Public water system · NY5503390
ActiveUlster Water District
At a glance
Ulster Water District (PWSID NY5503390) is an active community water system in Ulster County, New York. It reports serving 5,500 people through 1,822 service connections. Its primary water source is purchased surface water, and EPA lists it as owned by a local government. Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in November 2023.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
5,500
Service connections
1,822
Primary source
SWP
Purchased surface water
System type
CWS
Community water system
System record
How does Ulster Water District compare with other water systems in Ulster County?
By EPA's size categories, Ulster Water District is a medium system (3,301 to 10,000 people). Ulster County has 446 active public water systems, and Ulster Water District is the 3rd-largest of them by population served. Its population served is about 18 times the county average of 298 people per system, and accounts for 4.1% of the 133,020 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 Ulster Water District is about 18% 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 Ulster Water District?
EPA lists Ulster Water District 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. 48 of the 446 active systems in Ulster County (11%) are also owned by a local government.
Does Ulster Water District have drinking water violations?
Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in November 2023. The violations listed here began between July 2017 and November 2023. By type: 11 monitoring and reporting and 1 monitoring. The contaminants or rules involved are Revised Total Coliform Rule, 1,2,4-Trichlorobenzene, cis-1,2-Dichloroethylene and Ethylbenzene. EPA lists 12 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 |
|---|---|---|---|---|
| 2023-11-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2017-07-01 | Monitoring and reportingMonitoring, Regular · code 03 | 1,2,4-Trichlorobenzenecode 2378 | No | Resolved |
| 2017-07-01 | Monitoring and reportingMonitoring, Regular · code 03 | cis-1,2-Dichloroethylenecode 2380 | No | Resolved |
| 2017-07-01 | Monitoring and reportingMonitoring, Regular · code 03 | Ethylbenzenecode 2992 | No | Resolved |
| 2017-07-01 | Monitoring and reportingMonitoring, Regular · code 03 | Toluenecode 2991 | No | Resolved |
| 2017-07-01 | Monitoring and reportingMonitoring, Regular · code 03 | o-Dichlorobenzenecode 2968 | No | Resolved |
| 2017-07-01 | Monitoring and reportingMonitoring, Regular · code 03 | Vinyl chloridecode 2976 | No | Resolved |
| 2017-07-01 | Monitoring and reportingMonitoring, Regular · code 03 | 1,1-Dichloroethylenecode 2977 | No | Resolved |
| 2017-07-01 | Monitoring and reportingMonitoring, Regular · code 03 | 1,2-Dichloroethanecode 2980 | No | Resolved |
| 2017-07-01 | Monitoring and reportingMonitoring, Regular · code 03 | 1,1,1-Trichloroethanecode 2981 | No | Resolved |
| 2017-07-01 | Monitoring and reportingMonitoring, Regular · code 03 | 1,1,2-Trichloroethanecode 2985 | No | Resolved |
| 2017-07-01 | Monitoring and reportingMonitoring, Regular · code 03 | Tetrachloroethylenecode 2987 | No | Resolved |
The 12 most recent 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.
Ulster Water District: frequently asked questions
Who runs Ulster Water District?
Ulster Water District (PWSID NY5503390) is a community water system owned by a local government. It is regulated by the NY state drinking water program.
How many people does Ulster Water District serve?
Ulster Water District reports serving 5,500 people through 1,822 service connections in Ulster County, New York.
Where does Ulster Water District 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 Ulster Water District have any drinking water violations?
Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in November 2023. 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 Ulster Water District'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. Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in November 2023. For current results, consult the system's annual water quality report, EPA ECHO, or the NY state drinking water program.
Where can I find Ulster Water District's water quality report?
As a community water system, Ulster Water District 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 Ulster County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Kingston (City) Water District | Ulster | 24,000 | Community | Surface water |
| New Paltz (Village) Water Dist | Ulster | 7,523 | Community | Surface water |
| Port Ewen Water District | Ulster | 4,500 | Community | Surface water |
| Ellenville (Village) Water Dis | Ulster | 4,300 | Community | Groundwater |
| Saugerties (Village) Water Dis | Ulster | 4,200 | Community | Surface water |
| Glasco Water District | Ulster | 4,071 | 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, “Ulster Water District, PWSID NY5503390, New York”, https://aquacensus.com/water-systems/new-york/ulster-water-district-ny5503390 (data as of October 1, 2026).