Water Treatment · Katy, TX
Water softeners & filtration in Katy
Katy homes get water from the City of Katy or from one of the many MUDs around it, so the right system depends on your own tap.
What public reports say about Katy water
- The City of Katy (public water system #1010017) says its drinking water comes from groundwater, according to its 2023 Consumer Confidence Report.
- The City reports that it has held a Superior Water System rating for more than 30 years.
- Many Katy-area neighborhoods are served by MUDs that publish their own annual reports, so there isn't one hardness number for Katy.
Water varies by home, utility and MUD. Figures come from the public reports linked below.
How we help Katy homeowners
We test your water first, then recommend a softener, whole-home carbon filter, reverse osmosis or a combination that fits what your tap actually shows.
- Water softener installation and whole-home carbon filtration: manufacturer warranty + 1-year labor.
- Reverse osmosis drinking water at the kitchen sink.
- Free mailed water test: the mailed test is free. Booking takes a $20 deposit, credited toward your system when installed; non-refundable if you choose not to install.
- Financing available, subject to approval.
- See all packages.
Seasonal offer: From Nov 18, 2026 to Jan 31, 2027, get $150 off the Softener + Carbon + RO package or the Premium Whole-Home package. The offer does not apply to other packages.
Start a free water consult Call (832) 639-4127
Related reading: Water by community: Fort Bend & West Houston
Common questions
Is Katy water hard?
It depends on whether you’re on City of Katy water or a MUD, and which wells supply it. A mailed water test gives your actual number.
Where do I find my Katy water report?
The City of Katy posts its annual Drinking Water Quality Report on its website. If you’re in a MUD, check your MUD’s site or your water bill for its Consumer Confidence Report.
Do you install water softeners in Katy?
Yes. We install water softeners, whole-home carbon filtration and reverse osmosis in Katy and across homes within 35 miles of Richmond, TX.
What does the water test cost?
The mailed water test is free. Booking takes a $20 deposit, credited toward your system when installed; it is non-refundable if you choose not to install. There is no obligation to buy a system.
How much do systems cost?
The Water Softener starts at $2,589. A standalone under-sink RO is $795, and the RO add-on is $595. Essentials, Softener + Carbon, Softener + Carbon + RO, and Premium are tiers quoted after your free mailed water test. A written proposal after your water test confirms the price for your home. You pay 30% when you approve the proposal (that orders your system, which ships to your home) and the remaining 70% after it is installed and working. From Nov 18, 2026 to Jan 31, 2027, get $150 off the Softener + Carbon + RO package or the Premium Whole-Home package. The offer does not apply to other packages.
How long does installation take?
After you approve the written proposal, a 30% deposit orders your system, which ships to your home. A licensed installer then does a quick on-site reading to confirm your numbers and installs the system. We will give you a scheduled install date once the equipment is on the way. Call (832) 639-4127 if you want to talk through what to expect for your package.
Do I have to add salt?
Yes, if you choose a salt-based softener. It uses salt to remove hardness minerals (calcium and magnesium), and you add salt to the brine tank periodically. A salt-free conditioner does not remove hardness the same way, so a hardness test still reads hard. We recommend a system after your mailed water test.
Is financing available?
Financing available, subject to approval. See our financing page. We do not publish rates on this page.
Sources: City of Katy: Annual Drinking Water Quality Report · City of Katy: 2023 Consumer Confidence Report (PDF)
Areas we serve: Sugar Land · Richmond · Rosenberg · Fulshear · Missouri City · Katy · Houston