Public water system record
Westchester County WD #3
Serves an area of Westchester County, NY · 6,000 people served
Federal records show 2 health-based violations and 3 monitoring/reporting issues for Westchester County WD #3 in the last ten years. The most serious issue in this window was a resolved Haloacetic Acids (HAA5) violation.
System profile
- Health-based violations, last 10 years
- 2
- Resolved
- 2
- Unresolved
- 0
- Any acute record
- No
- Monitoring issues, last 10 years
- 3
Key facts
- Westchester County WD #3 buys its water from New York City System.
- Highest measured level in the last 10 years: Haloacetic Acids (HAA5), 0.067 mg/L, federal limit 0.06 mg/L (1.1 times the limit), 2022.
- Most recent formal enforcement: compliance order (no penalty) by EPA, July 2022.
- Record on file since 2006, with 32 health-based violations before October 19, 2016.
- Lead pipe inventory: 0 lead and 41 unknown out of 74 service lines.
Check whether Westchester County WD #3 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 |
|---|---|---|---|---|
|
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 0.067 mg/L, federal limit 0.06 mg/L (1.1 times the limit)
|
220 | Jan 1, 2022 | Resolved | No |
|
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 0.067 mg/L, federal limit 0.06 mg/L (1.1 times the limit)
|
220 | Oct 1, 2021 | Resolved | No |
Monitoring and reporting issues
Since October 2016Missed tests or reports, not contaminants found above a limit.
| Issue | Start date | Status |
|---|---|---|
|
Revised Total Coliform Rule
Monitoring violation
|
Nov 1, 2023 | Resolved |
|
Haloacetic Acids (HAA5)
Monitoring and reporting
|
Jan 1, 2022 | Resolved |
|
Total Trihalomethanes (TTHMs)
Monitoring and reporting
|
Jan 1, 2022 | Resolved |
Full record since 2006
EPA's records for Westchester County WD #3 go back to 2006. Before October 19, 2016 they list 32 health-based violations (32 resolved) and 22 monitoring or reporting violations.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 2000s | 0 | 4 |
| 2010 to October 18, 2016 | 32 | 18 |
| 2020s | 2 | 3 |
Most recent health-based violation before October 19, 2016: Total Coliform, began February 2013, Resolved.
Show all 32 health-based violations before October 19, 2016
| Contaminant | Start date | Status |
|---|---|---|
|
Total Coliform
Contaminant limit exceeded
|
Feb 1, 2013 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Jul 1, 2012 | Resolved |
|
Surface Water Treatment Rule
Treatment technique failure
|
Jul 1, 2012 | Resolved |
|
Surface Water Treatment Rule
Treatment technique failure
|
Jul 1, 2012 | Resolved |
|
Surface Water Treatment Rule
Treatment technique failure
|
Jul 1, 2012 | Resolved |
|
Surface Water Treatment Rule
Treatment technique failure
|
Jul 1, 2012 | Resolved |
|
Surface Water Treatment Rule
Treatment technique failure
|
Jul 1, 2012 | Resolved |
|
Surface Water Treatment Rule
Treatment technique failure
|
Jul 1, 2012 | Resolved |
|
Surface Water Treatment Rule
Treatment technique failure
|
Jun 1, 2012 | Resolved |
|
Surface Water Treatment Rule
Treatment technique failure
|
Jun 1, 2012 | Resolved |
|
Surface Water Treatment Rule
Treatment technique failure
|
Jun 1, 2012 | Resolved |
|
Surface Water Treatment Rule
Treatment technique failure
|
Jun 1, 2012 | Resolved |
|
Surface Water Treatment Rule
Treatment technique failure
|
Jun 1, 2012 | Resolved |
|
Surface Water Treatment Rule
Treatment technique failure
|
Jun 1, 2012 | Resolved |
|
Surface Water Treatment Rule
Treatment technique failure
|
Jun 1, 2012 | Resolved |
|
Surface Water Treatment Rule
Treatment technique failure
|
Jun 1, 2012 | Resolved |
|
Surface Water Treatment Rule
Treatment technique failure
|
Jun 1, 2012 | Resolved |
|
Surface Water Treatment Rule
Treatment technique failure
|
Jun 1, 2012 | Resolved |
|
Surface Water Treatment Rule
Treatment technique failure
|
Jun 1, 2012 | Resolved |
|
Surface Water Treatment Rule
Treatment technique failure
|
Jun 1, 2012 | Resolved |
|
Surface Water Treatment Rule
Treatment technique failure
|
Jun 1, 2012 | Resolved |
|
Surface Water Treatment Rule
Treatment technique failure
|
Jun 1, 2012 | Resolved |
|
Surface Water Treatment Rule
Treatment technique failure
|
Jun 1, 2012 | Resolved |
|
Surface Water Treatment Rule
Treatment technique failure
|
Jun 1, 2012 | Resolved |
|
Surface Water Treatment Rule
Treatment technique failure
|
Jun 1, 2012 | Resolved |
|
Surface Water Treatment Rule
Treatment technique failure
|
Jun 1, 2012 | Resolved |
|
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 0.0659 mg/L, federal limit 0.06 mg/L (1.1 times the limit)
|
Apr 1, 2012 | Resolved |
|
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 0.072 mg/L, federal limit 0.06 mg/L (1.2 times the limit)
|
Oct 1, 2011 | Resolved |
|
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 0.0613 mg/L, federal limit 0.06 mg/L (at or just above the limit)
|
Jul 1, 2011 | Resolved |
|
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 0.0639 mg/L, federal limit 0.06 mg/L (1.1 times the limit)
|
Apr 1, 2011 | Resolved |
|
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 0.0717 mg/L, federal limit 0.06 mg/L (1.2 times the limit)
|
Jul 1, 2010 | Resolved |
|
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 0.0667 mg/L, federal limit 0.06 mg/L (1.1 times the limit)
|
Apr 1, 2010 | Resolved |
Enforcement actions
New York regulators and EPA took 2 formal enforcement actions against Westchester County WD #3 between 2012 and 2022. The most recent was a compliance order (no penalty) in July 2022.
| Date | By | Action | Violations covered |
|---|---|---|---|
| Jul 18, 2022 | EPA | Compliance order (no penalty) | 4 violations (2 health-based): Haloacetic Acids (HAA5), Total Trihalomethanes (TTHMs) |
| Oct 25, 2012 | New York | Compliance order with a penalty | 36 violations (24 health-based): Surface Water Treatment Rule, Public Notice |
What the violations mean
Haloacetic Acids (HAA5)
2 incidentsHaloacetic acid byproducts exceeded the federal limit
Long-term exposure to HAAs may increase cancer risk
Where the water comes from
Westchester County WD #3 buys its water from New York City System. It lists no wells or intakes of its own. It also has an emergency connection to Greenburgh Consolidated WD #1.
Buys water from
- New York City System Valhalla, NY
Emergency or part-time connections to
- Greenburgh Consolidated WD #1 Greenburgh, NY
Annual water quality report
Westchester County WD #3 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.
Where the state allows it, systems serving fewer than 10,000 people may publish the report in a local newspaper or news site instead of mailing it, and must provide a copy on request.
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 York.
Certified drinking water labs by state EPA guidance for private wells