Water Quality in San Antonio, TX (78108)

EPA violation data for public water systems serving ZIP code 78108.

Based on EPA compliance data. Not a substitute for an official water quality report from your utility.

49,784

Population

13

Water Systems

20

Violations (5yr)

6

Health-Based

Location

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Water Systems Serving This Area (13)

San Antonio Water System

Purchased surface water 2,113,151 people served
0 violations
Lead tested: 1.6 ppb (limit: 15 ppb) ✓

New Braunfels Utilities

All resolved
Surface water 116,477 people served
1 violation (5yr) · All resolved
Lead tested: 1.7 ppb (limit: 15 ppb) ✓

Green Valley Sud

All resolved
Purchased surface water 52,497 people served
4 violations (5yr) · All resolved
Lead tested: 1.9 ppb (limit: 15 ppb) ✓

Clwsc Canyon Lake Shores

3 health-based
Surface water 44,196 people served
6 violations (5yr) · 3 health-based · All resolved
Lead tested: 2 ppb (limit: 15 ppb) ✓

City Of Schertz

Groundwater 41,948 people served
3 violations (5yr)
Lead tested: 0 ppb (limit: 15 ppb) ✓

Springs Hill Sud

2 health-based
Surface water 35,472 people served
3 violations (5yr) · 2 health-based · All resolved
Lead tested: 1.12 ppb (limit: 15 ppb) ✓

Sjwtx Triple Peak Plant

All resolved
Surface water 32,973 people served
2 violations (5yr) · All resolved
Lead tested: 1.4 ppb (limit: 15 ppb) ✓

City Of Seguin

1 health-based
Surface water 32,736 people served
1 violation (5yr) · 1 health-based · All resolved
Lead tested: 1.45 ppb (limit: 15 ppb) ✓

Crystal Clear Sud

Purchased surface water 20,766 people served
0 violations
Lead tested: 1.6 ppb (limit: 15 ppb) ✓

City Of Cibolo

Purchased surface water 20,331 people served
0 violations
Lead tested: 1.1 ppb (limit: 15 ppb) ✓

Guadco Mud 1 & 2

Purchased groundwater 2,583 people served
0 violations

Schaefer Road Water Supply Cor

Groundwater 850 people served
0 violations

Emerald Hills Water

Groundwater 30 people served
0 violations

Contaminants Found

TTHMHealth-Based
5 violations
All resolved
Interim Enhanced Surface Water Treatment RuleHealth-Based
1 violation
All resolved
Revised Total Coliform RuleMonitoring

Missed testing deadlines — not a detection of bacteria.

5 violations
All resolved
Consumer Confidence RuleMonitoring

Annual water quality report delivery requirement.

3 violations
All resolved
E. COLIMonitoring
2 violations
All resolved
Lead and Copper RuleMonitoring

Lead and copper testing requirement. Lead exposure can cause developmental harm in children.

2 violations
Has active
CARBON, TOTALMonitoring
1 violation
All resolved

Lead & Copper Levels

Lead (Pb)

Within limit
0 ppb measured Action level: 15 ppb

Sampled: Jul 2025

How Does This Compare?

San Antonio (78108) has more violations than 79% of US ZIP codes. The national average is 18.87 violations per ZIP over 5 years. This ZIP has 20.

Fewer violations 79th percentile More violations

Recommended Water Filters

Based on health-based violations detected in your area, these filter types are commonly used to address similar contaminants. Consult your water utility's Consumer Confidence Report for the most current data.

Activated Carbon Filter

Excellent for removing chlorine, chloramine, and disinfection byproducts like THMs and HAAs. Available as pitcher filters, countertop, or under-sink units.

Targets:THMs, HAAs, Chlorine, Chloramine, Taste & Odor

Look for:NSF/ANSI 42 & 53 certified

NSF Certified Products → EPA Safe Drinking Water Guide →

Always look for filters certified by NSF International for the specific contaminants you want to remove. This is general educational information, not an endorsement of any specific product.

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