Westchester Joint Water Works
Surface water · Local · Village of Mamaroneck, 123 Mamaroneck Avenue
This page shows official EPA compliance records for Westchester Joint Water Works, including PFAS monitoring data, violation history, contaminant test results, treatment options, and certified testing lab links for New York.
Westchester Joint Water Works is a surface water system serving 59,629 residents in New York (PWSID: NY5903435). The system currently has 1 open health-based violation recorded in the EPA federal database.
At a Glance
NY5903435Intelligence Summary · Westchester Joint Water Works
No Concerns Detected
Water meets all safety standards with no detected exceedances.
Why safe?
This utility has 1 open health-based violation recorded by the EPA. These are cases where a contaminant exceeded the EPA's legal limit and has not yet been formally resolved in the federal database. Contact the utility directly or review their latest Consumer Confidence Report for current status.
Utility Overview
Population Served
59,629
Source Type
Surface water
Ownership
Local
PWSID
NY5903435
Detected Contaminants
CCR data ingestion in progress
Contaminant detection levels from Consumer Confidence Reports are being parsed and linked to utilities. Check back soon, or view the official report directly from the EPA links below.
View on EPA ECHOViolation History
Sourced from EPA SDWIS. Health-based violations mean a contaminant exceeded the legal limit. Monitoring/Reporting violations mean required test results were not submitted to EPA — not necessarily that the water is unsafe.
Treatment Technique
OpenMonitoring & Reporting — Lead
ResolvedMonitoring & Reporting — Lead
ResolvedTreatment Technique
ResolvedMCL Violation — Total Trihalomethanes (TTHMs)
ResolvedMCL Violation — Total Trihalomethanes (TTHMs)
ResolvedMCL Violation — Total Trihalomethanes (TTHMs)
Resolved1 additional monitoring/reporting failure
Required test submissions not filed with EPA — no contaminant data recorded. These are administrative failures, not health violations.
Filtration Recommendations
Based on contaminants found in health-based violations, these treatment methods are most relevant for residents.
Reverse Osmosis
Reverse osmosis (RO) is the most comprehensive point-of-use water treatment technology available for residential use.
Activated Carbon
Activated carbon is the most widely used residential water treatment technology.
Utilities With Similar Violations in New York
Other New York water systems with health-based violations involving the same contaminants detected at Westchester Joint Water Works.
What should I do next?
Westchester Joint Water Works has 1 open health-based violation in the EPA dataset. Review the full violation history, check available treatment options, and compare with nearby utilities.
Westchester Joint Water Works — Water Quality FAQs
Explore This Water System
New York drinking water report
State-level utility directory, open violations, and PFAS data
Official EPA contamination & sampling records
Violation history, PFAS detections, and official source links
Certified water testing labs in New York
State-certified labs for PFAS, lead, nitrate, and bacteria testing
Water treatment options
Reverse osmosis, activated carbon, and whole-home filtration guides
About this data
Data sources, update cadence, and accuracy notes
NEW YORK CITY SYSTEM
Nearby water system — compare violations and PFAS records
SUFFOLK COUNTY WATER AUTHORITY
Nearby water system — compare violations and PFAS records
Common Questions About This Water System
Is there PFAS data for New York water systems?
Official EPA UCMR 5 PFAS monitoring records for New York water systems
Are there EPA violations on record for Westchester Joint Water Works?
5 health-based violations recorded in EPA SDWIS
How do I get my water tested in New York?
State-certified labs for PFAS, lead, nitrate, and bacteria testing
What water treatment options address these contaminants?
Reverse osmosis, activated carbon, and whole-home filtration guides with NSF certification data
Where can I find official sampling records for this system?
Official EPA SDWIS violations and UCMR 5 PFAS sampling records with source links
Email me this water report
Receive a summary of official records for Westchester Joint Water Works — including source links, violation history, PFAS sampling data where available, and certified testing lab options.
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Public drinking water datasets may not include every recent test, private well result, household plumbing issue, or local advisory. Use this page as a starting point, not as a substitute for official guidance, your utility's Consumer Confidence Report, or professional testing.
Water Utility Report summarizes public records from official federal, state, utility, or testing datasets where available. For urgent health or compliance questions, contact your utility, local health department, or the EPA directly. How Water Utility Report uses public drinking water data
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Data Sources & Provenance
All data on this page is sourced from official U.S. government or public datasets.
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At a Glance
Service area match is likely but not guaranteed. Your water bill is the most reliable way to confirm your provider.
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