Public water system · NY4940015
ActiveTown of Waterloo Water District
At a glance
Town of Waterloo Water District (PWSID NY4940015) is an active community water system in Seneca County, New York. It reports serving 250 people through 250 service connections. Its primary water source is purchased surface water, and EPA lists it as owned by a local government. EPA's records list 7 violations for this system; none is health-based, and the most recent began in January 2020.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
250
Service connections
250
Primary source
SWP
Purchased surface water
System type
CWS
Community water system
System record
How does Town of Waterloo Water District compare with other water systems in Seneca County?
By EPA's size categories, Town of Waterloo Water District is a very small system (500 people or fewer). Seneca County has 87 active public water systems. Its population served is about 22% below the county average of 319 people per system, and accounts for 0.9% of the 27,760 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 Town of Waterloo Water District 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 Town of Waterloo Water District?
EPA lists Town of Waterloo 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. 24 of the 87 active systems in Seneca County (28%) are also owned by a local government.
Does Town of Waterloo Water District have drinking water violations?
EPA's records list 7 violations for this system; none is health-based, and the most recent began in January 2020. The violations listed here began between February 2010 and January 2020. By type: 5 monitoring and reporting, 1 monitoring and 1 public notice, recordkeeping or other. The contaminant or rule involved most often is Total trihalomethanes (TTHM) (2 of them). EPA lists 5 as resolved and 2 as archived. 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. Archived means the violation was not marked resolved but is more than five years past the end of the noncompliance period, so it no longer counts toward current compliance status.
| Began | Violation | Contaminant or rule | Health-based | Status |
|---|---|---|---|---|
| 2020-01-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Total trihalomethanes (TTHM)code 2950 | No | Archived |
| 2020-01-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Haloacetic acids (HAA5)code 2456 | No | Archived |
| 2018-12-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2017-07-01 | Public notice, recordkeeping or otherConsumer Confidence Report Complete Failure to Report · code 71 | Consumer Confidence Rulecode 7000 | No | Resolved |
| 2016-01-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Total trihalomethanes (TTHM)code 2950 | No | Resolved |
| 2016-01-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Haloacetic acids (HAA5)code 2456 | No | Resolved |
| 2010-02-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
All 7 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.
Town of Waterloo Water District: frequently asked questions
Who runs Town of Waterloo Water District?
Town of Waterloo Water District (PWSID NY4940015) is a community water system owned by a local government. It is regulated by the NY state drinking water program.
How many people does Town of Waterloo Water District serve?
Town of Waterloo Water District reports serving 250 people through 250 service connections in Seneca County, New York.
Where does Town of Waterloo 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 Town of Waterloo Water District have any drinking water violations?
EPA's records list 7 violations for this system; none is health-based, and the most recent began in January 2020. 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 Town of Waterloo 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. EPA's records list 7 violations for this system; none is health-based, and the most recent began in January 2020. For current results, consult the system's annual water quality report, EPA ECHO, or the NY state drinking water program.
Where can I find Town of Waterloo Water District's water quality report?
As a community water system, Town of Waterloo 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 Seneca County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Seneca Falls | Seneca | 9,400 | Community | Surface water |
| Waterloo Village | Seneca | 7,000 | Community | Surface water |
| Seneca County Water District #1 | Seneca | 1,820 | Community | Purchased surface water |
| Border City Water District | Seneca | 1,600 | Community | Purchased surface water |
| Ovid Village | Seneca | 990 | Community | Surface water |
| Interlaken Village | Seneca | 650 | Community | Groundwater |
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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, “Town of Waterloo Water District, PWSID NY4940015, New York”, https://aquacensus.com/water-systems/new-york/town-of-waterloo-water-district-ny4940015 (data as of October 1, 2026).