Water Quality Report

Schertz, TX (78154): PFAS Detected in Mapped Water Systems

EPA data combined for 11 water systems mapped to this ZIP (largest mapped system: City of Schertz)

PFAS Detected

EPA records for the water systems mapped to 78154 in Schertz, TX contain 17 recorded violations for inclusive record years 2021 through 2026, all mapped systems combined; 0 are marked health-based.

Data source: U.S. Environmental Protection Agency (EPA) SDWIS

Based on EPA Drinking Water FEMA Flood Data U.S. Census CDC Energy Information Admin. USGS Water Data & 9 more federal sources
Latest air quality, EPA records and weather alerts Current data temporarily unavailable
Current EPA violation data unavailable
Water records and current conditions
Current EPA violation data unavailable
Safety Score N/A
Water Quality Concerns 17 non-health-based violation records in EPA data
Lead Risk Below action level Below the reporting limit, 90th percentile, sample period ending 2026-06-30
NFIP Claim History Claim records 68 claims
Data confidence: High (direct measurement) Medium (sampled / sub-geography) Low (modeled / inferred) Methodology →

At a Glance

  • Water EPA records for water systems mapped to this ZIP show 17 violations (non-health) (since 2021).
  • Lead The reported 90th-percentile lead result is below the laboratory reporting limit, not a measured zero; EPA's health goal for lead is zero.
  • PFAS PFAS detected in UCMR5 sampling; see the PFAS section for each compound, compared with the federal PFAS MCL where one exists.
  • Radon EPA Zone 3 - county-level radon potential, not evidence of a low home result.
  • Flood 68 cumulative NFIP claim records. Check the current FEMA map for a specific address.
Contaminant Summary
Violations on record (not health-based)
17 violations PFAS detected
Report data assembled: Jul 27, 2026 EPA water-system identity: source date or period is not present in ZipCheckup's accepted source record EPA violation history: more than two update cycles old Lead, copper and UCMR measurements: source date or period is not present in ZipCheckup's accepted source record Consumer Confidence Report: source date or period is not present in ZipCheckup's accepted source record
11
Water Systems
41,948
People Served
0
Health Violations (since 2021)
Groundwater
Water Source
Zone 3
County Radon Potential · Low
$296K
Median Home Value52% above state median ($195K)

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Score Breakdown

Overall Home Safety Score: Score unavailable

Required evidence is missing. Missing values remain unknown and are not imputed or renormalized.

Canonical components

EPA water compliance
62/100
Observed
PFAS MCL screen
100/100
Observed
EPA radon zone
100/100
Observed
Annual EPA AirData AQI
Unknown
Evidence missing

Required domains

Drinking water
81/100
Indoor environment
100/100
Outdoor environment
Unknown

Coverage: 3 of 4 components and 2 of 3 domains observed.

Model 4.0.0; series home-safety-v4-cross-vertical.

Safety & Health (8) HIGH

Your Water System

ZIP code 78154 in Schertz, Texas is mapped to the water system City of Schertz (EPA ID: TX0940003). This system provides water to approximately 41,948 people from groundwater sources.

There are 11 community water systems serving this area.

Water Systems Serving This Area

System Name EPA ID Population Source
City of Schertz TX0940003 41,948 Groundwater
City of Selma TX0150492 11,418 Groundwater
City of Cibolo TX0940018 20,331 Surface water
Green Valley Special Utility District TX0940020 52,497 Surface water
San Antonio Water System TX0150018 2,643,729 Surface water

Other Water Quality Reports in Texas

Nearby Water Quality Reports

Data Sources

This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View available EPA compliance records for City of Schertz (TX0940003) 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.

📊 EPA Safe Drinking Water · View source →

PFAS Contamination Detected

PFAS ("forever chemicals") have been reported in samples from water systems associated with ZIP code 78154.

Detected compounds: PFBA, PFPeA, PFBS, PFHxS, PFHxA.

Highest measured level: 0.0102 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.

📊 EPA UCMR5 · View source →
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.

View all recalls →

📊 CPSC · View source →

Protect Your Home in Schertz

Based on local data for ZIP 78154, 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 Schertz has 68 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)

Roofing 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 Needs

Service 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 78154 safe to drink?

EPA SDWIS records 17 violations since 2021 across the water systems mapped to ZIP 78154 (primary system: City of Schertz), including 0 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 78154's water come from?

The recorded water source for City of Schertz, a system mapped to ZIP code 78154, is Groundwater. This system serves approximately 41,948 people.

How can I get my water tested in Schertz?

If City of Schertz 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.

What is the radon risk for 78154?

78154 is mapped to a county in EPA Radon Zone 3 (low county-level radon potential; EPA recommends testing every home), located in Bexar 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 78154's water?

Yes, PFAS have been detected in samples from water systems mapped to 78154. 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 78154?

FEMA records contain 68 flood insurance claims filed in ZIP code 78154; the recorded rated-zone value (the most frequent one if there are several claims) is X, 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

APA ZipCheckup. (2026). Schertz, TX (78154): PFAS Detected in Mapped Water Systems. https://zipcheckup.com/report/78154/
BibTeX 
@misc{zipcheckup-report-78154,
  author = {{ZipCheckup}},
  title  = {{Schertz, TX (78154): PFAS Detected in Mapped Water Systems}},
  year   = {2026},
  url    = {https://zipcheckup.com/report/78154/}
}

Page version: October 2026.

Nearby ZIP Code Reports

Water quality comparison for ZIP codes near 78154

ZIP Code City, State Distance Grade Violations
78148 Universal City, TX 2.5 mi A 5
78108 Cibolo, TX 3.0 mi B 84
78109 Converse, TX 5.0 mi A 19
78233 San Antonio, TX 5.4 mi A 5
78266 San Antonio, TX 6.2 mi N/A 169
78239 San Antonio, TX 6.6 mi A 1
78124 Marion, TX 7.6 mi N/A 18
78247 San Antonio, TX 7.8 mi A 0
78244 San Antonio, TX 8.1 mi A 8
78217 San Antonio, TX 8.9 mi A 0

Contaminants Detected in 78154

Learn more about the contaminants found in your water supply:

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Coverage: 15/17 risk factors Data sources →
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