Water Quality in Seguin, TX (78155)
EPA violation data for public water systems serving ZIP code 78155.
Active Health Violations
6 health-based violations found in the past 5 years, with at least one still unresolved. Contaminant levels have exceeded federal safety limits. Consider testing your tap water independently.
More violations than 95% of US ZIP codes.
Based on EPA compliance data. Not a substitute for an official water quality report from your utility.
55,600
Population
19
Water Systems
105
Violations (5yr)
6
Health-Based
Location
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Water Systems Serving This Area (19)
Green Valley Sud
All resolvedCity Of Schertz
Springs Hill Sud
2 health-basedCity Of Seguin
1 health-basedCrystal Clear Sud
City Of Cibolo
Manning Rv Park
River Shade Rv Park
Lifegate Ministries
Cissys Rv Ranch
Tx Highway Dept Comfort Sta
Shellys Rv Park
Country Living Estates
All resolvedShady Meadows Mobile Home Park
2 health-basedCamp Hamilton
Ameritex Conroe Cbp1
All resolvedMemory Lane Mhp
1 health-basedGarcias River Camp
Sons River Ranch
All resolvedContaminants Found
Missed testing deadlines — not a detection of bacteria.
Lead and copper testing requirement. Lead exposure can cause developmental harm in children.
Annual water quality report delivery requirement.
Used to disinfect water — generally safe at regulated levels.
At high levels, nitrate can cause blue baby syndrome in infants.
Lead & Copper Levels
Lead (Pb)
Within limitSampled: Jul 2025
How Does This Compare?
Seguin (78155) has more violations than 95% of US ZIP codes. The national average is 18.87 violations per ZIP over 5 years. This ZIP has 105.
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
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
UV Water Purifier
Uses ultraviolet light to neutralize bacteria, viruses, and parasites without chemicals. Ideal for homes with microbial contamination concerns.
Targets:E. coli, Coliform, Giardia, Cryptosporidium
Look for:NSF/ANSI 55 (Class A) certified
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.