Public water system · NY3800154

Active

Oneonta City

At a glance

Oneonta City (PWSID NY3800154) is an active community water system in Otsego County, New York. It reports serving 15,954 people through 3,750 service connections. Its primary water source is surface water, and EPA lists it as owned by a local government. EPA's records list 8 violations for this system; none is health-based, and the most recent began in December 2024.

Dataset updated October 2026 . Source: EPA SDWIS/ECHO public records.

Population served

15,954

Service connections

3,750

Primary source

Surface water

System type

CWS

Community water system

System record

PWSIDNY3800154

System typeCommunity water system

Activity statusActive

Population served15,954

Service connections3,750

Primary water sourceSurface water

Owner typeLocal government

Primacy agencyNY state drinking water program

City servedOneonta (C)

StateNew York

ZIP—

CountyOtsego County

How does Oneonta City compare with other water systems in Otsego County?

By EPA's size categories, Oneonta City is a large system (10,001 to 100,000 people). Otsego County has 190 active public water systems, and Oneonta City is the largest of them by population served. Its population served is about 67 times the county average of 239 people per system, and accounts for 35% of the 45,410 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 Oneonta City is about 138% above 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. Surface water means the system draws its water from rivers, lakes, streams or reservoirs. 296 New York systems (3.6%) list surface water as their primary source.

Who owns and regulates Oneonta City?

EPA lists Oneonta City 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. 23 of the 190 active systems in Otsego County (12%) are also owned by a local government.

Does Oneonta City have drinking water violations?

EPA's records list 8 violations for this system; none is health-based, and the most recent began in December 2024. The violations listed here began between October 1999 and December 2024. By type: 5 monitoring and reporting, 2 public notice, recordkeeping or other and 1 monitoring. The contaminant or rule involved most often is Total trihalomethanes (TTHM) (3 of them). EPA lists 6 as resolved, 1 as archived and 1 as unaddressed. 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. Unaddressed means the violation is not resolved or archived and is not yet covered by formal enforcement.

Began	Violation	Contaminant or rule	Health-based	Status
2024-12-01	MonitoringMonitoring, Routine (RTCR) · code 3A	Revised Total Coliform Rulecode 8000	No	Resolved
2020-07-01	Monitoring and reportingMonitoring and Reporting (DBP) · code 27	Total trihalomethanes (TTHM)code 2950	No	Archived
2014-07-01	Monitoring and reportingMonitoring and Reporting (DBP) · code 27	Total trihalomethanes (TTHM)code 2950	No	Resolved
2014-07-01	Monitoring and reportingMonitoring and Reporting (DBP) · code 27	Haloacetic acids (HAA5)code 2456	No	Resolved
2011-04-01	Monitoring and reportingMonitoring and Reporting (DBP) · code 27	Haloacetic acids (HAA5)code 2456	No	Resolved
2011-04-01	Monitoring and reportingMonitoring and Reporting (DBP) · code 27	Total trihalomethanes (TTHM)code 2950	No	Resolved
2011-01-01	Public notice, recordkeeping or otherConsumer Confidence Report Inadequate Reporting · code 72	Consumer Confidence Rulecode 7000	No	Unaddressed
1999-10-19	Public notice, recordkeeping or otherConsumer Confidence Report Complete Failure to Report · code 71	Consumer Confidence Rulecode 7000	No	Resolved

All 8 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.

Oneonta City: frequently asked questions

Who runs Oneonta City?

Oneonta City (PWSID NY3800154) is a community water system owned by a local government. It is regulated by the NY state drinking water program.

How many people does Oneonta City serve?

Oneonta City reports serving 15,954 people through 3,750 service connections in Otsego County, New York.

Where does Oneonta City get its water?

EPA SDWIS lists this system's primary water source as surface water. Surface water means the system draws its water from rivers, lakes, streams or reservoirs.

Does Oneonta City have any drinking water violations?

EPA's records list 8 violations for this system; none is health-based, and the most recent began in December 2024. 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 Oneonta City'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 8 violations for this system; none is health-based, and the most recent began in December 2024. For current results, consult the system's annual water quality report, EPA ECHO, or the NY state drinking water program.

Where can I find Oneonta City's water quality report?

As a community water system, Oneonta City 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 Otsego County

Water system	County	Population served	Type	Source
Cooperstown Village	Otsego	1,926	Community	Surface water
Gilbert Lake State Pk	Otsego	1,320	Transient non-community	Groundwater
Richfield Springs Village	Otsego	1,200	Community	Surface water
Unadilla Village	Otsego	1,128	Community	Groundwater
Otego Village	Otsego	1,010	Community	Groundwater
Fox Care Center	Otsego	924	Non-transient non-community	Groundwater

Working with water-system records? Pro adds alerts, change history and CSV export ($49/mo); Enterprise adds full national files, the API and an MCP server for AI tools.

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, “Oneonta City, PWSID NY3800154, New York”, https://aquacensus.com/water-systems/new-york/oneonta-city-ny3800154 (data as of October 1, 2026).