San Antonio might be known for the River Walk, breakfast tacos, and intense Spurs fandom—but what about its tap water? If you've ever noticed a mineral tang or wondered if your H2O is more "meh" than miraculous, you’re not alone.
Let’s break down what’s really in your San Antonio water, what the federal government considers “safe,” and how Dupure can help you sip confidently.
The Water Source: Where San Antonio Gets Its Water
San Antonio’s water mainly comes from the Edwards Aquifer—a natural underground limestone reservoir that’s been doing its thing for centuries. It’s clean, reliable, and provides around 90% of the city’s drinking water. The rest comes from other aquifers and surface water sources.
Sounds fancy, right? Well, even the best natural water needs a little TLC before it hits your faucet.
Treated and Tested (But Still Needs Help)
San Antonio Water System (SAWS) treats your water to meet EPA standards under the Safe Drinking Water Act. This means:
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Killing off microbes (like E. coli and Giardia)
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Removing heavy metals (like lead and arsenic)
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Controlling byproducts from disinfectants (like chlorine)
It’s safe. It’s legal. But it might not be your taste buds’ BFF.
The "Safe" Water Loophole
Here’s the kicker: just because your water is legally safe doesn’t mean it’s perfect.
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EPA limits haven’t been seriously updated since the '90s
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Taste and smell? Not regulated.
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Mineral content? Also not a concern unless it’s extreme.
So if your water smells like a public pool or leaves crusty white stuff on your faucet, you’re not imagining things.
Common San Antonio Water Complaints
Locals often report:
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Hard Water: San Antonio water is high in calcium and magnesium
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Chlorine Taste: Used to disinfect but not exactly gourmet
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Limescale Buildup: On dishes, faucets, and your soul
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Dry Skin & Hair: A common side effect of hard, chlorinated water
Why Dupure is Your Tap Water Wingman
Want water that tastes good and is good for your body and home? That’s where Dupure comes in:
We tailor every system to San Antonio’s unique water profile. Your aquifer-to-sink journey just got a major glow-up.
Quick Recap: San Antonio Water Quality
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Mostly sourced from the Edwards Aquifer
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Treated by SAWS to meet EPA standards
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Still high in minerals and chlorine
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Dupure systems = tastier, softer, cleaner water
FAQ: San Antonio Tap Water
Q: Is San Antonio tap water safe to drink?
A: Yes, it meets federal standards—but many residents prefer filtration for taste and overall quality.
Q: Why is the water so hard in San Antonio?
A: Blame the aquifer. It’s packed with natural minerals like calcium and magnesium.
Q: What kind of filtration system should I get?
A: We recommend a whole-home softener and a reverse osmosis filter for drinking and cooking.
Your Water Deserves Better
Just because it’s "safe" doesn’t mean it’s what you want. Let Dupure help you turn San Antonio’s hard, minerally water into something you’ll actually enjoy drinking.
Contact us today for custom water filtration solutions built for your home and your taste buds.
What's In Your Water?
Find out how clean your water is (or isn’t) with our Free Water Assessment, and learn more about the Dupure water filtration, conditioning and softening systems that will help you make your house a safer, healthier home.
