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Medina County, Texas — public water systems

At a glance

32 active public water systems are filed under Medina County, Texas in EPA's SDWIS records, together reporting 88,450 people served. The largest is Benton City WSC, which reports serving 32,000 people. 28 are community water systems serving people where they live; the other 4 are non-community systems, such as schools, workplaces, campgrounds and gas stations with their own supply.

Dataset updated . Source: EPA SDWIS/ECHO, refreshed quarterly.

Active systems

32

Population served

88.5K

Community systems

28

Groundwater share

100%

How does Medina County compare with other Texas counties?

Medina County has the 46th-most active public water systems among the 309 counties listed for active Texas systems in EPA records; among the 234 with 3 or more systems, the median has 12. Its systems report 88,450 people served in total, the 46th-largest county figure in the state and 0.3% of the statewide total. The average system here reports serving 2,764 people, about 42% below the Texas average of 4,789. Population figures are what each system reports; people served by more than one system, such as a wholesaler and the town that buys from it, are counted by each.

Where does Medina County's drinking water come from?

By primary water source, Medina County's active systems draw on groundwater (32, 100%). Overall, all rely mainly on groundwater (including purchased groundwater) and none on surface water, compared with 78% and 21% across Texas. Groundwater means the system draws its water from wells or springs fed by underground aquifers. The county's largest system, Benton City WSC, draws primarily on groundwater.

What kinds of water systems operate in Medina County?

Medina County's active systems break down as 28 community systems (88%), 3 non-transient non-community systems (9.4%) and 1 transient non-community systems (3.1%). 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. A non-transient non-community water system regularly serves at least 25 of the same people for more than six months a year, but not where they live. Schools, factories, office buildings and hospitals with their own supply are typical examples. A transient non-community water system serves places where people do not stay long, such as gas stations and campgrounds, and regularly serves at least 25 people a day for at least 60 days a year. EPA lists their owner types as local government (63%) and private (38%).

Water systems in Medina County

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Active public water systems in Medina County, Texas
#Water systemCountyPopulation servedTypeSource
1Benton City WSCMedina32,000CommunityGroundwater
2Yancey WSCMedina12,186CommunityGroundwater
3City of HondoMedina11,044CommunityGroundwater
4East Medina County Sud Unit 1Medina6,153CommunityGroundwater
5City of DevineMedina4,335CommunityGroundwater
6City of CastrovilleMedina3,913CommunityGroundwater
7East Medina County Sud Unit 2Medina2,505CommunityGroundwater
8Medina Valley High SchoolMedina2,501Non-transient non-communityGroundwater
9West Medina WSCMedina1,683CommunityGroundwater
10City of La CosteMedina1,488CommunityGroundwater
11East Medina County Sud Unit 3Medina1,365CommunityGroundwater
12City of NataliaMedina1,336CommunityGroundwater
13Old Hwy 90 Water ServiceMedina1,215CommunityGroundwater
14Medina River West WSCMedina1,158CommunityGroundwater
15West View SubdivisionMedina900CommunityGroundwater
16Medina County Wcid 2Medina756CommunityGroundwater
17East Medina County Sud Unit 4Medina483CommunityGroundwater
18Dancing BearMedina444CommunityGroundwater
19Highway 90 Ranch WSCMedina412CommunityGroundwater
20Country View EstatesMedina330CommunityGroundwater
21Gusville Mobile Home ParkMedina273CommunityGroundwater
22Medina Valley Water Supply CoMedina255CommunityGroundwater
23Summit RidgeMedina252CommunityGroundwater
24Old Hwy 90 N Ridge W SystemMedina246CommunityGroundwater
25Valley Mobile Home PropertiesMedina219CommunityGroundwater
26Rio Medina EstatesMedina201CommunityGroundwater
27New Alsace WSCMedina201CommunityGroundwater
28Valentine RanchMedina195CommunityGroundwater
29Rocky Creek Subdivision Water SystemMedina156CommunityGroundwater
30Castroville AirportMedina150Transient non-communityGroundwater
31Zinsmeyer Trailer ParkMedina50Non-transient non-communityGroundwater
32Martin Marietta Medina County QuarryMedina45Non-transient non-communityGroundwater

Medina County water systems: frequently asked questions

How many public water systems are in Medina County, Texas?

EPA's SDWIS records file 32 active public water systems under Medina County, Texas: 28 community systems (88%), 3 non-transient non-community systems (9.4%) and 1 transient non-community systems (3.1%).

Who supplies drinking water in Medina County, TX?

The largest community water systems filed under Medina County are Benton City WSC (32,000 people served), Yancey WSC (12,186 people served) and City of Hondo (11,044 people served). Which system serves a particular address depends on its service area, which EPA's SDWIS records do not include; a water bill or the local utility can confirm it.

Does Medina County's drinking water come from groundwater or surface water?

Of the 32 active public water systems in Medina County, all draw mainly on groundwater and none on surface water, counting purchased supplies. The largest system, Benton City WSC, uses groundwater.

Where can I find a water quality report for Medina County?

Each community water system must deliver an annual water quality report, called a Consumer Confidence Report, to its customers by July 1, covering the previous calendar year. 28 community systems are filed under Medina County, so the report to look for is the one from the system that supplies your address.

How can I check violations for a water system in Medina County?

Open the system's profile from the list on this page. Each profile shows the most recent Safe Drinking Water Act violations in EPA's records, with plain-English labels and whether each one is resolved. For current compliance status, EPA ECHO is the primary source.

More Texas water systems

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, “Public water systems in Medina County, Texas”, https://aquacensus.com/water-systems/texas/medina (data as of October 1, 2026).