We've tested the water here ourselves
We don't just repeat the city's number — we measure it. Across more than 400 Round Rock homes we've tested, we consistently see hardness right around 10 to 11 grains per gallon, which lines up closely with what the city reports. When we come test your water, you'll see your home's exact number with your own eyes — and because the city's own figure and ours both land in the very-hard range, there's no guessing about whether Round Rock has a hard water problem.

What does hard water do to your Round Rock 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 Round Rock water so hard?
Round Rock's water is mostly surface water, and it picks up minerals along the way. The city's main supply is Lake Georgetown, topped up from Lake Stillhouse Hollow through a 32-mile pipeline, plus a small share of Edwards Aquifer groundwater and Lake Travis water through a regional partnership with Cedar Park and Leander. As that water moves through the limestone Central Texas sits on, it collects calcium and magnesium — the two minerals that make water hard. The city is clear that this hardness won't corrode your pipes, and the water is perfectly safe to drink. But those minerals still build up as scale on fixtures and inside appliances, which is the part that wears your home down over time.

Round Rock didn't always have the water it does now. Back in 1978, a long drought dried up the city's groundwater wells and Round Rock briefly went without water — which is what pushed the city to build out the surface-water supply from Lake Georgetown it relies on today. It's a good reminder that the water coming to your tap travels a long way and through a lot of rock before it gets there, picking up minerals the whole route.
Why Round Rock 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
Round Rock, TX
Is Round Rock water hard?
Yes — very hard. The City of Round Rock reports its average hardness at around 11.5 to 13 grains per gallon, and in the homes we've tested we see about 10 to 11. Both are well into the "very hard" range, which is why scale and spotting are so common here.
How hard is the water in Round Rock, exactly?
The city reports roughly 11.5 to 13 grains per gallon (about 197 to 222 parts per million), and our in-home tests come in around 10 to 11. Anything over 10.5 gpg is considered very hard. A free water test gives you your home's exact number.
Why is Round Rock water so hard?
Round Rock's water is mostly surface water from Lake Georgetown and Lake Stillhouse Hollow, with a little Edwards Aquifer groundwater and Lake Travis water mixed in. As it moves through Central Texas limestone, it picks up the calcium and magnesium that make water hard.
Where does Round Rock get its water?
Primarily from Lake Georgetown, which is supplemented from Lake Stillhouse Hollow through a 32-mile pipeline. The city also uses a small amount of Edwards Aquifer groundwater and accesses Lake Travis through the Brushy Creek Regional Utility Authority partnership with Cedar Park and Leander.
Does hard water in Round Rock damage my plumbing?
The city notes the water is balanced so it won't corrode your pipes, and it's safe to drink. What hard water does do is leave mineral scale that builds up in water heaters, dishwashers, and washing machines, which shortens their life — that's the practical reason most homes here treat it.
Do I need a water softener in Round Rock?
If you're seeing scale on fixtures, spotty dishes, or dry skin, a softener will help. At 10 to 13 gpg, most Round Rock homes benefit from one. A free water test shows you your home's exact level so you're not guessing.
Is hard water in Round Rock safe to drink?
Yes. The minerals that make water hard aren't a health concern — the city confirms it's safe. The issue is what hard water does to your skin, your appliances, and your home over time.
How much does a water softener cost in Round Rock?
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. 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 Round Rock 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.

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