Public water system · TX1090043
ActiveOak Hill Water System
At a glance
Oak Hill Water System (PWSID TX1090043) is an active community water system in Hill County, Texas. It reports serving 96 people through 32 service connections. Its primary water source is groundwater, and EPA lists it as privately owned. EPA's records list 3 violations for this system; none is health-based, and the most recent began in July 2025.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
96
Service connections
32
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Oak Hill Water System compare with other water systems in Hill County?
By EPA's size categories, Oak Hill Water System is a very small system (500 people or fewer). Hill County has 39 active public water systems. Its population served is well below the county average of 1,338 people per system, and accounts for 0.2% of the 52,177 people reported by systems filed under the county. Across Texas, the 7,078 active systems average 4,789 people each. Nationally, the average active community water system reports serving 6,703 people, so Oak Hill Water System 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. Texas has 4,594 active community water systems, 65% of the state's 7,078 active systems. Groundwater means the system draws its water from wells or springs fed by underground aquifers. 5,215 Texas systems (74%) list groundwater as their primary source.
Who owns and regulates Oak Hill Water System?
EPA lists Oak Hill Water System as privately owned. The TX state drinking water program is its primacy agency, the regulator with primary enforcement responsibility for the system under the Safe Drinking Water Act. 11 of the 39 active systems in Hill County (28%) are also privately owned.
Does Oak Hill Water System have drinking water violations?
EPA's records list 3 violations for this system; none is health-based, and the most recent began in July 2025. The violations listed here began between November 2007 and July 2025. By type: 1 reporting, 1 public notice, recordkeeping or other and 1 monitoring and reporting. The contaminants or rules involved are Lead and Copper Rule Revisions, Public Notice and Total coliform bacteria (TCR). EPA lists 3 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 |
|---|---|---|---|---|
| 2025-07-02 | ReportingNotification, Known or Potential LSL · code 4H | Lead and Copper Rule Revisionscode 5200 | No | Resolved |
| 2008-07-25 | Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75 | Public Noticecode 7500 | No | Resolved |
| 2007-11-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
All 3 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.
Oak Hill Water System: frequently asked questions
Who runs Oak Hill Water System?
Oak Hill Water System (PWSID TX1090043) is a community water system privately owned. It is regulated by the TX state drinking water program.
How many people does Oak Hill Water System serve?
Oak Hill Water System reports serving 96 people through 32 service connections in Hill County, Texas.
Where does Oak Hill Water System 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 Oak Hill Water System have any drinking water violations?
EPA's records list 3 violations for this system; none is health-based, and the most recent began in July 2025. 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 Oak Hill Water System'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 3 violations for this system; none is health-based, and the most recent began in July 2025. For current results, consult the system's annual water quality report, EPA ECHO, or the TX state drinking water program.
Where can I find Oak Hill Water System's water quality report?
As a community water system, Oak Hill Water System 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 Hill County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| City of Hillsboro | Hill | 8,867 | Community | Purchased surface water |
| Files Valley WSC | Hill | 4,776 | Community | Purchased surface water |
| Hill County WSC | Hill | 4,383 | Community | Purchased surface water |
| Cedar Creek Water System | Hill | 3,720 | Community | Groundwater |
| Post Oak Sud | Hill | 3,117 | Community | Purchased surface water |
| Woodrow Osceola WSC Blanton Well Plant 1 | Hill | 2,526 | 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, “Oak Hill Water System, PWSID TX1090043, Texas”, https://aquacensus.com/water-systems/texas/oak-hill-water-system-tx1090043 (data as of October 1, 2026).