Public water system record
East Windsor MUA
Serves an area of Mercer County, NJ that includes Twin Rivers · 25,000 people served
Federal records show 1 health-based violation and 10 monitoring/reporting issues for East Windsor MUA in the last ten years. The most serious issue in this window was a Gross Alpha, Excl. Radon and U violation that EPA lists as archived, not resolved.
System profile
- Health-based violations, last 10 years
- 1
- Resolved
- 0
- Unresolved
- 0
- Archived by EPA
- 1
- Any acute record
- No
- Monitoring issues, last 10 years
- 10
Key facts
- East Windsor MUA draws water from 6 wells.
- Highest measured level in the last 10 years: Gross Alpha, Excl. Radon and U, 20 pCi/L, federal limit 15 pCi/L (1.3 times the limit), 2024.
- Most recent formal enforcement: administrative penalty by New Jersey, March 2014.
- Record on file since 2005, with 0 health-based violations before October 19, 2016.
- Lead pipe inventory: 0 lead and 0 unknown out of 6,995 service lines.
Check whether East Windsor MUA 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 |
|---|---|---|---|---|
|
Gross Alpha, Excl. Radon and U
Contaminant limit exceeded
Measured 20 pCi/L, federal limit 15 pCi/L (1.3 times the limit)
|
340 | Apr 1, 2024 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
No |
Monitoring and reporting issues
Since October 2016Missed tests or reports, not contaminants found above a limit.
| Issue | Start date | Status |
|---|---|---|
|
E. coli
Monitoring and reporting
|
Jul 9, 2024 | Resolved |
|
Beryllium, Total
Monitoring and reporting
|
Jan 1, 2020 | Resolved |
|
Chromium (total)
Monitoring and reporting
|
Jan 1, 2020 | Resolved |
|
Cadmium
Monitoring and reporting
|
Jan 1, 2020 | Resolved |
|
Nickel
Monitoring and reporting
|
Jan 1, 2020 | Resolved |
|
Thallium, Total
Monitoring and reporting
|
Jan 1, 2020 | Resolved |
|
Selenium
Monitoring and reporting
|
Jan 1, 2020 | Resolved |
|
Antimony, Total
Monitoring and reporting
|
Jan 1, 2020 | Resolved |
|
Barium
Monitoring and reporting
|
Jan 1, 2020 | Resolved |
|
CYANIDE
Monitoring and reporting
|
Jan 1, 2017 | Resolved |
Full record since 2005
EPA's records for East Windsor MUA go back to 2005. Before October 19, 2016 they list no health-based violations and 29 monitoring or reporting violations.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 2000s | 0 | 3 |
| 2010 to October 18, 2016 | 0 | 26 |
| October 19, 2016 to 2019 | 0 | 1 |
| 2020s | 1 | 9 |
Enforcement actions
New Jersey regulators took 1 formal enforcement action against East Windsor MUA in 2014, filed as 2 records in EPA's data. The most recent was an administrative penalty in March 2014.
| Date | By | Action | Violations covered |
|---|---|---|---|
| Mar 28, 2014 | New Jersey | Administrative penalty | 4 violations: Total Trihalomethanes (TTHMs), Haloacetic Acids (HAA5) |
What the violations mean
Gross Alpha, Excl. Radon and U
1 incidentTest results for Gross Alpha, Excl. Radon and U were above the federal limit (a maximum contaminant level violation).
The utility had to notify customers about this violation.
Where the water comes from
East Windsor MUA draws water from 6 wells.
Annual water quality report
East Windsor MUA 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 10,000 or more people must mail or deliver the report to every customer, and from 2027 they must send it twice a year.
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