City page · Texas
San Antonio, Texas tap water
San Antonio, Texas is associated with 5 active community water system(s) in EPA SDWIS data (systems may serve multiple places or buy/sell water). The largest listed system by population served is SAN ANTONIO WATER SYSTEM (2,643,729 people). Across those systems, this directory currently indexes 2 health-based violation record(s) in recent years. Private wells are not regulated like public systems and are not covered here.
Counties seen in EPA geo data: Bexar
Primary municipal water system
Texas EPA geographic extracts in this data quarter list county service areas, not city served. We feature the main City of San Antonio (or closest municipal) system first. Nearby MUDs and districts are listed separately below. Use your water bill/CCR to identify your exact PWSID.
| Utility | PWSID | Population | Primary source | Recent viol. indexed | Health-based |
|---|---|---|---|---|---|
| SAN ANTONIO WATER SYSTEMPrimary | TX0150018 | 2,643,729 | Purchased surface water | 1 | 0 |
Other water systems in the area — 4 nearby MUD/district/other systems
These systems are associated with San Antonio by name/record-city heuristics or serve nearby districts. They are sorted by population served.
| Utility | PWSID | Population | Primary source | Recent viol. indexed | Health-based |
|---|---|---|---|---|---|
| JBSA SAM HOUSTON | TX0150116 | 37,563 | Groundwater (wells) | 4 | 1 |
| JBSA RANDOLPH | TX0150115 | 10,949 | Groundwater (wells) | 1 | 0 |
| THE OAKS WSC | TX0150399 | 1,191 | Purchased surface water | 2 | 0 |
| BLUE SKIES OF TEXAS WEST | TX0150463 | 796 | Groundwater (wells) | 27 | 1 |
FAQs for San Antonio
Who provides tap water in San Antonio, TX?
The primary municipal system highlighted here is SAN ANTONIO WATER SYSTEM (PWSID TX0150018). San Antonio may also have nearby MUDs, districts, or supply corporations; your bill or CCR names the system that serves your address.
How do I read health-based violations?
Health-based violations involve MCL, MRDL, or treatment technique issues. A past violation does not automatically mean current water is unsafe—check status, dates, and your utility’s public notices/CCR.
What about apartments or purchased water?
Some systems buy water from wholesalers. Your retail utility is still responsible for delivering finished water and issuing the CCR for customers.
Where can I get official documents?
Search your utility name + “Consumer Confidence Report”, check Texas Commission on Environmental Quality (TCEQ) drinking water resources, and use EPA’s ECHO detailed facility report links on each utility page.
EPA & data citations
- EPA ECHO SDWA Data Downloads — data dictionary & summary
- County geography from
SDWA_GEOGRAPHIC_AREAS.csv; city pages use municipal-name heuristics (Texas city-served fields are sparse) - Active community systems from
SDWA_PUB_WATER_SYSTEMS.csv - See also: Methodology