Population Served
20.8K
Service Connections
6.9K
Total Violations
401
Health-Based Violations
192
Lead & Copper Data
Lead Level
Caution1.60 ppb
Action Level: 15 ppb (EPA) · Sampled: 2025-06-30
015 ppb action level
Copper Level
No copper sampling data available
System Details
- Water Source
- Purchased Surface Water
- System Type
- Community Water System
- City
- SAN MARCOS
- ZIP Code
- 78666-2100
- Counties Served
- Guadalupe
- Cities Served
- San Marcos
- Open Violations
- 0
- State
- Texas
Violation Summary
401
Total Violations
192
Health-Based
0
Open Now
Most recent violation: 2019-12-30
Explore Texas Water Quality
See all water systems, lead data, and violation trends for Texas.
Data source: EPA ECHO SDWIS Bulk Download (Jan 2026). PWSID: TX0940015.SafeWater Home