MAMARONECK, NY · Westchester County
WESTCHESTER JOINT WATER WORKS Water System
Consumer Confidence Report status
WESTCHESTER JOINT WATER WORKS must publish a Consumer Confidence Report — the annual drinking water quality report covering calendar year 2026 — by July 1, 2027.
As of August 1, 2026, EPA's federal records show no open violations for WESTCHESTER JOINT WATER WORKS.
Data sourced from the EPA ECHO database (SDWA bulk download), last refreshed August 1, 2026. This is a record-keeping and public-information tool — it does not replace New York’s official records. Always confirm current status with New York before making decisions based on this information.
System facts
- System ID (PWSID)
- NY5903435
- System type
- Community Water System
- Population served
- 59,629
- Service connections
- 12,000
- Ownership
- local government
- Water source
- surface water (rivers, lakes, or reservoirs)
WESTCHESTER JOINT WATER WORKS is one of 156 community water systems in New York in the 10,001 to 100,000 people size category, serving 59,629 people from surface water.
As of August 1, 2026, its federal record holds 2 entries between 2009 and 2019, all of which EPA lists as closed. Nothing has been added since 2019.
Of the 2, 1 are monitoring and reporting requirements — the category that accounts for about four in five of all violations in EPA's national dataset — rather than findings about the water itself. The record involves the Stage 2 Disinfectants and Disinfection Byproducts Rule and the Lead and Copper Rule.
Violation history
Maximum Contaminant Level Violation, Average
Health-basedTotal Haloacetic Acids (HAA5)
April 1, 2019 – June 27, 2019
ResolvedWater Quality Parameter M/R
—Lead and Copper Rule
January 1, 2009 – June 30, 2009
Resolved
Resolved addressed and confirmed by the state
| Period | Violation | Contaminant / rule | Health-based | Status |
|---|---|---|---|---|
| April 1, 2019 – June 27, 2019 | Maximum Contaminant Level Violation, Average | Total Haloacetic Acids (HAA5) | Health-based | Resolved |
| January 1, 2009 – June 30, 2009 | Water Quality Parameter M/R | Lead and Copper Rule | — | Resolved |
Resolved addressed and confirmed by the state
Enforcement actions
- May 24, 2021State Public Notification received248 linked violations
Common questions
Is WESTCHESTER JOINT WATER WORKS required to publish a Consumer Confidence Report?
- Yes. WESTCHESTER JOINT WATER WORKS is a community water system, and federal rules (40 CFR 141 Subpart O) require every community water system to publish a Consumer Confidence Report each year.
When is WESTCHESTER JOINT WATER WORKS’s next Consumer Confidence Report due?
- WESTCHESTER JOINT WATER WORKS’s next Consumer Confidence Report is due by July 1, 2027. The report covers calendar year 2026.
Does WESTCHESTER JOINT WATER WORKS have any open drinking water violations on record?
- As of August 1, 2026, EPA's federal records show no open violations for WESTCHESTER JOINT WATER WORKS.
What is a Consumer Confidence Report?
- A Consumer Confidence Report (CCR) is the annual drinking water quality report that community water systems must provide to the people they serve. It lists the contaminants detected in the system’s water during the year, where the water comes from, and how the results compare with federal limits. EPA’s revised CCR rule takes effect January 1, 2027, and the first reports in the new format are due July 1, 2027.
Contact
MURPHY, THOMAS A
914-777-7722
MAMARONECK, NY 10543