B68/100
SAN ANTONIO WATER SYSTEM — Water Quality Report 2026
Serving 2,113,151 people · Texas
Water Source
Purchased Surface Water
County
—
System ID
TX0150018
Violations
22
Contaminant Test Results
2 contaminants above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
strontium | 2400.00 µg/L | — | Above Goal |
Lead (90th percentile) | 0.002 mg/L | 0.015 mg/L | Above Goal |
EPA Violation History
No violations in the past 5 years
Full EPA compliance since 2016.
Understanding violation severity
Tier 1Urgent health risk. Utility must notify all customers within 24 hours.Tier 2Important health or treatment issue. Customers notified within 30 days.Tier 3Administrative or monitoring issue. Reported in the annual water quality report.
Source: EPA Safe Drinking Water Information System (SDWIS) · Updated quarterly
Frequently Asked Questions About SAN ANTONIO WATER SYSTEM
Is SAN ANTONIO WATER SYSTEM water safe to drink?
SAN ANTONIO WATER SYSTEM water receives a grade of B (68/100), which is considered good. Out of 76 contaminants tested, none exceed EPA legal limits. 2 contaminant(s) exceed non-enforceable health goals. The water meets federal safety standards.
What contaminants has SAN ANTONIO WATER SYSTEM detected?
76 contaminants were tested in SAN ANTONIO WATER SYSTEM's water. Notable contaminants include Lead (90th percentile), strontium. No contaminants exceed EPA legal limits. 2 exceed EPA health goals (MCLGs).
Does SAN ANTONIO WATER SYSTEM have any EPA violations?
Yes, SAN ANTONIO WATER SYSTEM has 22 EPA violation(s) on record, with the most recent in 2016. Violation types include Other, MR, MCL. 1 are health-based violations.
How many people does SAN ANTONIO WATER SYSTEM serve?
SAN ANTONIO WATER SYSTEM serves approximately 2,113,151 people, Texas.
What type of water does SAN ANTONIO WATER SYSTEM provide?
SAN ANTONIO WATER SYSTEM sources its water from purchased surface water. Surface water comes from rivers, lakes, or reservoirs and typically requires more extensive treatment. The utility's system ID is TX0150018.
How does SAN ANTONIO WATER SYSTEM compare to other utilities in Texas?
SAN ANTONIO WATER SYSTEM scores 68/100 with a grade of B (good). This is an above-average performance for utilities statewide. Visit our Texas state page for a full comparison of water systems.