Water Quality & Forever Chemicals
Typed "is San Antonio tap water safe" and want a straight answer? Here it is, calmly: this page is a plain-English summary of what public federal water records show for San Antonio, Texas, not a verdict on your kitchen faucet. What actually varies, address to address, is which utility and which South Texas sources feed your line. We read the datasets so you can start from facts rather than a search-results pile.
0
PFAS detections in nearby water systems
EPA UCMR 5 (2021–2024) results matching the city name
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Industrial PFAS facilities in city
EPA TRI 2024 reporting
6
DoD PFAS installations statewide
In Texas
San Antonio and much of the surrounding region tend to rely heavily on groundwater from the Edwards Aquifer, a limestone system that has long supplied a large share of the area's drinking water, increasingly supplemented by other regional sources. Because the city leans so much on that aquifer rather than distant reservoirs, San Antonio's water story is largely a groundwater one, though the exact mix still shifts over time.
To pin down who serves a particular San Antonio address, begin with the system named above, keeping in mind that two homes not far apart can be on separate public water systems across Bexar County. That utility is required to publish an annual Consumer Confidence Report, and calling the contact it lists is the fastest way to get street-level answers. When evaluating an address here, this detail is worth reviewing, since the city snapshot may not match your faucet.
Groundwater pulled from the limestone Edwards Aquifer that much of San Antonio relies on tends to run on the harder side, so if your dishes look cloudy here, that's usually a nuisance story, not a safety one. We won't pretend to know your tap's number, because no such figure lives in these records. An inexpensive test kit answers it directly, and the hardness line in your utility's annual report is another free place to peek.
EPA required public water systems serving 3,300+ people to test 29 PFAS compounds between 2021 and 2024.
City-level numbers describe the broad pattern around San Antonio; two homes a mile apart can sit on different water systems with very different profiles. The address report fills that gap — it identifies the public water system serving a specific property, lists any PFAS detections on that exact system, and maps the nearby industrial and Superfund sources.
Guide
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Guide
PFAS “Forever Chemicals” — A Homebuyer's Guide
What PFAS are, why they matter, and what to do before closing.
How-to
How to Check for PFAS Near Your Address
A walkthrough of the federal datasets we pull from.
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Environmental Risks to Check Before Buying a House
A practical pre-offer checklist for buyers and agents.
This page summarizes what federal public records, like the UCMR 5 monitoring program, show for San Antonio, and detection in those records isn't the same as exceeding a limit. UCMR 5 leans toward larger systems, so a quiet result means no records turned up here, not a certified all-clear. The only address-level answer comes from the specific system serving that address.
Start with the system or systems listed on this page, then look up that utility's published contact details and its annual Consumer Confidence Report. Because adjacent San Antonio addresses can sit on different public water systems across Bexar County, the one serving your street is the authority on your particular tap, not the city-wide picture.
Much of the San Antonio region tends to rely on groundwater from the Edwards Aquifer, a limestone system that has long supplied a large share of the area's water, increasingly supplemented by other regional sources. Think of it as a groundwater-led mix rather than one fixed source for every San Antonio neighborhood.
Groundwater from the limestone Edwards Aquifer that much of San Antonio relies on tends to run on the harder side, which often shows up as scale on fixtures rather than a health concern. We can't cite a figure for your address, so a test strip or your utility's annual report, which frequently lists hardness, is the reliable way to check your own water.
Enter an address — we'll identify the serving water utility, pull PFAS detections, FEMA flood zone, and nearby Superfund sites, then give you a plain-English A–F grade. $19.99 single, $29.99 two-address bundle.
One-time report. PFAS, water violations, Superfund sites, flood zone, air quality, and a plain-English A–F grade for the address.
More Texas data: Superfund sites · PFAS in Texas
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