ServicesReverse Osmosis
Reverse Osmosis in Lake Geneva
A reverse osmosis system under your sink gives you crisp water for drinking, cooking and ice from a faucet of its own. We fit it neatly so the cabinet stays useful, and we set your filter changes for spring and fall so upkeep stays simple.

Water worth pouring a glass of
Inside a reverse osmosis system, your household water pressure pushes water against a membrane with openings far smaller than a grain of salt. Dissolved minerals, metals and salts are held back and rinsed away, while the purified water moves on to a small tank. That is the water you drink, boil pasta in and freeze for ice. The system serves one faucet in the kitchen, and the rest of your plumbing carries on unchanged.
It makes sense when you are tired of buying bottles, or when your well or city supply has a flavor you would rather keep out of your morning coffee. In a home with hard water, a softener placed before the RO guards the membrane, and we can cover both options in one conversation.
We plan around the seasons. Winter groundwater runs cold, which slows how quickly a membrane fills the tank, so we size storage for January rather than July. Filter changes go on a spring and fall rhythm, so the system is fresh before the busy summer months.
What your reverse osmosis install includes
- Sediment and carbon prefilters
- These first stages trap grit and chlorine before either can reach the membrane. That protection is what lets the membrane last years rather than months.
- The RO membrane
- This is where the real work happens. It cuts dissolved solids and many of the contaminants people are concerned about with aging pipes and private wells.
- Pressurized storage tank
- A compact tank keeps treated water ready, so a glass or a pitcher fills at an even pace. We position it to leave space for your trash pull-out and cleaning supplies.
- Polishing filter and dedicated faucet
- A last carbon stage refines the taste before the water reaches its own faucet, in a finish picked to match the fixtures already at your sink. Granite, quartz and stainless each get the proper bit and a patient hand.
- Drain connection with air gap
- The concentrate line goes to your sink drain through a correct fitting, so wastewater has no path back into the system.
- Optional ice maker and refrigerator line
- For treated water at the refrigerator dispenser as well, we run a neat line over to it.
Signs reverse osmosis would suit your home
You are carrying bottled water home
Stacks of cases in the garage cost money and take effort. A dedicated RO faucet replaces them with water drawn right at the sink.
Coffee and tea taste flat or bitter
Chlorine and dissolved minerals alter the way coffee brews. The first pot made with RO water often tells you what you have been missing.
Cloudy ice and white crust on the kettle
That crust is mineral residue left when water boils or freezes. RO water leaves very little of it behind.
A report on your water raised a question
If your city report or a well result flagged nitrate, lead or high dissolved solids, we can explain what an RO system lowers and what it will not touch.
Older plumbing under the kitchen
Aging pipes and fittings are a common reason homeowners want one more stage of treatment at the tap they drink from.
What moves the price
No two kitchens are set up quite alike, so we price your install once we know the details. You get the quote written out line by line, and it holds for 30 days. If you would like to spread the cost, we offer financing through U.S. Bank Avvance, on approved credit.
Countertop and faucet hole
An unused sprayer hole is the simplest place for the new faucet. Boring through stone or quartz asks for more time and more care.
System configuration
A standard four or five stage unit is the lighter option. Adding a remineralization stage, or a permeate pump for low water pressure, raises the cost.
Extra lines
A line to the refrigerator or ice maker means more tubing, fittings and labor, especially when it has to pass through a floor or wall.
Plumbing condition
A worn shutoff valve or a tight drain layout sometimes has to be replaced first so the system can connect cleanly.
How the work goes
- 1
A phone conversation first
You tell us about your water, your sink and how your household uses it. We explain options and financing, and you get a free quote by phone.
- 2
A look under your sink
We check the cold supply valve, the drain, the cabinet space and your countertop material. If a shutoff valve is old or seized, we tell you before install day rather than during it.
- 3
Install day
We lay down a drop cloth, empty nothing you did not ask us to, and shut off only the cold line. Most installs are finished in part of a day, and the rest of your kitchen stays usable.
- 4
Flush, check and walk-through
We flush the new filters, check every fitting for drips and run the first tank. Then we show you the filter schedule and how the parts come apart, and payment is due once the install is complete.

Reverse osmosis questions
Does reverse osmosis waste water?
It uses some. The membrane keeps itself clean by sending part of the water to the drain. Current units are much more efficient than older designs, and a permeate pump can bring that ratio down further if it matters to you.
Will the water be stripped of all minerals?
Most dissolved minerals are taken out, which is why the water tastes so crisp. If you like a bit of mineral character, a remineralization stage puts calcium and magnesium back for flavor.
How often do the filters need changing?
The prefilters and the final polishing filter are usually replaced about once a year, and we suggest tying that to spring or fall so it is easy to remember. The membrane lasts a good deal longer, particularly when a softener shields it from hard water.
Do I need a water softener too?
Not always. If your home has hard water, a softener ahead of the RO keeps scale from building up on the membrane and helps it last longer. If your water does not call for one, we say so plainly rather than add equipment you do not need. Our Water Softeners page goes into more detail.
How long do I have to cancel once I sign?
Three business days. If you change your mind in that window, you can cancel. You also pay nothing until the install is finished.
What about a lake cottage that sits empty in winter?
In an unheated home, the system has to be drained before the first hard freeze or the membrane and tank can crack. We walk you through draining it in fall and starting it back up in spring.

Clean drinking water, poured from its own faucet
Describe your sink and your water, and we will lay out the system options and the financing that fits. We serve Lake Geneva and towns nearby, including Williams Bay, Elkhorn and Genoa City.