Water Quality in San Antonio, TX (78236)
EPA violation data for public water systems serving ZIP code 78236.
No Health-Based Violations
None of the 7 water systems serving this ZIP have exceeded federal contaminant limits in the past 5 years. There are6 monitoring/reporting violations (missed testing deadlines), all resolved.
Better than 57% of US ZIP codes.
Based on EPA compliance data. Not a substitute for an official water quality report from your utility.
7,635
Population
7
Water Systems
6
Violations (5yr)
0
Health-Based
Location
Loading map...
Water Systems Serving This Area (7)
San Antonio Water System
Jbsa - Lackland
All resolvedSan Antonio Military Medical Center
All resolvedJbsa - Medina
Jbsa - Canyon Lake - Sunnyside
All resolvedJbsa - Canyon Lake - Hancock Cove
All resolvedWilford Hall Ambulatory Surgical Center
All resolvedContaminants Found
Lead and copper testing requirement. Lead exposure can cause developmental harm in children.
At high levels, nitrate can cause blue baby syndrome in infants.
Missed testing deadlines — not a detection of bacteria.
Lead & Copper Levels
Lead (Pb)
Within limitSampled: Jan 2025
Copper (Cu)
Exceeds limitSampled: Jul 2023
How Does This Compare?
San Antonio (78236) has more violations than 57% of US ZIP codes. The national average is 18.87 violations per ZIP over 5 years. This ZIP has 6, most of which are monitoring/reporting issues.
Water Filter Recommendations
No contaminant issues detected. For general protection, a basic carbon filter removes common impurities like chlorine and sediment. Look for NSF/ANSI 42 certified products.