Public water system · OH0902312
ActiveOxford City Pws
At a glance
Oxford City Pws (PWSID OH0902312) is an active community water system in Butler County, Ohio. It reports serving 24,000 people through 4,982 service connections. Its primary water source is groundwater, and EPA lists it as owned by a local government. EPA's records list 4 violations for this system; 2 are health-based, and the most recent began in April 2005.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
24,000
Service connections
4,982
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Oxford City Pws compare with other water systems in Butler County?
By EPA's size categories, Oxford City Pws is a large system (10,001 to 100,000 people). Butler County has 20 active public water systems, and Oxford City Pws is the 6th-largest of them by population served. Its population served is about 27% above the county average of 18,928 people per system, and accounts for 6.3% of the 378,564 people reported by systems filed under the county. Across Ohio, the 3,854 active systems average 2,767 people each. Nationally, the average active community water system reports serving 6,703 people, so Oxford City Pws is about 3.6 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. Ohio has 1,028 active community water systems, 27% of the state's 3,854 active systems. Groundwater means the system draws its water from wells or springs fed by underground aquifers. 3,446 Ohio systems (89%) list groundwater as their primary source.
Who owns and regulates Oxford City Pws?
EPA lists Oxford City Pws as owned by a local government. The OH state drinking water program is its primacy agency, the regulator with primary enforcement responsibility for the system under the Safe Drinking Water Act. 8 of the 20 active systems in Butler County (40%) are also owned by a local government.
Does Oxford City Pws have drinking water violations?
EPA's records list 4 violations for this system; 2 are health-based, and the most recent began in April 2005. The violations listed here began between September 1997 and April 2005. By type: 2 monitoring and reporting and 2 contaminant level above the legal limit. The contaminant or rule involved most often is Total coliform bacteria (TCR) (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 |
|---|---|---|---|---|
| 2005-04-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Haloacetic acids (HAA5)code 2456 | No | Resolved |
| 2005-04-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Total trihalomethanes (TTHM)code 2950 | No | Resolved |
| 1997-09-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Acute (TCR) · code 21 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 1997-09-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | 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.
Oxford City Pws: frequently asked questions
Who runs Oxford City Pws?
Oxford City Pws (PWSID OH0902312) is a community water system owned by a local government. It is regulated by the OH state drinking water program.
How many people does Oxford City Pws serve?
Oxford City Pws reports serving 24,000 people through 4,982 service connections in Butler County, Ohio.
Where does Oxford City Pws get its water?
EPA SDWIS lists this system's primary water source as groundwater. Groundwater means the system draws its water from wells or springs fed by underground aquifers.
Does Oxford City Pws have any drinking water violations?
EPA's records list 4 violations for this system; 2 are health-based, and the most recent began in April 2005. 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 Oxford City Pws' 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; 2 are health-based, and the most recent began in April 2005. For current results, consult the system's annual water quality report, EPA ECHO, or the OH state drinking water program.
Where can I find Oxford City Pws' water quality report?
As a community water system, Oxford City Pws 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 Butler County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Butler Co. Water District 2 Pws | Butler | 116,572 | Community | Purchased surface water |
| Hamilton Public Water System | Butler | 62,447 | Community | Groundwater |
| Middletown City Pws | Butler | 51,229 | Community | Groundwater |
| Fairfield City Pws | Butler | 44,907 | Community | Groundwater |
| Southwest Regional Water District | Butler | 42,856 | Community | Groundwater |
| Monroe City Pws | Butler | 15,600 | 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, “Oxford City Pws, PWSID OH0902312, Ohio”, https://aquacensus.com/water-systems/ohio/oxford-city-pws-oh0902312 (data as of October 1, 2026).