Public water system · TX2470007
ActiveThree Oaks WSC
At a glance
Three Oaks WSC (PWSID TX2470007) is an active community water system in Wilson County, Texas. It reports serving 2,007 people through 669 service connections. Its primary water source is groundwater, and EPA lists it as owned by a local government. EPA's records list 2 violations for this system; none is health-based, and the most recent began in December 2025.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
2,007
Service connections
669
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Three Oaks WSC compare with other water systems in Wilson County?
By EPA's size categories, Three Oaks WSC is a small system (501 to 3,300 people). Wilson County has 14 active public water systems. Its population served is about half of the county average of 3,999 people per system, and accounts for 3.6% 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 Three Oaks WSC 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 Three Oaks WSC?
EPA lists Three Oaks 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 Three Oaks WSC have drinking water violations?
EPA's records list 2 violations for this system; none is health-based, and the most recent began in December 2025. The violations listed here began between September 2016 and December 2025. By type: 2 monitoring and reporting. The contaminant or rule involved most often is Lead and Copper Rule (2 of them). EPA lists 2 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 |
|---|---|---|---|---|
| 2025-12-30 | Monitoring and reportingLead Consumer Notice · code 66 | Lead and Copper Rulecode 5000 | No | Resolved |
| 2016-09-29 | Monitoring and reportingLead Consumer Notice · code 66 | Lead and Copper Rulecode 5000 | No | Resolved |
All 2 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.
Three Oaks WSC: frequently asked questions
Who runs Three Oaks WSC?
Three Oaks WSC (PWSID TX2470007) is a community water system owned by a local government. It is regulated by the TX state drinking water program.
How many people does Three Oaks WSC serve?
Three Oaks WSC reports serving 2,007 people through 669 service connections in Wilson County, Texas.
Where does Three Oaks 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 Three Oaks WSC have any drinking water violations?
EPA's records list 2 violations for this system; none is 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 Three Oaks 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 2 violations for this system; none is 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 Three Oaks WSC's water quality report?
As a community water system, Three Oaks 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 |
| Oak Hills WSC | Wilson | 6,225 | Community | Groundwater |
| Sunko WSC | Wilson | 5,064 | Community | Groundwater |
| Picosa WSC | Wilson | 3,210 | Community | Groundwater |
| City of Poth | Wilson | 2,994 | 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, “Three Oaks WSC, PWSID TX2470007, Texas”, https://aquacensus.com/water-systems/texas/three-oaks-wsc-tx2470007 (data as of October 1, 2026).