ServicesUnder-sink reverse osmosis
Under-Sink Reverse Osmosis in Lewisville
Clean-tasting water for drinking and cooking, from its own faucet at your kitchen sink. We fit the system so the tubing runs clean, the drain connection stays quiet and the cabinet stays dry for years, not just for the first week.

What reverse osmosis does at your sink
A reverse osmosis system pushes your water through a series of filters and a fine membrane, then stores the finished water in a small tank under the sink. It reduces dissolved minerals, chlorine taste and many trace contaminants, including lead that can come from older plumbing inside a house. You get it from a separate faucet, so the rest of your home runs on ordinary tap water.
It is the right call when your main concern is the water you drink, brew coffee with and cook in. If the issue is chlorine smell in the shower or staining on fixtures, whole-house carbon filtration or iron and sediment filtration may fit better. When you are not sure, we suggest water testing first so the system answers a real question.
Most of what decides how long an RO system lasts happens during installation. A drain saddle in the wrong spot, a kinked line or a fitting pushed in a few millimeters short will show up months later as noise, slow flow or a damp cabinet floor. We take our time on those parts.
What the installation includes
- A cabinet plan before anything is cut
- We look at your plumbing, disposal, trash pullout and storage, then place the filter housing and tank where they are easy to reach for future filter changes.
- Faucet mounting to suit your counter
- We use an existing sprayer or soap hole where we can. Granite, quartz and other stone counters get a slow, water-cooled bore with the right bit so the edge stays clean.
- A drain connection that stays quiet
- The drain saddle goes above the trap and away from the disposal outlet, sized and aligned to the pipe. That placement is what keeps gurgling and backflow away.
- Short, tidy tubing runs
- Lines are cut square, trimmed to length and routed without tight bends, then secured so nothing rubs or sags against the cabinet floor.
- Tank pressure set and membrane flushed
- We check the tank's air charge before filling and flush the first tanks to drain, so your first glass tastes the way it should.
- Leak check and cleanup
- Every fitting is inspected under pressure, a dry paper towel goes along each joint, and we leave the cabinet and counter as clean as we found them.
Signs an under-sink system makes sense
You buy bottled water out of habit
If the tap is fine for washing but nobody wants to drink it, a dedicated faucet usually ends the cases of bottles in the garage.
Coffee and ice taste off
Chlorine and dissolved minerals carry straight into coffee, tea and ice. Reverse osmosis removes most of that flavor.
Your home has older plumbing
Some homes built decades ago still have original supply lines or fittings that can add metals at the tap. A test tells you whether that is happening in your house.
An old system is noisy or slow
Constant trickling, a gurgling drain or a tank that never fills often points to a worn membrane or a poor original install, both of which we can correct.
Someone in the house wants extra assurance
Families with infants or anyone watching what they drink often like knowing the kitchen water has been through one more careful step.
How the day runs
- 1
A conversation by phone
We ask about your sink, counter material and what you want from the water. If testing would help, we say so before recommending a system.
- 2
Arrival and protection
We clear the cabinet with you, lay down a mat and towels, and shut off the cold supply at the angle stop.
- 3
Fitting and routing
The faucet, feed valve, drain saddle, filters and tank go in, with each line cut and seated fully into its fitting.
- 4
Fill, flush and check
We pressurize the system, flush the membrane, and check every joint for moisture before the first tank goes to your glass.
- 5
A short handover
We show you the shutoff, how the filters come out, and when each stage is typically due for replacement.

What moves the price
We price each kitchen after a phone conversation about your setup, and you hear the full figure before we start. The system itself is one part of the cost; the rest comes from what your sink and counter ask of the installation.
- The system you choose
- Number of filter stages, tank size and options such as a remineralizing stage or a permeate pump all change the equipment cost.
- Counter material
- Drilling stone or quartz takes more time and tooling than using an existing hole in a sink deck.
- Extra connections
- Running a line to a refrigerator ice maker or a second faucet adds tubing, fittings and labor.
- Condition of the plumbing
- A worn angle stop or corroded drain section is better replaced now than left under a new system, and we will point it out with you first.
Questions about under-sink reverse osmosis
Something not covered here? (972) 632-3143
Does a reverse osmosis system waste water?
It sends some water to the drain to rinse the membrane, which is how it keeps working. Newer designs and a permeate pump reduce that amount noticeably. We can talk through the options that fit your priorities.
Will it fit under my sink with a disposal?
In most kitchens, yes. We plan the layout around the disposal and drain so the tank and filters sit to one side, leaving the cabinet usable and the filters easy to reach.
How long do the filters and membrane last?
The sediment and carbon stages wear out first because they protect the membrane, and most households swap them roughly every twelve months. The membrane itself holds up longer, often a few years, depending on what is in your water and how much you draw from the faucet. Our filter replacement and maintenance visits keep each stage on track.
Does RO water taste flat?
Some people notice it tastes very clean or slightly flat because the minerals are removed. A remineralizing stage adds a little back for a rounder taste if you prefer it.
Should I test my water first?
If you have a specific worry, such as lead from old plumbing or unusual taste, testing first is worthwhile. A lab result shows whether reverse osmosis actually addresses your concern. It also gives you real numbers to hold the filtered water up against once the system is running.

Ready for better water at your kitchen sink
Tell us about your sink and counter, and we will explain what a careful installation looks like in your home. We serve Lewisville and the surrounding area, including Flower Mound and Highland Village.