Public water system · NY3704361
ActiveOswego City
At a glance
Oswego City (PWSID NY3704361) is an active community water system in Oswego County, New York. It reports serving 29,400 people through 8,200 service connections. Its primary water source is surface water, and EPA lists it as owned by a local government. EPA's records list 4 violations for this system; all are health-based, and the most recent began in March 2015.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
29,400
Service connections
8,200
Primary source
SW
Surface water
System type
CWS
Community water system
System record
How does Oswego City compare with other water systems in Oswego County?
By EPA's size categories, Oswego City is a large system (10,001 to 100,000 people). Oswego County has 163 active public water systems, and Oswego City is the largest of them by population served. Its population served is about 48 times the county average of 614 people per system, and accounts for 29% of the 100,137 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 Oswego City is about 4.4 times 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 Oswego City?
EPA lists Oswego 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. 24 of the 163 active systems in Oswego County (15%) are also owned by a local government.
Does Oswego City have drinking water violations?
EPA's records list 4 violations for this system; all are health-based, and the most recent began in March 2015. The violations listed here began between January 2002 and March 2015. By type: 4 required treatment not met. The contaminant or rule involved most often is Stage 1 Disinfectants and Disinfection Byproducts Rule (2 of them). EPA lists 4 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 |
|---|---|---|---|---|
| 2015-03-01 | Required treatment not metTreatment Technique (SWTR and GWR) · code 41 | Long Term 2 Enhanced Surface Water Treatment Rulecode 0800 | Yes | Resolved |
| 2013-01-01 | Required treatment not metTreatment Technique No Certif. Operator · code 12 | Stage 1 Disinfectants and Disinfection Byproducts Rulecode 0400 | Yes | Resolved |
| 2012-01-01 | Required treatment not metTreatment Technique No Certif. Operator · code 12 | Stage 1 Disinfectants and Disinfection Byproducts Rulecode 0400 | Yes | Resolved |
| 2002-01-01 | Required treatment not metSingle Turbidity Exceed (Enhanced SWTR) · code 43 | Interim Enhanced Surface Water Treatment Rulecode 0300 | Yes | Resolved |
All 4 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.
Oswego City: frequently asked questions
Who runs Oswego City?
Oswego City (PWSID NY3704361) is a community water system owned by a local government. It is regulated by the NY state drinking water program.
How many people does Oswego City serve?
Oswego City reports serving 29,400 people through 8,200 service connections in Oswego County, New York.
Where does Oswego 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 Oswego City have any drinking water violations?
EPA's records list 4 violations for this system; all are health-based, and the most recent began in March 2015. 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 Oswego 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 4 violations for this system; all are health-based, and the most recent began in March 2015. For current results, consult the system's annual water quality report, EPA ECHO, or the NY state drinking water program.
Where can I find Oswego City's water quality report?
As a community water system, Oswego 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 Oswego County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Fulton City | Oswego | 16,600 | Community | Purchased surface water |
| Scriba Wd (Oswego) | Oswego | 9,044 | Community | Purchased surface water |
| Brennan Beach Rv Resort | Oswego | 6,020 | Transient non-community | Purchased groundwater |
| Richland Town Pws | Oswego | 3,950 | Community | Groundwater |
| Fulton Speedway LLC | Oswego | 3,000 | Transient non-community | Groundwater under influence of surface water |
| Pulaski Village | Oswego | 2,398 | 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, “Oswego City, PWSID NY3704361, New York”, https://aquacensus.com/water-systems/new-york/oswego-city-ny3704361 (data as of October 1, 2026).