Public water system · NY6101265
ActiveMiddlesex Wd
At a glance
Middlesex Wd (PWSID NY6101265) is an active community water system in Yates County, New York. It reports serving 460 people through 171 service connections. Its primary water source is purchased surface water, and EPA lists it as owned by a local government. EPA's records list 9 violations for this system; 2 are health-based, and the most recent began in February 2025.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
460
Service connections
171
Primary source
SWP
Purchased surface water
System type
CWS
Community water system
System record
How does Middlesex Wd compare with other water systems in Yates County?
By EPA's size categories, Middlesex Wd is a very small system (500 people or fewer). Yates County has 67 active public water systems. Its population served is about 57% above the county average of 293 people per system, and accounts for 2.3% of the 19,649 people reported by systems filed under the county. Across New York, the 8,167 active systems average 2,374 people each. Nationally, the average active community water system reports serving 6,703 people, so Middlesex Wd is well below that figure.
What does “community water system” mean?
A community water system serves at least 15 connections used by year-round residents, or regularly serves at least 25 year-round residents. Homes, apartments and mobile-home parks are served by these. New York has 2,281 active community water systems, 28% of the state's 8,167 active systems. Purchased surface water means the system buys surface water from another public water system rather than drawing its own. 399 New York systems (4.9%) list purchased surface water as their primary source.
Who owns and regulates Middlesex Wd?
EPA lists Middlesex Wd as owned by a local government. The NY state drinking water program is its primacy agency, the regulator with primary enforcement responsibility for the system under the Safe Drinking Water Act. 12 of the 67 active systems in Yates County (18%) are also owned by a local government.
Does Middlesex Wd have drinking water violations?
EPA's records list 9 violations for this system; 2 are health-based, and the most recent began in February 2025. The violations listed here began between March 1995 and February 2025. By type: 3 monitoring and reporting, 3 public notice, recordkeeping or other, 2 contaminant level above the legal limit and 1 monitoring. The contaminant or rule involved most often is Total trihalomethanes (TTHM) (3 of them). EPA lists 9 as resolved. Resolved means at least one resolving action is on record: the system returned to compliance, the rule no longer applies, or no further action was needed.
| Began | Violation | Contaminant or rule | Health-based | Status |
|---|---|---|---|---|
| 2025-02-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2024-07-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Total trihalomethanes (TTHM)code 2950 | No | Resolved |
| 2024-07-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Haloacetic acids (HAA5)code 2456 | No | Resolved |
| 2019-04-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Total trihalomethanes (TTHM)code 2950 | Yes | Resolved |
| 2006-07-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Total trihalomethanes (TTHM)code 2950 | Yes | Resolved |
| 2005-09-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2005-07-01 | Public notice, recordkeeping or otherConsumer Confidence Report Complete Failure to Report · code 71 | Consumer Confidence Rulecode 7000 | No | Resolved |
| 2003-03-01 | Public notice, recordkeeping or otherOperations Report · code 10 | Not reported | No | Resolved |
| 1995-03-01 | Public notice, recordkeeping or otherOperations Report · code 10 | Not reported | No | Resolved |
All 9 violations in EPA's records, newest first.Labels and codes come from EPA's SDWIS reference tables. A monitoring or reporting violation means a required test or report was missed or late; it does not by itself mean a contaminant was found. "Health-based" marks violations of a legal limit or required treatment.
Middlesex Wd: frequently asked questions
Who runs Middlesex Wd?
Middlesex Wd (PWSID NY6101265) is a community water system owned by a local government. It is regulated by the NY state drinking water program.
How many people does Middlesex Wd serve?
Middlesex Wd reports serving 460 people through 171 service connections in Yates County, New York.
Where does Middlesex Wd get its water?
EPA SDWIS lists this system's primary water source as purchased surface water. Purchased surface water means the system buys surface water from another public water system rather than drawing its own.
Does Middlesex Wd have any drinking water violations?
EPA's records list 9 violations for this system; 2 are health-based, and the most recent began in February 2025. A monitoring or reporting violation means a required test or report was missed or late; it does not by itself mean a contaminant was found.
Is Middlesex Wd's water safe to drink?
AquaCensus shows EPA compliance records, not current water test results, so it cannot say whether the water is safe at a given moment. EPA's records list 9 violations for this system; 2 are health-based, and the most recent began in February 2025. For current results, consult the system's annual water quality report, EPA ECHO, or the NY state drinking water program.
Where can I find Middlesex Wd's water quality report?
As a community water system, Middlesex Wd must deliver an annual water quality report, called a Consumer Confidence Report, to its customers by July 1 each year, covering the previous calendar year. The system can provide a copy on request.
Other water systems in Yates County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Penn Yan Village | Yates | 5,248 | Community | Surface water |
| Keuka Park Wd | Yates | 3,000 | Community | Purchased surface water |
| Dundee Village | Yates | 1,765 | Community | Groundwater |
| Milo Town Csa | Yates | 1,416 | Community | Purchased surface water |
| Windmill Farm Market | Yates | 1,000 | Transient non-community | Groundwater |
| Dresden Village | Yates | 720 | Community | Purchased surface water |
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About this data
Source: U.S. EPA Safe Drinking Water Information System (SDWIS) and SDWA violation records, via EPA ECHO, as published October 1, 2026 — AquaCensus refreshes it quarterly. See the methodology for how records are matched, cleaned and scored.
Cite as: AquaCensus, “Middlesex Wd, PWSID NY6101265, New York”, https://aquacensus.com/water-systems/new-york/middlesex-wd-ny6101265 (data as of October 1, 2026).