We've tested the water here ourselves
We don't repeat numbers off the internet — we measure it. Across more than 70 Marble Falls homes we've tested, we consistently see hardness in the 13 to 14 grains per gallon range. The city doesn't publish an easy-to-find hardness figure, so our field data is the clearest picture of what's actually coming out of taps here. When we come test your water, you'll see your home's exact number with your own eyes.

What does hard water do to your Marble Falls home?
White, chalky buildup on faucets, showerheads, and glass
Spots and film on dishes no matter how much you rinse
Scale inside water heaters, dishwashers, and washing machines that shortens their life
Soap and shampoo that won't lather well — dry skin, dull hair, stiff laundry
More detergent, more bottled water, more cleaning — small costs that add up
Why is Marble Falls water so hard?
Marble Falls sits in the Texas Hill Country, where water moving through limestone and carbonate rock dissolves heavy amounts of calcium and magnesium — the two minerals that make water hard. The Highland Lakes that supply the city reflect that geology, which is why Marble Falls water tests very hard. It's perfectly safe to drink. At 13 to 14 gpg, though, it's tough on your home.

Marble Falls draws its water from the Highland Lakes system, the chain of Colorado River reservoirs running through the Texas Hill Country. Those lakes sit in limestone country, so the water comes loaded with calcium and magnesium — which is why Marble Falls tests very hard, at 13 to 14 gpg. The city is also one of the first in the area to build a direct potable reuse system through its "One Water" initiative, recycling water for future supply as the Highland Lakes face drought and the town grows fast. That's forward-thinking on supply — but recycled or not, lake-sourced Hill Country water is still hard water, and a home softener is what handles the scale and spotting it leaves behind.
Why Marble Falls families choose Aqua Life
We're a family-owned company, founded right here in 2010. For 15+ years we've tested more than 20,000 Central Texas homes and earned over 10,000 customers across the area. Not a national chain. Every system is backed by a lifetime warranty and an install warranty, plus a 3-day return window — we tell you about that return window up front, because you'll forget it's even in the contract. When something's not right, you call us, and we're local enough to actually show up.
Frequently Asked Questions for
Marble Falls, TX
Is Marble Falls water hard?
Yes — very hard. Across the Marble Falls homes we've tested, it runs about 13 to 14 grains per gallon, deep into the "very hard" range. That's why heavy scale buildup and spotting are so common here.
How hard is the water in Marble Falls, exactly?
In the homes we've tested it's about 13 to 14 grains per gallon, or roughly 220 to 240 parts per million. Anything over 10.5 gpg is considered very hard, so Marble Falls sits well above that line. The city doesn't publish an easy-to-find figure, so an in-home test is the surest way to know your number.
Why is Marble Falls water so hard?
Marble Falls draws from the Highland Lakes in the limestone-rich Hill Country. As that water moves through carbonate rock, it picks up the calcium and magnesium that make water hard. It's a natural result of the local geology.
Where does Marble Falls get its water?
Marble Falls's primary water source is the Highland Lakes system — the chain of Colorado River reservoirs in the Texas Hill Country. The city is also building a direct potable reuse system through its One Water initiative to add recycled water for future supply.
Do I need a water softener in Marble Falls?
At 13 to 14 gpg, most likely yes. Marble Falls's water is firmly in the very-hard range, so nearly every home sees heavy scale and spotting and benefits from a softener. A free water test confirms your home's exact level so you're not guessing.
Is hard water in Marble Falls safe to drink?
Yes. The minerals that make water hard aren't a health concern — it's safe to drink. The issue is what hard water does to your skin, your appliances, and your home over time, and at Marble Falls's hardness that wear adds up.
How much does a water softener cost in Marble Falls?
It depends on your home's size and water use, which is why we start with a free in-home test rather than a phone quote. You'll get clear options that fit your family and budget — no pressure.
Will a water softener fix the spots on my dishes?
Yes — those spots are mineral residue from hard water drying on the glass, and at Marble Falls's hardness they're especially stubborn. A softener removes the calcium and magnesium that cause them, so dishes come out clean without the film.
Do I need a softener if my house is brand new?
New construction doesn't change the water — a brand-new Marble Falls home gets the same very hard water as everyone else. Many builders here pre-plumb for a softener loop, which makes install simple, and putting one in early protects new appliances from day one.
How long does a water softener install take?
Most installs are done in a few hours the same day. If your home is pre-plumbed with a softener loop, it's even quicker.

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