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WaterSafety

San Antonio Water System

San Antonio, Texas · PWSID: TX0150018

B
Water Safety Score
80/100
2,113,151
Population Served
Surface water
Source Type
0
Health Violations
0
Contaminant Exceedances

Detected Contaminants

ContaminantDetected LevelMCL (Limit)StatusSample Date
Total Coliform2.5 % positive5 % positiveWithin LimitFeb 1, 2016
E. coli (RTCR)0 presence0 presenceWithin LimitJun 10, 2016

Violation History

Total Coliform
Treatment TechniqueFeb 1, 2016 - Aug 4, 2016
Resolved
Enforcement: 950041714
Total Coliform
Treatment TechniqueFeb 1, 2016 - Aug 4, 2016
Resolved
Enforcement: 950041714
E. coli (RTCR)
ReportingJun 10, 2016 - Jun 12, 2016
Resolved
Enforcement: 950041678
E. coli (RTCR)
ReportingJun 10, 2016 - Jun 12, 2016
Resolved
Enforcement: 950041678

Frequently Asked Questions

San Antonio Water System has a Water Safety Score of B (80/100). The system serves 2,113,151 people and has 0 health violations on record. Check the contaminant table above for specific detected substances.

San Antonio Water System has 0 contaminant exceedances above EPA health guidelines. See the full contaminant detection table above for all tested substances and their levels relative to legal limits and health guidelines.

The Water Safety Score (0-100, grades A through F) is based on contaminant levels relative to legal limits, health guideline exceedances, violation history, and enforcement actions. Higher scores indicate fewer concerns.

If your water system has violations, request the Consumer Confidence Report from your utility, consider getting an independent water test from a certified lab, and look into certified water filters for specific contaminants of concern. For lead, run cold water for 30 seconds before drinking.

Sources: EPA SDWIS, EWG Tap Water Database
Last updated:

Water quality data sourced from EPA's Safe Drinking Water Information System (SDWIS). Safety scores are calculated based on contaminant levels, violations, and enforcement history. This is not a substitute for your utility's official Consumer Confidence Report.