Water Quality in San Antonio, TX (78266)

EPA violation data for public water systems serving ZIP code 78266.

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

7,338

Population

14

Water Systems

170

Violations (5yr)

4

Health-Based

Location

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Water Systems Serving This Area (14)

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) ✓

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) ✓

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 Garden Ridge

Groundwater 5,100 people served
0 violations
Lead tested: 3.7 ppb (limit: 15 ppb) ✓

Natural Bridge Caverns

All resolved
Groundwater 900 people served
3 violations (5yr) · All resolved

Natl Bridge Wildlife Ranch

All resolved
Groundwater 200 people served
1 violation (5yr) · All resolved

Christianson Air Conditioning & Plumbing

Groundwater 75 people served
0 violations
Lead tested: 0 ppb (limit: 15 ppb) ✓

Cactus And Brush

Groundwater 70 people served
0 violations
Lead tested: 1 ppb (limit: 15 ppb) ✓

K&L Properties

1 health-based
Groundwater 60 people served
29 violations (5yr) · 1 health-based
Lead tested: 0.6 ppb (limit: 15 ppb) ✓

Siesta Village Wsc

Groundwater 35 people served
0 violations

Big Country 207

All resolved
Purchased surface water 25 people served
1 violation (5yr) · All resolved

Bracken Store

Groundwater 0
0 violations

Ada Enterprises

All resolved
Groundwater 0
127 violations (5yr) · All resolved

Contaminants Found

TTHMHealth-Based
3 violations
All resolved
LEAD AND COPPER RULE REVISIONSHealth-Based
2 violations
Has active
Interim Enhanced Surface Water Treatment RuleHealth-Based
1 violation
All resolved
Revised Total Coliform RuleMonitoring

Missed testing deadlines — not a detection of bacteria.

37 violations
All resolved
Public NoticeMonitoring
15 violations
Has active
Lead and Copper RuleMonitoring

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

6 violations
All resolved
E. COLIMonitoring
2 violations
All resolved
ChlorineMonitoring

Used to disinfect water — generally safe at regulated levels.

2 violations
All resolved
Aldicarb sulfoneMonitoring
2 violations
All resolved
HexachlorocyclopentadieneMonitoring
2 violations
All resolved
Aldicarb sulfoxideMonitoring
2 violations
All resolved
1,1,2-TrichloroethaneMonitoring
2 violations
All resolved
o-DichlorobenzeneMonitoring
2 violations
All resolved
1,1-DichloroethyleneMonitoring
2 violations
All resolved
Heptachlor epoxideMonitoring
2 violations
All resolved
2,4,5-TPMonitoring
2 violations
All resolved
1,1,1-TrichloroethaneMonitoring
2 violations
All resolved
1,2-DichloroethaneMonitoring
2 violations
All resolved
2,4-DMonitoring
2 violations
All resolved
BenzeneMonitoring
2 violations
All resolved
cis-1,2-DichloroethyleneMonitoring
2 violations
All resolved
p-DichlorobenzeneMonitoring
2 violations
All resolved
StyreneMonitoring
2 violations
All resolved
CHLOROBENZENEMonitoring
2 violations
All resolved
1,2-DIBROMO-3-CHLOROPROPANEMonitoring
2 violations
All resolved
ToxapheneMonitoring
2 violations
All resolved
SimazineMonitoring
2 violations
All resolved
ETHYLENE DIBROMIDEMonitoring
2 violations
All resolved
EthylbenzeneMonitoring
2 violations
All resolved
PicloramMonitoring
2 violations
All resolved
Vinyl chlorideMonitoring
2 violations
All resolved
1,2-DichloropropaneMonitoring
2 violations
All resolved
Xylenes, TotalMonitoring
2 violations
All resolved
HEXACHLOROBENZENEMonitoring
2 violations
All resolved
CarbofuranMonitoring
2 violations
All resolved
TolueneMonitoring
2 violations
All resolved
Di(2-ethylhexyl) phthalateMonitoring
2 violations
All resolved
HeptachlorMonitoring
2 violations
All resolved
TetrachloroethyleneMonitoring
2 violations
All resolved
PentachlorophenolMonitoring
2 violations
All resolved
DinosebMonitoring
2 violations
All resolved
1,2,4-TrichlorobenzeneMonitoring
2 violations
All resolved
Di(2-ethylhexyl) adipateMonitoring
2 violations
All resolved
OXAMYLMonitoring
2 violations
All resolved
AldicarbMonitoring
2 violations
All resolved
BHC-GAMMAMonitoring
2 violations
All resolved
TrichloroethyleneMonitoring
2 violations
All resolved
LASSOMonitoring
2 violations
All resolved
AtrazineMonitoring
2 violations
All resolved
trans-1,2-DichloroethyleneMonitoring
2 violations
All resolved
EndrinMonitoring
2 violations
All resolved
Benzo(a)pyreneMonitoring
2 violations
All resolved
ChlordaneMonitoring
2 violations
All resolved
DICHLOROMETHANEMonitoring
2 violations
All resolved
Carbon tetrachlorideMonitoring
2 violations
All resolved
DalaponMonitoring
2 violations
All resolved
MethoxychlorMonitoring
2 violations
All resolved
CARBON, TOTALMonitoring
1 violation
All resolved
Total Haloacetic Acids (HAA5)Monitoring
1 violation
All resolved
NitrateMonitoring

At high levels, nitrate can cause blue baby syndrome in infants.

1 violation
All resolved

Lead & Copper Levels

Lead (Pb)

Within limit
1.7 ppb measured Action level: 15 ppb

Sampled: Jan 2023

How Does This Compare?

San Antonio (78266) has more violations than 98% of US ZIP codes. The national average is 18.87 violations per ZIP over 5 years. This ZIP has 170.

Fewer violations 98th 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.

Reverse Osmosis System

Highly effective at removing heavy metals, dissolved solids, and a wide range of contaminants. Recommended for homes with lead or arsenic concerns.

Targets:Lead, Copper, Arsenic, Mercury, Cadmium

Look for:NSF/ANSI 58 certified

NSF Certified Products → EPA Safe Drinking Water Guide →

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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