts
- Highlander Hills Estates draws water from 1 well.
- Most recent enforcement action: boil water order by New Jersey, October 2025.
- Record on file since 1979, with 10 health-based violations before October 19, 2016.
- Lead pipe inventory: 0 lead and 56 unknown out of 81 service lines.
Check whether Highlander Hills Estates serves your address
Health-based violations
Since October 2016Violation data reflects EPA records through March 2026. For the most current status, visit the EPA ECHO database.
| Contaminant | Rule family | Start date | Status | Acute |
|---|---|---|---|---|
|
Revised Total Coliform Rule
Contaminant limit exceeded
|
110 | Oct 1, 2025 | Resolved | Yes |
|
Revised Total Coliform Rule
Treatment technique failure
|
110 | Oct 18, 2019 | Resolved | No |
Monitoring and reporting issues
Since October 2016Missed tests or reports, not contaminants found above a limit.
| Issue | Start date | Status |
|---|---|---|
|
Lead and Copper Rule
Monitoring and reporting
|
Dec 30, 2025 | Active |
|
Consumer Confidence Rule
OTHER
|
Oct 1, 2025 | Active |
|
Consumer Confidence Rule
OTHER
|
Jul 1, 2025 | Active |
|
Consumer Confidence Rule
OTHER
|
Jul 1, 2024 | Active |
|
E. coli
Monitoring and reporting
|
Mar 12, 2024 | Resolved |
|
Lead and Copper Rule
Monitoring and reporting
|
Dec 30, 2019 | Resolved |
|
Revised Total Coliform Rule
RPT
|
Dec 11, 2019 | Resolved |
|
1,2-DIBROMO-3-CHLOROPROPANE
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
ETHYLENE DIBROMIDE
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
Revised Total Coliform Rule
RPT
|
Oct 11, 2018 | Resolved |
|
E. coli
Monitoring and reporting
|
May 29, 2018 | Resolved |
|
Selenium
Monitoring and reporting
|
Jan 1, 2017 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
|
Thallium, Total
Monitoring and reporting
|
Jan 1, 2017 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
|
Beryllium, Total
Monitoring and reporting
|
Jan 1, 2017 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
|
Antimony, Total
Monitoring and reporting
|
Jan 1, 2017 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
|
Nickel
Monitoring and reporting
|
Jan 1, 2017 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
|
Mercury
Monitoring and reporting
|
Jan 1, 2017 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
|
Fluoride
Monitoring and reporting
|
Jan 1, 2017 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
|
CYANIDE
Monitoring and reporting
|
Jan 1, 2017 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
|
Chromium (total)
Monitoring and reporting
|
Jan 1, 2017 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
|
Cadmium
Monitoring and reporting
|
Jan 1, 2017 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
|
Barium
Monitoring and reporting
|
Jan 1, 2017 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
|
Arsenic
Monitoring and reporting
|
Jan 1, 2017 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
|
Styrene
Monitoring and reporting
|
Jan 1, 2017 | Resolved |
|
Ethylbenzene
Monitoring and reporting
|
Jan 1, 2017 | Resolved |
|
Toluene
Monitoring and reporting
|
Jan 1, 2017 | Resolved |
|
Benzene
Monitoring and reporting
|
Jan 1, 2017 | Resolved |
|
CHLOROBENZENE
Monitoring and reporting
|
Jan 1, 2017 | Resolved |
|
Tetrachloroethylene
Monitoring and reporting
|
Jan 1, 2017 | Resolved |
|
1,1,2-Trichloroethane
Monitoring and reporting
|
Jan 1, 2017 | Resolved |
|
Trichloroethylene
Monitoring and reporting
|
Jan 1, 2017 | Resolved |
|
1,2-Dichloropropane
Monitoring and reporting
|
Jan 1, 2017 | Resolved |
|
Carbon tetrachloride
Monitoring and reporting
|
Jan 1, 2017 | Resolved |
|
1,1,1-Trichloroethane
Monitoring and reporting
|
Jan 1, 2017 | Resolved |
|
1,2-Dichloroethane
Monitoring and reporting
|
Jan 1, 2017 | Resolved |
|
trans-1,2-Dichloroethylene
Monitoring and reporting
|
Jan 1, 2017 | Resolved |
|
1,1-Dichloroethylene
Monitoring and reporting
|
Jan 1, 2017 | Resolved |
|
Vinyl chloride
Monitoring and reporting
|
Jan 1, 2017 | Resolved |
|
p-Dichlorobenzene
Monitoring and reporting
|
Jan 1, 2017 | Resolved |
|
o-Dichlorobenzene
Monitoring and reporting
|
Jan 1, 2017 | Resolved |
|
DICHLOROMETHANE
Monitoring and reporting
|
Jan 1, 2017 | Resolved |
|
Xylenes, Total
Monitoring and reporting
|
Jan 1, 2017 | Resolved |
|
cis-1,2-Dichloroethylene
Monitoring and reporting
|
Jan 1, 2017 | Resolved |
|
1,2,4-Trichlorobenzene
Monitoring and reporting
|
Jan 1, 2017 | Resolved |
|
E. coli
Monitoring and reporting
|
Nov 15, 2016 | Resolved |
|
E. coli
Monitoring and reporting
|
Apr 12, 2016 | Resolved |
|
E. coli
Monitoring and reporting
|
Nov 17, 2015 | Resolved |
|
Radium-228
Monitoring and reporting
|
Jan 1, 2014 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
|
Radium-226
Monitoring and reporting
|
Jan 1, 2014 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
|
Combined Radium (-226 and -228)
Monitoring and reporting
|
Jan 1, 2014 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
|
Combined Uranium
Monitoring and reporting
|
Jan 1, 2014 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
|
Gross Alpha, Excl. Radon and U
Monitoring and reporting
|
Jan 1, 2014 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
Full record since 1979
EPA's records for Highlander Hills Estates go back to 1979. Before October 19, 2016 they list 10 health-based violations (10 resolved) and 26 monitoring or reporting violations.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 1970s | 0 | 7 |
| 1980s | 0 | 8 |
| 1990s | 0 | 1 |
| 2000s | 1 | 0 |
| 2010 to October 18, 2016 | 9 | 10 |
| October 19, 2016 to 2019 | 1 | 40 |
| 2020s | 1 | 5 |
Most recent health-based violation before October 19, 2016: Total Coliform, began November 2015, Resolved.
Show all 10 health-based violations before October 19, 2016
| Contaminant | Start date | Status |
|---|---|---|
|
Total Coliform
Contaminant limit exceeded
|
Nov 1, 2015 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
May 1, 2015 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Dec 1, 2014 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Nov 1, 2014 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Nov 1, 2012 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Oct 1, 2012 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Sep 1, 2012 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Dec 1, 2010 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Sep 1, 2010 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Oct 1, 2009 | Resolved |
Enforcement actions
New Jersey regulators took 2 formal enforcement actions against Highlander Hills Estates and issued 1 boil water order between 2012 and 2025. The most recent was a boil water order in October 2025.
| Date | By | Action | Violations covered |
|---|---|---|---|
| Oct 27, 2025 | New Jersey | Boil water order | 1 violation (1 health-based): Revised Total Coliform Rule |
| Mar 30, 2022 | New Jersey | Administrative penalty | 38 violations: CYANIDE, Mercury, Antimony, Total, Gross Alpha, Excl. Radon and U, Combined Radium (-226 and -228) |
| Jul 27, 2012 | New Jersey | Administrative penalty | 1 violation: Lead and Copper Rule |
What the violations mean
Revised Total Coliform Rule
2 incidentsThe system did not meet a requirement of the Revised Total Coliform Rule
Coliform and E. coli rules protect against bacteria in the distribution system
Where the water comes from
Highlander Hills Estates draws water from 1 well.
Annual water quality report
Highlander Hills Estates must give its customers an annual water quality report (Consumer Confidence Report) by July 1, with the levels its tests found in the previous year.
Systems serving 500 or fewer people may meet the rule by telling customers the report is available on request, so you may need to ask Highlander Hills Estates for a copy.
Find a posted report with EPA's Consumer Confidence Report search
Testing your own water
To test the water at your tap, or a private well this record does not cover, use a laboratory certified for drinking water by New Jersey.
Certified drinking water labs by state EPA guidance for private wells