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TheH2O Standard

What's in your water? Your city's water, explained

Hardness, disinfectant and what locals deal with, city by city.

We break down each city's water reports in plain English: hardness, disinfectant, and what locals deal with. [Once episodes are filmed: we also test real homes on camera.]

  • Plain English
  • Sourced from utility reports
  • Free
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Every City

Miami, FLMiami, FLMiami's water comes from the Biscayne Aquifer, a hard, limestone aquifer. It's softened at the plant and disinfected with chloramine, and the county's 2025 report shows PFAS above the EPA's new limit. Here's what that means for your home.Learn moreFort Lauderdale, FLFort Lauderdale, FLThe city softens its water before it reaches you, at about 3 grains per gallon. What it adds is chloramine, a disinfectant that gives water that pool taste and smell. Here's what actually fixes it.Learn moreWest Palm Beach, FLWest Palm Beach, FLWest Palm Beach water comes from rainwater stored in the Grassy Waters Preserve. The city softens it at the plant, so it's only moderately hard, and disinfects with chloramine and UV.Learn moreTampa, FLTampa, FLTampa water measures about 8 to 11 grains per gallon of hardness, well into the hard range, and it's disinfected with chloramine. Here's what that means for your home, and which system fixes it.Learn moreSt. Petersburg, FLSt. Petersburg, FLSt. Petersburg's water is treated at the city's Cosme plant in Odessa, from a blend of wells, river water and desalinated seawater. It runs about 7.3 grains of hardness and is disinfected with chloramine.Learn moreOrlando, FLOrlando, FLOrlando's water comes from the Floridan Aquifer, runs about 7.5 grains of hardness, and starts out smelling like sulfur, which the utility removes with ozone. Here's what reaches your tap, and what to do about it.Learn moreJacksonville, FLJacksonville, FLJEA pulls Jacksonville's water from the Floridan Aquifer, and it runs about 11 grains of hardness, some of the hardest city water in the state. Here's what that does to your home, and how to fix it.Learn moreCape Coral, FLCape Coral, FLCape Coral makes its city water with reverse osmosis, so it's only moderately hard. Many homes on private wells are a different story. Here's what applies to you.Learn moreFort Myers, FLFort Myers, FLFort Myers city water is made by reverse osmosis from brackish groundwater, so it's soft. Many homes around the city are on wells that run very hard. Here's which one you have, and what to do.Learn moreHouston, TXHouston, TXAbout 86% of Houston's water comes from lakes, and it's disinfected with chloramine. That means moderate hardness, a steady pool taste and seasonal changes. Here's what fixes it.Learn moreSan Antonio, TXSan Antonio, TXSan Antonio's water comes mostly from aquifers, including the Edwards, and runs about 10.5 grains of hardness. Here's what that means for your home.Learn moreDallas, TXDallas, TXDallas runs entirely on surface water from seven reservoirs, disinfected with chloramine. It's moderately hard, about 6.5 grains. Here's what fixes it.Learn moreAustin, TXAustin, TXAustin's city water is only moderately hard, about 4 grains, because it's softened at the plant. Here's what your home actually needs. [Local facts to verify with Austin Water.]Learn moreFort Worth, TXFort Worth, TXFort Worth water runs about 6.3 grains of hardness, moderately hard. Here's what that means for your home. [Local facts to verify with Fort Worth Water.]Learn more

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Every city's water is different. Here's yours.

Water across our cities

Sources: utility reports and TapWaterData.

Find your city

Florida Texas
Miami, Fort Lauderdale, West Palm Beach Houston, San Antonio
Tampa, St. Petersburg, Orlando Dallas, Austin, Fort Worth
Jacksonville, Cape Coral, Fort Myers

Life with it vs. without

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Guessing about your waterYour city, explained

Our take

Why water tastes different in every city

After [thousands] of softeners sold and 20+ years wholesaling water equipment to other companies, here's what we've learned.

Water picks up the taste of where it comes from and how it's treated. Groundwater from limestone aquifers, like much of Florida's, tends to be hard and mineral-tasting. River and lake water, like Tampa's or Houston's, can pick up earthy tastes when algae blooms. Some cities soften their water at the plant, so it arrives soft.

Then there's the disinfectant. Chloramine cities often have a steady pool-like taste. And when a city switches sources in a drought, the taste can change overnight. That's why each of our city pages starts from that city's own reports.

Our own lab, 20+ years of water testing

Your sample goes to our own lab.

  • 20+ years in water
  • Our own patents
  • We supply other water companies
  • [Thousands] of systems sold
  • Licensed installers

Questions people ask

Is my city's tap water safe?

Utilities must meet federal standards. Each city page shows what the reports say.

Why does my water taste different from my old city?

Different sources, minerals and disinfectants.

What is chloramine?

Chlorine combined with ammonia; harder to filter than chlorine.

Do you test homes in my city?

[Coming with episodes.] For now, get a free test kit.

Is my city on the list?

We're adding cities. Check your ZIP.

Where does your data come from?

Each city's own water reports and public data.