Your water crosses 200 feet of KC limestone before it reaches your glass.
Cleaner water for every tap in your Kansas City home.
Cathcart Water designs, installs, and services whole-home filtration and softeners across the Kansas City metro — with 100% free professional installation on every new system.
Financing availablePay over time with monthly financing through Klarna.
Financing available with Klarna →Monthly financing through Klarna issued by WebBank, member FDIC. Subject to credit approval. Other CA resident loans made or arranged pursuant to a California Financing Law license. NMLS # 1353190.
What we do
Water treatment built for Kansas City homes
One system per job, sized to your home and your water. Free installation on every new system.
Whole-Home Water Filtration
Point-of-entry filtration that strips chlorine, sediment, and odor from every tap in the house.
Learn more →02Water Softeners
Ion-exchange softening that pulls hardness minerals out before they coat your pipes and fixtures.
Learn more →03Drinking Water Systems
Reverse osmosis and under-sink systems for bottled-water taste straight from the tap.
Learn more →04Service & Maintenance
Annual filter changes, salt refills, and tune-ups that keep your system running for life.
Learn more →05Pool Maintenance
Coming 2027Weekly balancing and seasonal opening & closing for KC's hard-water pools.
Learn more →
FAMILY-OWNED & LOCAL
Meet Keegan, Your Northland Neighbor
A husband, father, and proud Northland native, Keegan helps Kansas City families find the right water system with honest advice, straightforward pricing, and service you can count on.
Read our story →Our systems
System Options Built for KC Water
Three distinct system configurations — matched to your home's water and your family's needs.
Carbon Filtration + Softening
What it is: A carbon filter tank removes chlorine, chloramine, taste, and odor; a softener tank removes hardness minerals through ion exchange using salt.
Solves: Scale buildup, spots on dishes and glass, dry skin, chlorine taste and smell, shorter appliance life.
Best for: Homes with hard water that want both softer and better-tasting water at every tap.
Salt-Free Treatment
What it is: Conditions hardness minerals so they're less likely to stick and form scale. No salt, no brine tank, no wastewater.
Solves: Scale buildup on fixtures, pipes, and water heaters.
Note: Does not remove hardness minerals, so water won't feel "soft" the way softened water does.
Best for: Homeowners who want low maintenance and no salt.
Reverse Osmosis
What it is: An under-sink system that pushes water through a fine membrane for cleaner drinking and cooking water at one faucet.
Best for: Families who want bottled-quality water from the tap.
Not sure which system fits? Book a free in-home water test and we'll recommend one based on your results. [Client to confirm the brands/models he installs]
Why Cathcart
Free installation. Zero surprises.
The guarantees we keep on every system, every time — the reasons Kansas City homeowners call us first.
100% FREE professional installation on every new system ($500+ value)
Lifetime warranty on every new system
Manufacturer-backed warranties on parts
Transparent pricing — no high-pressure sales
No-obligation quotes — phone quotes available
Same-week installation across the metro
Family-owned and locally operated
American-made parts from WI, OH & NJ
How it works
From free test to clean water
Four steps, no pressure, no obligation — and the installation is on us.
- 1
Free in-home water test
We test for chlorine, hardness, pH, and sediment at your kitchen sink — no fee, no obligation.
- 2
System sized to your home
We match the tank and media to your household size, pressure, and what your test found.
- 3
Free professional installation
Our KC technicians install at your main line and walk you through operation — a $500+ value on us.
- 4
Lifetime support & service
Annual checkups and tune-ups keep the system running for the life of the unit.
Real reviews
Kansas City homeowners, in their words
Reviews from across the metro — Parkville, Lee's Summit, Independence, and the Northland.
“The chlorine smell in our shower is completely gone. My skin stopped itching within a week. The install crew was in and out in a morning and left everything spotless.”
“The scale on our shower glass is gone and our towels are actually soft now. We didn't realize how hard our water was until it wasn't. Install was free and the crew was professional.”
“Our water heater stopped popping within a month. Wish we'd done this years ago — the difference in the shower alone is worth it. Lifetime warranty sealed the deal.”
“We cancelled our bottled water delivery the week the RO went in. The water tastes better than anything we were buying. The tankless unit fit perfectly under our small sink.”
Where we work
16 communities across the Kansas City metro
Missouri and Kansas, both sides of the state line. Click your city for local water-treatment details.
Questions
Kansas City water, answered
How much does a whole-home water system cost?
Is installation really free on every new system?
What does the lifetime warranty cover?
Do I need a water softener, a filter, or both?
How fast can you get to my home?
What areas do you serve?
Do you service systems you didn't install?
Ready for cleaner water?
(816) 298-0839Free quotes over the phone. Same-week installation across the Kansas City metro.