Public water system · TX2470009
ActiveOak Hills WSC
At a glance
Oak Hills WSC (PWSID TX2470009) is an active community water system in Wilson County, Texas. It reports serving 6,225 people through 2,075 service connections. Its primary water source is groundwater, and EPA lists it as owned by a local government. EPA's records list one violation for this system; it is not health-based, and the most recent began in December 2025.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
6,225
Service connections
2,075
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Oak Hills WSC compare with other water systems in Wilson County?
By EPA's size categories, Oak Hills WSC is a medium system (3,301 to 10,000 people). Wilson County has 14 active public water systems, and Oak Hills WSC is the 3rd-largest of them by population served. Its population served is about 56% above the county average of 3,999 people per system, and accounts for 11% of the 55,988 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 Hills WSC is roughly in line with 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 Hills WSC?
EPA lists Oak Hills WSC as owned by a local government. 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 14 active systems in Wilson County (79%) are also owned by a local government.
Does Oak Hills WSC have drinking water violations?
EPA's records list one violation for this system; it is not health-based, and the most recent began in December 2025. By type: 1 monitoring and reporting. The contaminant or rule involved is Lead and Copper Rule. EPA lists 1 as unaddressed. 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 |
|---|---|---|---|---|
| 2025-12-30 | Monitoring and reportingLead Consumer Notice · code 66 | Lead and Copper Rulecode 5000 | No | Unaddressed |
The one violation in EPA's records.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 Hills WSC: frequently asked questions
Who runs Oak Hills WSC?
Oak Hills WSC (PWSID TX2470009) is a community water system owned by a local government. It is regulated by the TX state drinking water program.
How many people does Oak Hills WSC serve?
Oak Hills WSC reports serving 6,225 people through 2,075 service connections in Wilson County, Texas.
Where does Oak Hills WSC 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 Hills WSC have any drinking water violations?
EPA's records list one violation for this system; it is not health-based, and the most recent began in December 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 Hills WSC'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 one violation for this system; it is not health-based, and the most recent began in December 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 Hills WSC's water quality report?
As a community water system, Oak Hills WSC 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 Wilson County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Ss WSC | Wilson | 20,826 | Community | Groundwater |
| City of Floresville | Wilson | 8,306 | Community | Groundwater |
| Sunko WSC | Wilson | 5,064 | Community | Groundwater |
| Picosa WSC | Wilson | 3,210 | Community | Groundwater |
| City of Poth | Wilson | 2,994 | Community | Groundwater |
| City of La Vernia | Wilson | 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 Hills WSC, PWSID TX2470009, Texas”, https://aquacensus.com/water-systems/texas/oak-hills-wsc-tx2470009 (data as of October 1, 2026).