County · Texas

Bexar County, Texas: drinking water records

Name: Drinking water records for Bexar County, Texas
Creator: U.S. Environmental Protection Agency
License: https://www.usa.gov/government-works

Explore EPA records for 42 community water systems across 70 ZIP codes in Bexar County, then find water-testing resources and available recent monitoring-station readings.

In focus42Community water systems

Public records. Clearer context.

Data as of EPA UCMR 5 final release, August 2026 (file dated Aug 28, 2026) · EPA SDWIS 2026Q2 (file dated Jul 9, 2026). How we build these pages

Drinking-water records

EPA survey and compliance records are historical reports. UCMR 5 results are available for 18 of the 42 listed systems in this snapshot. A system with no reported PFAS detection is not a test of every tap or every contaminant.

systems in EPA's PFAS survey

systems where PFAS was found

systems at or above the PFOA or PFOS limit, on the yearly-average basis EPA uses

systems that have reached the lead action level

systems with a health-based violation since 2016

System population figures are summed from EPA registry records and can overlap where wholesalers and retail systems serve the same people. They are not a Census county-population estimate.

Water systems in this county

All 42 active community systems in the available county records, sorted by record completeness. Scroll the table to explore more systems.

Water system	People served	PFAS survey results	PFAS found	Health-based violations	Lead, 9 in 10 homes at or below
Jbsa Sam Houston TX0150116	37,563	180	0	1	1 ppbbelow the action level
Atascosa Rural WSC TX0150040	13,857	180	0	14	2 ppbbelow the action level
Jbsa Randolph TX0150115	10,949	180	0	2	2 ppbbelow the action level
City of Alamo Heights TX0150039	7,357	360	0	1	2.8 ppbbelow the action level
San Antonio Water System TX0150018	2,643,729	2,730	3	0	1.6 ppbbelow the action level
City of Converse TX0150047	29,709	360	0	0	0.5 ppbbelow the action level
East Central SUD TX0150138	26,137	240	0	0	1.5 ppbbelow the action level
Jbsa Lackland TX0150114	20,907	240	0	0	0 ppbbelow the action level
City of Universal City TX0150009	20,119	180	0	0	0.5 ppbbelow the action level
City of Selma TX0150492	11,418	180	0	0	0 ppbbelow the action level
Fair Oaks Ranch Utilities TX0150216	9,768	360	0	0	2.2 ppbbelow the action level
City of Live Oak TX0150068	8,724	240	0	0	1.5 ppbbelow the action level
Bexar County WCID 10 Windcrest TX0150106	8,154	240	0	0	1.4 ppbbelow the action level
City of Kirby TX0150010	8,142	120	0	0	2 ppbbelow the action level
City of Leon Valley TX0150178	7,794	120	1	0	1 ppbbelow the action level
City of Elmendorf TX0150048	4,221	120	0	0	1.4 ppbbelow the action level
Jbsa Medina TX0150275	3,650	120	0	0	0 ppbbelow the action level
City of Shavano Park TX0150092	2,200	0	0	4	1.3 ppbbelow the action level
Coolcrest Water System TX0150046	951	120	0	0	1.4 ppbbelow the action level
Blue Skies of Texas West TX0150463	796	0	0	1	0.5 ppbbelow the action level
Grey Forest Water System TX0150514	663	0	0	1	1.5 ppbbelow the action level
Pioneer Estates TX0150420	320	0	0	1	0 ppbbelow the action level
North Breeze MHP TX0150208	123	0	0	1	3 ppbbelow the action level
Lazy Acres Trailer Park TX0150186	105	0	0	1	0 ppbbelow the action level
Oak Hill Acres Mobile Home Subdivision TX0150156	81	0	0	1	0 ppbbelow the action level
Evetts Apartments TX0150238	51	0	0	1	0 ppbbelow the action level
Cordi Marian Villa TX0150414	48	0	0	1	0 ppbbelow the action level
The Oaks WSC TX0150399	1,191	0	0	0	0 ppbbelow the action level
Oak North Mobile Homes Estates TX0150135	1,059	0	0	0	0.6 ppbbelow the action level
East Central SUD Palm Park Water TX0150082	882	0	0	0	0.5 ppbbelow the action level
Country Springs Water TX0150421	768	0	0	0	1.6 ppbbelow the action level
Stagecoach Hills TX0150096	489	0	0	0	1 ppbbelow the action level
Estates Utility Co Stonegate TX0150431	276	0	0	0	5.9 ppbbelow the action level
Cadillac Water TX0150247	252	0	0	0	2.4 ppbbelow the action level
Bavarian Hills TX0150235	207	0	0	0	0.9 ppbbelow the action level
Camp Stanley TX0150117	133	0	0	0	3 ppbbelow the action level
Little Joes Ice House & Trailer Park TX0150256	106	0	0	0	0 ppbbelow the action level
Nico Tyme Water Coop TX0150486	96	0	0	4	not reported
Enchanted Oaks WSC TX0150433	66	0	0	0	2.8 ppbbelow the action level
Water Exploration Stein Roger Well Field TX0150562	0	0	0	1	not reported
Dym Tract Water System TX0150599	0	0	0	0	not reported
Flagstone Water Distribution System TX0150577	0	0	0	0	not reported

USGS · Monitoring stations

The water, more recently.

Available station readings in Bexar County, Texas. Each measurement keeps its time, unit and original source.

These readings describe water at a monitoring station. They do not test your tap, measure PFAS or lead, or determine whether water is safe to drink or swim in.

Recent observations load when this section comes into view.

How these readings update

We check for updates every 10 minutes while this section is visible and show supported observations from the last 48 hours. The time beside a reading is when USGS measured it; the checked time is when our service retrieved the response. We mark a reading more than 6 hours old as older. Provisional observations can change after USGS review. A missing reading does not mean zero or clean water.

Temperature, pH, dissolved oxygen, turbidity, conductivity, streamflow and water level are shown only where a station reports them. Different measurements have different units and sampling intervals. USGS data and documentation.

Your next step

Water testing, reports & local help.

Use these official directories to find your drinking-water agency, a certified laboratory and public water records. We have not yet added an individually reviewed local resource list for this county.

Official national directories

Water testing

Find your state’s private-well program

EPA’s state directory points well owners to local program information. Services and eligibility vary by state and county.

U.S. Environmental Protection Agency
Source reviewed 2026-09-15 · Source updated 2026-08-05

Water testing

Find a certified drinking-water laboratory

Use EPA’s directory to reach your state’s laboratory certification program. EPA does not provide on-request testing of residential drinking water.

U.S. Environmental Protection Agency
Source reviewed 2026-09-15 · Source updated 2026-08-11

Public records

Find your utility’s Consumer Confidence Report

EPA links to community water-system reports and explains how to read them. Look for your actual supplier rather than assuming every address in a county shares one system.

U.S. Environmental Protection Agency
Source reviewed 2026-09-15 · Source updated 2026-09-09

Public records

Explore USGS water observations

Find current and historical observations from USGS monitoring locations, including available stream, lake, and groundwater data. Measurements vary by station and do not replace a test of your household water.

U.S. Geological Survey
Source reviewed 2026-09-15

A county overview cannot identify every property’s water provider. If you use a public water system, confirm its name on your bill and request its annual Consumer Confidence Report. Private wells need their own testing; public-system records do not describe a private well.

Understand water testing and laboratory reports

Resource descriptions are compiled by Tap Water Lookup. Review dates describe our source check, not a new water sample. How we review sources · Suggest a correction

Explore your area

Local coverage in Bexar County

70ZIP areas in this overview

Explore the water-system records, recent station readings and testing resources on this county page. They describe the systems and stations identified in each section; they are not a separate water test for every community.

Towns and communities

China Grove
Converse
Cross Mountain
Lackland AFB
Macdona
Randolph AFB
San Antonio
Schertz
Shavano Park
St. Hedwig
Timberwood Park
Universal City
Windcrest

Explore water-system records Find water-testing resources

View ZIP areas and understand coverage

78002Macdona
78023San Antonio
78073San Antonio
78101St. Hedwig
78109Converse
78112San Antonio
78148Universal City
78150Randolph AFB
78152St. Hedwig
78154Schertz
78201San Antonio
78202San Antonio
78203San Antonio
78204San Antonio
78205San Antonio
78207San Antonio
78208San Antonio
78209San Antonio
78210San Antonio
78211San Antonio
78212San Antonio
78213San Antonio
78214San Antonio
78215San Antonio
78216San Antonio
78217San Antonio
78218San Antonio
78219San Antonio
78220San Antonio
78221San Antonio
78222San Antonio
78223San Antonio
78224San Antonio
78225San Antonio
78226San Antonio
78227San Antonio
78228San Antonio
78229San Antonio
78230San Antonio
78231Shavano Park
78232San Antonio
78233San Antonio
78234San Antonio
78235San Antonio
78236Lackland AFB
78237San Antonio
78238San Antonio
78239Windcrest
78240San Antonio
78242San Antonio
78243San Antonio
78244San Antonio
78245San Antonio
78247San Antonio
78248San Antonio
78249San Antonio
78250San Antonio
78251San Antonio
78252San Antonio
78253San Antonio
78254San Antonio
78255Cross Mountain
78256San Antonio
78257San Antonio
78258San Antonio
78259San Antonio
78260Timberwood Park
78261San Antonio
78263China Grove
78264San Antonio

These Census ZIP Code Tabulation Areas are grouped here by their largest county overlap. A ZIP area can cross county lines and contain several water suppliers or private wells. Place labels reflect Census geography, not verified postal city names or utility service boundaries.

Records for these areas are currently presented in this county overview rather than individual ZIP reports. An unpublished report does not mean there are no water records. Confirm your supplier on your water bill; if you use a private well, testing your own well is the relevant next step.

Beyond this county page

Keep reading. Compare nearby.

PFASChoosing a PFAS filterPFAS was found in 2 of the 18 systems EPA surveyed here. See how to check a filter’s certified PFAS reduction.LeadChoosing a lead filter4 systems here have reached the lead action level. See how to check a filter’s lead-reduction certification.Your utilityFind your annual water reportConfirm the supplier on your bill, then read its Consumer Confidence Report for local results.

Counties near Bexar County

All Texas counties

Sources and scope

EPA UCMR 5 occurrence data, samples collected 2023-01-03 – 2026-06-17, final release, August 2026 (file dated Aug 28, 2026); EPA SDWIS via ECHO, 2026Q2 extract (file dated Jul 9, 2026); EPA service-area boundaries v3.0; Census 2020 ZCTAs. Database prepared 2026-09-03.

Counts cover the systems that report this county to EPA. A water system may cross county lines. "Found" means at least one result at or above the laboratory reporting level; it is not a compliance finding.

Compiled by Tap Water Lookup from the sources identified on this page. Read the methodology and review process.