Public water system · TX1630036
ActiveMedina Valley Water Supply Co
At a glance
Medina Valley Water Supply Co (PWSID TX1630036) is an active community water system in Medina County, Texas. It reports serving 255 people through 85 service connections. Its primary water source is groundwater, and EPA lists it as privately owned. EPA's records list 11 violations for this system; none is health-based, and the most recent began in December 2020.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
255
Service connections
85
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Medina Valley Water Supply Co compare with other water systems in Medina County?
By EPA's size categories, Medina Valley Water Supply Co is a very small system (500 people or fewer). Medina County has 32 active public water systems. Its population served is well below the county average of 2,764 people per system, and accounts for 0.3% of the 88,450 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 Medina Valley Water Supply Co 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 Medina Valley Water Supply Co?
EPA lists Medina Valley Water Supply Co 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. 12 of the 32 active systems in Medina County (38%) are also privately owned.
Does Medina Valley Water Supply Co have drinking water violations?
EPA's records list 11 violations for this system; none is health-based, and the most recent began in December 2020. The violations listed here began between August 2007 and December 2020. By type: 8 monitoring and reporting and 3 public notice, recordkeeping or other. The contaminant or rule involved most often is Public Notice (3 of them). EPA lists 11 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 |
|---|---|---|---|---|
| 2020-12-30 | Monitoring and reportingLead Consumer Notice · code 66 | Lead and Copper Rulecode 5000 | No | Resolved |
| 2019-06-27 | Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75 | Public Noticecode 7500 | No | Resolved |
| 2018-01-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Chlorinecode 0999 | No | Resolved |
| 2017-05-24 | Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75 | Public Noticecode 7500 | No | Resolved |
| 2016-10-01 | Monitoring and reportingFollow-up Or Routine LCR Tap M/R · code 52 | Lead and Copper Rulecode 5000 | No | Resolved |
| 2016-01-10 | Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75 | Public Noticecode 7500 | No | Resolved |
| 2015-09-01 | Monitoring and reportingMonitoring, Routine Minor (TCR) · code 24 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2014-01-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Haloacetic acids (HAA5)code 2456 | No | Resolved |
| 2014-01-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Total trihalomethanes (TTHM)code 2950 | No | Resolved |
| 2008-06-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2007-08-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
All 11 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.
Medina Valley Water Supply Co: frequently asked questions
Who runs Medina Valley Water Supply Co?
Medina Valley Water Supply Co (PWSID TX1630036) is a community water system privately owned. It is regulated by the TX state drinking water program.
How many people does Medina Valley Water Supply Co serve?
Medina Valley Water Supply Co reports serving 255 people through 85 service connections in Medina County, Texas.
Where does Medina Valley Water Supply Co 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 Medina Valley Water Supply Co have any drinking water violations?
EPA's records list 11 violations for this system; none is health-based, and the most recent began in December 2020. 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 Medina Valley Water Supply Co'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 11 violations for this system; none is health-based, and the most recent began in December 2020. For current results, consult the system's annual water quality report, EPA ECHO, or the TX state drinking water program.
Where can I find Medina Valley Water Supply Co's water quality report?
As a community water system, Medina Valley Water Supply Co 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 Medina County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Benton City WSC | Medina | 32,000 | Community | Groundwater |
| Yancey WSC | Medina | 12,186 | Community | Groundwater |
| City of Hondo | Medina | 11,044 | Community | Groundwater |
| East Medina County Sud Unit 1 | Medina | 6,153 | Community | Groundwater |
| City of Devine | Medina | 4,335 | Community | Groundwater |
| City of Castroville | Medina | 3,913 | 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, “Medina Valley Water Supply Co, PWSID TX1630036, Texas”, https://aquacensus.com/water-systems/texas/medina-valley-water-supply-co-tx1630036 (data as of October 1, 2026).