Bottled-water taste, straight from your tap.
Drinking Water Systems in Kansas City — RO & Under-Sink Filtration
Reverse osmosis and under-sink systems that remove dissolved solids, lead, PFAS, and off-tastes from the water you actually drink. Compact, tankless options available — installed free.
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 it is
What Drinking Water Systems does for your home
A drinking water system polishes the small fraction of your water you actually consume — the glass you drink, the ice you drop in it, the water for coffee and cooking. Reverse osmosis forces water through a membrane fine enough to strip dissolved solids, lead, PFAS, nitrates, and the tastes municipal treatment leaves behind. Under-sink carbon systems handle chlorine and taste in a smaller footprint. Either way, you get bottled-water quality from a dedicated faucet, without the plastic waste or the weekly grocery run.
The signs
Signs your home needs Drinking Water Systems
If any of these sound familiar, a free in-home water test will tell you whether this is the fix.
- Tap water that tastes chlorinated, metallic, or faintly earthy no matter how long you let it run
- Concern about lead from older home plumbing or service lines common in pre-1986 KC homes
- PFAS and emerging contaminants that municipal treatment doesn't fully remove
- Coffee and tea that taste flat because the water carrying them is full of dissolved solids
- The cost and plastic waste of buying bottled water every week
How it works
Our Drinking Water Systems process
Four steps from free test to lifetime-backed system — no pressure, no surprises.
- 1
Free water test & taste check
We test your tap for chlorine, TDS (total dissolved solids), and lead risk, then have you taste water from a sample RO system so you can compare side by side.
- 2
RO or under-sink, sized to your space
We help you choose between a traditional tank RO, a tankless RO for tight cabinets, or an under-sink carbon filter — based on your water, cabinet space, and how much you drink.
- 3
Free professional installation
Our technicians mount the system under your sink, drill the dedicated faucet, connect to your cold line and drain, and sanitize everything. Install is free.
- 4
Annual filter & membrane service
RO membranes last 2–5 years; pre- and post-filters change annually. Our service plan handles the swaps so your drinking water stays pristine.
American-made parts
What goes into a Cathcart system
Every system is built with American-made components — control valves from Wisconsin, tanks from Ohio, resin from New Jersey, and carbon from Ohio.
RO membrane & carbon pre-filters
A semi-permeable membrane removes dissolved solids down to the molecular level; carbon pre-filters protect it and strip chlorine before it reaches the membrane.
Tankless RO option
For tight under-sink cabinets, a tankless continuous-flow RO delivers fresh water on demand without a storage tank — compact and quiet.
Dedicated air-gap faucet
A stainless dedicated faucet mounts beside your main tap, with an air-gap drain connection that prevents backflow into your drinking water.
Control Valve — Hanskraft (Wisconsin) · Tank — Enpress LLC (Ohio) · Carbon — Jacobi Group (Ohio) · Resin — ResinTech (New Jersey)
Is this you?
When to call us about Drinking Water Systems
- You buy bottled water for drinking even though you pay for tap water
- Your coffee and tea taste flat or bitter compared to a coffee shop
- You live in a home built before 1986 and worry about lead plumbing
- Ice cubes come out cloudy and taste like the freezer
- Your tap water tastes different — and worse — than it used to
- You're concerned about PFAS or forever chemicals in your supply
Pricing, honestly
No surprises, no high-pressure sales
Drinking water systems are the most affordable entry point — an under-sink carbon filter costs less than a tankless RO, and a traditional tank RO sits in between. We quote the exact system for your water and cabinet space after your free test, include professional installation at no cost, and offer financing if you're bundling with a whole-home system. No invented package prices — you'll see the real number before we start.
Ready for cleaner water?
Free quotes over the phone. Same-week installation across the Kansas City metro.
Real Kansas City reviews
What drinking water systems customers say
“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.”
“Coffee suddenly tastes the way it's supposed to. We didn't realize how much the tap water was holding the flavor back. Free install, clean job, no upsell.”
“Our 1950s house has old pipes and we wanted lead out of what the kids drink. The RO gives us total peace of mind and the water tastes great. Worth every penny.”
Drinking Water Systems questions
Frequently asked
What's the difference between reverse osmosis and an under-sink filter?
Does reverse osmosis waste water?
Will an RO system fit under my sink?
How often do I need to change the filters?
Can I connect the RO to my refrigerator for ice and water?
Where we work
Areas we serve with Drinking Water Systems
We install and service drinking water systems across 16 Kansas City metro communities on both sides of the state line.
Ready for cleaner water?
(816) 298-0839Free quotes over the phone. Same-week installation across the Kansas City metro.