Water Quality in San Antonio, TX (78257)
EPA violation data for public water systems serving ZIP code 78257.
No Health-Based Violations
None of the 8 water systems serving this ZIP have exceeded federal contaminant limits in the past 5 years. There are22 monitoring/reporting violations (missed testing deadlines), all resolved.
Better than 80% of US ZIP codes.
Based on EPA compliance data. Not a substitute for an official water quality report from your utility.
10,992
Population
8
Water Systems
22
Violations (5yr)
0
Health-Based
Location
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Water Systems Serving This Area (8)
San Antonio Water System
Las Palapas Tex Mex Cafe
All resolvedPatios Del Lago Felipes Restaurant
Mt Princeton Rv Park And Cabins
Paleos Food To Go
King Ranch Gas Plant
Petrochem Environmental Services
Southpark Mobile Home Estates
All resolvedContaminants Found
Missed testing deadlines — not a detection of bacteria.
Lead and copper testing requirement. Lead exposure can cause developmental harm in children.
Lead & Copper Levels
Lead (Pb)
Within limitSampled: Jan 2023
How Does This Compare?
San Antonio (78257) has more violations than 80% of US ZIP codes. The national average is 18.87 violations per ZIP over 5 years. This ZIP has 22, 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.