Seguin, TX (78155): PFAS Detected in Mapped Water Systems
EPA data combined for 8 water systems mapped to this ZIP (largest mapped system: City of Seguin)
Health-based violation records by water system:
EPA records for the water systems mapped to 78155 in Seguin, TX contain 45 recorded violations for inclusive record years 2021 through 2026, all mapped systems combined; 3 are marked health-based.
Data source: U.S. Environmental Protection Agency (EPA) SDWIS
At a Glance
- Water EPA records for water systems mapped to this ZIP show 3 health-based violations and 42 non-health-based (since 2021).
- Lead The reported 90th-percentile lead result of 0.0014 mg/L is below the EPA action level for water systems; EPA's health goal for lead is zero.
- PFAS At least one PFAS result is above an EPA MCL value (UCMR5 sampling; MCL compliance required from 2029).
- Radon EPA Zone 3 - county-level radon potential, not evidence of a low home result.
- Flood 1,471 cumulative NFIP claim records. This historical count is not a current property-risk verdict.
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Although the dataset for Seguin (78155) is limited in scope, one critical condition stands as the only elevated finding on record.
Score Breakdown
Overall Home Safety Score: Score unavailable
Required evidence is missing. Missing values remain unknown and are not imputed or renormalized.
Canonical components
Required domains
Coverage: 3 of 4 components and 2 of 3 domains observed.
Model 4.0.0; series home-safety-v4-cross-vertical.
Safety & Health (6) CRITICAL
Your Water System
ZIP code 78155 in Seguin, Texas is mapped to the water system City of Seguin (EPA ID: TX0940002). This system provides water to approximately 32,736 people from surface water sources.
There are 8 community water systems serving this area.
Water Systems Serving This Area
| System Name | EPA ID | Population | Source |
|---|---|---|---|
| City of Seguin | TX0940002 | 32,736 | Surface water |
| Springs Hill Special Utility District | TX0940022 | 35,541 | Surface water |
| Green Valley Special Utility District | TX0940020 | 52,497 | Surface water |
| Crystal Clear Special Utility District | TX0940015 | 20,766 | Surface water |
| East Central Special Utility District | TX0150138 | 26,137 | Surface water |
Other Water Quality Reports in Texas
- 73301 (Austin)
- 73344 (Austin)
- 73960 (Texhoma)
- 75001 (Addison) - 2 violations recorded for mapped water systems
- 75002 (Allen) - 14 violations recorded for mapped water systems
- 75006 (Carrollton) - 2 violations recorded for mapped water systems
- 75007 (Carrollton) - 1 violation recorded for mapped water systems
- 75009 (Celina) - 18 violations recorded for mapped water systems
- 75010 (Carrollton) - 1 violation recorded for mapped water systems
- 75011 (Carrollton)
- 75013 (Allen)
- 75014 (Irving)
- 75015 (Irving)
- 75016 (Irving)
- 75017 (Irving)
- 75019 (Coppell) - 5 violations recorded for mapped water systems
- 75020 (Denison) - 38 violations recorded for mapped water systems
- 75021 (Denison) - 30 violations recorded for mapped water systems
- 75022 (Flower Mound) - 18 violations recorded for mapped water systems
- 75023 (Plano)
Nearby Water Quality Reports
- 78156 (Seguin) - 4 mi
- 78115 (Geronimo) - 5 mi
- 78123 (Mc Queeney) - 6 mi - 8 violations recorded for mapped water systems
- 78638 (Kingsbury) - 11 mi - 6 violations recorded for mapped water systems
- 78124 (Marion) - 11 mi - 18 violations recorded for mapped water systems
- 78150 (Randolph A F B) - 13 mi
- 78130 (New Braunfels) - 13 mi - 13 violations recorded for mapped water systems
- 78131 (New Braunfels) - 14 mi
- 78135 (New Braunfels) - 14 mi
- 78108 (Cibolo) - 16 mi - 84 violations recorded for mapped water systems
Data Sources
This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View available EPA compliance records for City of Seguin (TX0940002) on EPA.gov.
4 of the top compounds applied across the surrounding county in USGS pesticide-use estimates appear on EPA drinking-water monitoring lists. See the agricultural pesticide-use section.
PFAS Contamination Detected
PFAS ("forever chemicals") have been reported in samples from water systems associated with ZIP code 78155. One or more compound results are above the level of a federal PFAS MCL with compliance required from 2029.
Detected compounds: PFBA, PFPeA, PFOS.
Highest measured level: 0.0097 µg/L
Reverse osmosis (RO) and activated carbon block filters can reduce PFAS at the tap. Certifications list the compounds covered: an NSF/ANSI 53 or 58 claim for PFOA/PFOS does not cover every PFAS, so check that the product lists the compounds detected here.
Environmental Hazards (11) HIGH
Home & Infrastructure (6) OK
Cost & Community (9) HIGH
CPSC product recall notices
These national notices are not matched to this ZIP code or water system.
Protect Your Home in Seguin
Based on local data for ZIP 78155, these services may benefit homeowners in your area.
Based on local data for your area. Use the tools below to explore your options.
Home & Flood Insurance
The ZIP code for this report in Seguin has 1,471 FEMA flood claims on record. Standard homeowner policies don't cover flood damage - make sure you're protected.
Typical cost: Flood insurance: premiums vary by property and flood zone; request a quote
Check Your Flood Zone (Free)FEMA flood map lookup - see if your property is in a flood zone
Free tip: Check your FEMA flood zone at msc.fema.gov (free lookup)
Gutter Installation & Repair
The median home in 78155 was built around 1981. Aging gutters can cause foundation damage, basement flooding, and mold - a professional assessment can prevent costly repairs.
Typical cost: Gutter installation: typically $1,000–$2,500 for a standard home
Estimate Your Home Maintenance CostsWindow Replacement
The median build year of homes in Seguin is 1981; check the age and condition of your own windows. ENERGY STAR windows can save $101–$583/year on energy bills.
Typical cost: Window replacement: typically $300–$800 per window installed
Estimate Your Home Maintenance CostsRoofing Inspection & Repair
Active weather alerts in Texas increase the risk of roof damage from hail and high winds. A professional inspection can identify vulnerabilities.
Typical cost: Roof inspection: typically $75–$300; repairs $300–$1,500
Estimate Your Home Insurance NeedsService recommendations are based on public data for this ZIP code (FEMA, Census ACS, NWS). Actual needs vary by property. By calling, your information will be shared with an independent service provider. ZipCheckup may receive compensation. Cost estimates are approximate and vary by property, condition, and contractor.
Frequently Asked Questions
Is the tap water in 78155 safe to drink?
EPA SDWIS records 45 violations since 2021 across the water systems mapped to ZIP 78155 (primary system: City of Seguin), including 3 health-based. The violation table above shows which system each record belongs to. ZipCheckup last updated this page in July 2026. The federal source release date is unavailable, so that month is not presented as source currency.
Where does 78155's water come from?
The recorded water source for City of Seguin, a system mapped to ZIP code 78155, is Surface water. This system serves approximately 32,736 people.
How can I get my water tested in Seguin?
If City of Seguin supplies your home, contact it for its Consumer Confidence Report; otherwise contact the water utility that serves your address, or hire a certified lab for independent home water testing. The EPA recommends annual testing if you use a private well.
Is lead a concern in 78155 tap water?
The Lead and Copper Rule record selected for 78155 reports a 90th-percentile lead result of 0.00145 mg/L for a water system mapped to this ZIP (record date 2025-12-31). The EPA action level is 0.015 mg/L. This result is below the EPA action level; it does not show the lead level in each home.
What is the radon risk for 78155?
78155 is mapped to a county in EPA Radon Zone 3 (low county-level radon potential; EPA recommends testing every home), located in Guadalupe County. EPA radon zones range from Zone 1 (highest county-level potential) to Zone 3 (lowest). Testing your home is recommended regardless of zone.
Are there PFAS (forever chemicals) in 78155's water?
Yes, PFAS have been detected in samples from water systems mapped to 78155. One or more PFAS results are above the level of a federal PFAS MCL with compliance required from 2029. Reverse osmosis and activated carbon filters certified to NSF/ANSI 53 or 58 specifically for PFOA/PFOS reduction can reduce PFAS.
What does the NFIP claim history show for ZIP 78155?
FEMA records contain 1471 flood insurance claims filed in ZIP code 78155; the recorded rated-zone value (the most frequent one if there are several claims) is AE, which is claims evidence and may differ from the current FEMA map zone for a property. This is a substantial claim history, but claim count is not a count of distinct events or properties. Review FEMA's map for the specific property.
How to cite this page
ZipCheckup. (2026). Seguin, TX (78155): PFAS Detected in Mapped Water Systems. https://zipcheckup.com/report/78155/
@misc{zipcheckup-report-78155,
author = {{ZipCheckup}},
title = {{Seguin, TX (78155): PFAS Detected in Mapped Water Systems}},
year = {2026},
url = {https://zipcheckup.com/report/78155/}
}
Page version: October 2026.
Nearby ZIP Code Reports
Water quality comparison for ZIP codes near 78155
| ZIP Code | City, State | Distance | Grade | Violations |
|---|---|---|---|---|
| 78156 | Seguin, TX | 3.5 mi | N/A | 0 |
| 78115 | Geronimo, TX | 4.8 mi | N/A | 0 |
| 78123 | Mc Queeney, TX | 5.9 mi | N/A | 8 |
| 78638 | Kingsbury, TX | 11.1 mi | N/A | 6 |
| 78124 | Marion, TX | 11.4 mi | N/A | 18 |
| 78150 | Randolph A F B, TX | 12.8 mi | N/A | 0 |
| 78130 | New Braunfels, TX | 13.0 mi | N/A | 13 |
| 78131 | New Braunfels, TX | 13.8 mi | N/A | 0 |
| 78135 | New Braunfels, TX | 13.8 mi | N/A | 0 |
| 78108 | Cibolo, TX | 16.0 mi | B | 84 |
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