Home hazard report for 78248 — San Antonio, TX
ZIP 78248 is served by Cadillac Water: no health-based violations since 2016, latest lead result 2.4 ppb, PFAS not tested. Bexar County is in EPA radon zone 3.
No health-based violations reported since 2016.
90th-percentile lead in the latest round (Jan 2024). Lead comes mostly from household plumbing and service lines, so individual homes can be higher.
This system was not part of EPA’s 2023–2025 nationwide PFAS testing (UCMR 5 covers systems serving over 3,300 people and a sample of smaller ones).
Predicted average under 2 pCi/L — but any home can have high radon, so EPA still recommends a test.
FEMA’s overall natural-hazard risk for this census tract, relative to the rest of the U.S.
The nearest active Superfund site is 8.7 miles away.
Active weather alerts
live from the National Weather ServiceChecking the National Weather Service…
Where ZIP 78248 is
Dashed: ZIP area · blue: utility service area · scroll or pinch to zoomDrinking water: Cadillac Water
Health-based violations
No health-based violations reported since 2016.
Full record for Cadillac Water →
Other systems overlapping this ZIP: San Antonio Water System.
Lead
90th-percentile lead per sampling round (90% of the homes sampled were at or below this level). Black line: EPA’s 15 ppb action level; under the Lead and Copper Rule Improvements the action level becomes 10 ppb from 2027.
PFAS (“forever chemicals”)
This system was not part of EPA’s 2023–2025 nationwide PFAS testing (UCMR 5).
Radon in Bexar County
EPA radon zone 3 — low potential. Predicted average under 2 pCi/L — but any home can have high radon, so EPA still recommends a test.
Radon is a colorless, odorless radioactive gas from soil and rock, and the leading cause of lung cancer among non-smokers. EPA recommends fixing a home at 4 pCi/L or above and considering it from 2 pCi/L. A short-term test kit costs about $15–30. How radon zones work →
Natural hazard risk
FEMA rates the overall natural-hazard risk of this neighborhood (census tract) as Relatively Moderate, with relatively low social vulnerability and relatively low community resilience.
FEMA National Risk Index (December 2025): expected annual losses from each hazard combined with social vulnerability and community resilience, rated relative to all U.S. census tracts. Hazards not listed are not applicable here. It describes the area, not a single building; flood insurance maps (FEMA FIRMs) decide flood-insurance requirements.
Live conditions: river gauges and flood levels · tornado warnings · wildfire detections · earthquakes — our sister maps, updated from NOAA, USGS and NASA every few minutes.
Superfund sites nearby
| Site | Status | Distance |
|---|---|---|
| Bandera Road Ground Water Plume Leon Valley, Texas · EPA ID TXN000606565 | Active (final NPL) | 8.7 mi |
EPA Superfund National Priorities List (NPL): the country’s most serious known hazardous-waste sites, each with an EPA cleanup record (linked). Distance is measured from the ZIP center to the site’s reference point; being near a site does not by itself mean exposure — EPA site pages describe what was found and how it is being cleaned up.
What this is — and isn’t. These are records your water utility and state reported to the EPA, and the EPA’s radon map for your county. They describe the system and the area, not the water from your own tap or the air in your home. For that, read your utility’s annual Consumer Confidence Report and test: lead and radon tests are inexpensive.
Questions about 78248
Who supplies drinking water to ZIP 78248?
Cadillac Water (EPA ID TX0150247), a groundwater (wells) system serving about 252 people.
Is there lead in San Antonio, TX tap water?
The utility’s latest 90th-percentile lead result (Jan 2024) was 2.4 ppb; EPA’s action level is 15 ppb, falling to 10 ppb from 2027. Lead mostly comes from service lines and home plumbing, so the only way to know your tap is to test it.
Does San Antonio, TX water have PFAS?
This system was not part of EPA’s 2023–2025 nationwide PFAS testing (UCMR 5 covers systems serving over 3,300 people and a sample of smaller ones).
Has the water system in 78248 had violations?
No health-based violations reported since 2016.
What natural hazards affect ZIP 78248?
FEMA’s National Risk Index rates the overall natural-hazard risk here as Relatively Moderate; the highest-rated hazards are hail (relatively high), riverine flooding (relatively high), tornado (relatively high).
Are there Superfund sites near 78248?
The nearest active Superfund site is 8.7 miles away. Sites within 10 miles: Bandera Road Ground Water Plume (8.7 mi, Active (final NPL)).
Is radon a problem in Bexar County?
Bexar County is in EPA radon zone 3 (low potential). Predicted average under 2 pCi/L — but any home can have high radon, so EPA still recommends a test.