Public water system · TX1630035

Active

Old Hwy 90 Water Service

At a glance

Old Hwy 90 Water Service (PWSID TX1630035) is an active community water system in Medina County, Texas. It reports serving 1,215 people through 405 service connections. Its primary water source is groundwater, and EPA lists it as privately owned. EPA's records list 10 violations for this system; none is health-based, and the most recent began in January 2018.

Dataset updated October 2026 . Source: EPA SDWIS/ECHO public records.

Population served

1,215

Service connections

405

Primary source

Groundwater

System type

CWS

Community water system

System record

PWSIDTX1630035

System typeCommunity water system

Activity statusActive

Population served1,215

Service connections405

Primary water sourceGroundwater

Owner typePrivate

Primacy agencyTX state drinking water program

City served—

StateTexas

ZIP—

CountyMedina County

How does Old Hwy 90 Water Service compare with other water systems in Medina County?

By EPA's size categories, Old Hwy 90 Water Service is a small system (501 to 3,300 people). Medina County has 32 active public water systems. Its population served is about 56% below the county average of 2,764 people per system, and accounts for 1.4% 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 Old Hwy 90 Water Service 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 Old Hwy 90 Water Service?

EPA lists Old Hwy 90 Water Service 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 Old Hwy 90 Water Service have drinking water violations?

EPA's records list 10 violations for this system; none is health-based, and the most recent began in January 2018. The violations listed here began between January 2006 and January 2018. By type: 8 monitoring and reporting and 2 public notice, recordkeeping or other. The contaminant or rule involved most often is Lead and Copper Rule (3 of them). EPA lists 10 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
2018-01-30	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
2013-04-01	Monitoring and reportingMonitoring and Reporting (DBP) · code 27	Chlorinecode 0999	No	Resolved
2013-01-01	Monitoring and reportingMonitoring and Reporting (DBP) · code 27	Chlorinecode 0999	No	Resolved
2012-01-01	Monitoring and reportingMonitoring, Routine Major (TCR) · code 23	Total coliform bacteria (TCR)code 3100	No	Resolved
2011-10-01	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
2008-07-25	Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75	Public Noticecode 7500	No	Resolved
2007-12-01	Monitoring and reportingMonitoring, Routine Minor (TCR) · code 24	Total coliform bacteria (TCR)code 3100	No	Resolved
2006-01-01	Public notice, recordkeeping or otherConsumer Confidence Report Inadequate Reporting · code 72	Consumer Confidence Rulecode 7000	No	Resolved

All 10 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.

Old Hwy 90 Water Service: frequently asked questions

Who runs Old Hwy 90 Water Service?

Old Hwy 90 Water Service (PWSID TX1630035) is a community water system privately owned. It is regulated by the TX state drinking water program.

How many people does Old Hwy 90 Water Service serve?

Old Hwy 90 Water Service reports serving 1,215 people through 405 service connections in Medina County, Texas.

Where does Old Hwy 90 Water Service 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 Old Hwy 90 Water Service have any drinking water violations?

EPA's records list 10 violations for this system; none is health-based, and the most recent began in January 2018. 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 Old Hwy 90 Water Service'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 10 violations for this system; none is health-based, and the most recent began in January 2018. For current results, consult the system's annual water quality report, EPA ECHO, or the TX state drinking water program.

Where can I find Old Hwy 90 Water Service's water quality report?

As a community water system, Old Hwy 90 Water Service 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, “Old Hwy 90 Water Service, PWSID TX1630035, Texas”, https://aquacensus.com/water-systems/texas/old-hwy-90-water-service-tx1630035 (data as of October 1, 2026).