Public water system · TX1050131
ActiveLa Ventana Water Supply System
At a glance
La Ventana Water Supply System (PWSID TX1050131) is an active community water system in Hays County, Texas. It reports serving 747 people through 253 service connections. Its primary water source is groundwater, and EPA lists it as privately owned. EPA's records list 9 violations for this system; 1 is health-based, and the most recent began in July 2025.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
747
Service connections
253
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does La Ventana Water Supply System compare with other water systems in Hays County?
By EPA's size categories, La Ventana Water Supply System is a small system (501 to 3,300 people). Hays County has 118 active public water systems. Its population served is well below the county average of 2,597 people per system, and accounts for 0.2% of the 306,428 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 La Ventana Water Supply 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 La Ventana Water Supply System?
EPA lists La Ventana Water Supply 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. 87 of the 118 active systems in Hays County (74%) are also privately owned.
Does La Ventana Water Supply System have drinking water violations?
EPA's records list 9 violations for this system; 1 is health-based, and the most recent began in July 2025. The violations listed here began between October 2008 and July 2025. By type: 5 monitoring and reporting, 2 public notice, recordkeeping or other, 1 reporting and 1 required treatment not met. The contaminant or rule involved most often is Lead and Copper Rule (3 of them). EPA lists 7 as resolved and 2 as unaddressed. 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. 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 |
|---|---|---|---|---|
| 2025-07-01 | Public notice, recordkeeping or otherConsumer Confidence Report Inadequate Reporting · code 72 | Consumer Confidence Rulecode 7000 | No | Resolved |
| 2024-10-17 | ReportingLSL Reporting · code 4G | Lead and Copper Rule Revisionscode 5200 | No | Resolved |
| 2024-10-17 | Required treatment not metLSL Inventory · code 2E | Lead and Copper Rule Revisionscode 5200 | Yes | Resolved |
| 2023-03-23 | Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75 | Public Noticecode 7500 | No | Unaddressed |
| 2021-11-05 | Monitoring and reportingMonitoring, Source Water (GWR) · code 34 | E. colicode 3014 | No | Unaddressed |
| 2014-12-30 | Monitoring and reportingLead Consumer Notice · code 66 | Lead and Copper Rulecode 5000 | No | Resolved |
| 2013-10-01 | Monitoring and reportingFollow-up Or Routine LCR Tap M/R · code 52 | Lead and Copper Rulecode 5000 | No | Resolved |
| 2012-10-01 | Monitoring and reportingFollow-up Or Routine LCR Tap M/R · code 52 | Lead and Copper Rulecode 5000 | No | Resolved |
| 2008-10-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Chlorinecode 0999 | No | Resolved |
All 9 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.
La Ventana Water Supply System: frequently asked questions
Who runs La Ventana Water Supply System?
La Ventana Water Supply System (PWSID TX1050131) is a community water system privately owned. It is regulated by the TX state drinking water program.
How many people does La Ventana Water Supply System serve?
La Ventana Water Supply System reports serving 747 people through 253 service connections in Hays County, Texas.
Where does La Ventana Water Supply 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 La Ventana Water Supply System have any drinking water violations?
EPA's records list 9 violations for this system; 1 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 La Ventana Water Supply 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 9 violations for this system; 1 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 La Ventana Water Supply System's water quality report?
As a community water system, La Ventana Water Supply 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 Hays County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| City of San Marcos | Hays | 72,970 | Community | Surface water |
| City of Kyle | Hays | 52,000 | Community | Purchased surface water |
| Texas State University - San Marcos | Hays | 43,552 | Community | Groundwater |
| Goforth Sud | Hays | 34,893 | Community | Purchased surface water |
| County Line Sud | Hays | 19,609 | Community | Purchased surface water |
| City of Buda | Hays | 13,830 | 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, “La Ventana Water Supply System, PWSID TX1050131, Texas”, https://aquacensus.com/water-systems/texas/la-ventana-water-supply-system-tx1050131 (data as of October 1, 2026).