Water Quality: San Marcos, TX
5 water systems • 137,288 people served
Multiple Health ViolationsWater Quality Summary
San Marcos has 96 health-based violations on record, meaning one or more contaminants were found above EPA-established safe levels. Contaminants involved: Bromate, Disinfection Byproducts, Fecal Coliform, TTHM, Total Haloacetic Acids (HAA5). In total, 313 violations are on record for 5 water systems serving 137,288 people.
Contaminants Found
Water Systems Serving San Marcos
| System Name | PWSID | Source | Population | Violations |
|---|---|---|---|---|
| CITY OF SAN MARCOS | TX1050001 | Surface Water | 72,970 | 10 |
| TEXAS STATE UNIVERSITY - SAN MARCOS | TX1050003 | Groundwater | 43,552 | 16 |
| CRYSTAL CLEAR SUD | TX0940015 | Surface Water | 20,766 | 287 |
| ALLIANCE REGIONAL WATER AUTHORITY 1B | TX0280027 | Groundwater | 0 | 0 |
| ALLIANCE REGIONAL WATER AUTHORITY | TX1050197 | Surface Water | 0 | 0 |
Concerned About Your Water?
A home water filter can remove common contaminants. NSF-certified filters are tested against EPA standards.
Consider a reverse osmosis system for comprehensive filtration or a carbon filter for basic improvement.
Data Sources
Drinking water violation data from the EPA Safe Drinking Water Information System (SDWIS). Data includes all recorded violations for active community water systems.