Reverse Osmosis Drinking Water Systems in San Marcos, TX

Clean drinking water at the kitchen sink. Under-sink reverse osmosis systems installed, serviced and re-filtered.

Reverse Osmosis in San Marcos

Softened water is great for pipes and showers, but most people do not love drinking it, and even good municipal water in the Hill Country carries dissolved minerals and a chlorine taste that bottled water customers are paying to avoid. A reverse osmosis system under the kitchen sink fixes that at the one tap that matters for drinking and cooking. It pushes water through a membrane fine enough to remove the dissolved solids a filter cannot, polishes it with carbon, and stores it in a small tank so there is clean water ready at a dedicated faucet, with a line to the fridge and ice maker if you want it. We install reverse osmosis drinking water systems across Comal County, in new homes around New Braunfels and Bulverde and in established kitchens from Seguin to San Marcos. We mount the unit where it can be serviced, drill or use an existing hole for the faucet, run the drain connection properly, pressurize and sanitize the tank, and set you up on a filter and membrane schedule. We also service and re-filter RO units that are already in the house.

Reverse Osmosis Drinking Water Systems in San Marcos, TX

Water treatment in San Marcos

San Marcos is the Hays County seat northeast of New Braunfels, a college town built around Texas State University and the spring-fed San Marcos River, with fast-growing subdivisions on its west and south sides and ranch land climbing into the Hill Country beyond. City water here is drawn from limestone aquifers and surface supplies and is hard, so the everyday complaints are the same ones we hear in Comal County: scale on the water heater, cloudy shower glass, a chlorine taste at the tap. The housing mix shapes the work. New neighborhoods like Blanco Vista and Kissing Tree come with softener loops and no softener; the rental houses and older homes near the university have equipment of unknown age that nobody has serviced; and the acreage out toward the Devils Backbone and the Hays County hills is on private wells with iron, sulfur and sediment on top of the hardness. We install and repair softeners, add whole-house filtration and reverse osmosis at the kitchen sink, and treat well water after a proper test. Many of our San Marcos customers are newcomers and retirees who have no local referral yet. We test first, explain the numbers and quote what the water actually needs. Tell us where the house is and what the water is doing and we will give you a straight answer and a real price.

  • Under-sink RO systems with a dedicated drinking-water faucet
  • Optional line to the refrigerator and ice maker
  • Drain connection, tank pressure and production rate checked at install
  • Filter and membrane replacement on existing units, most brands
  • Tank sanitized at every service
  • Pairs with a softener so the membrane lasts

Need reverse osmosis elsewhere? See all of our San Marcos services or reverse osmosis across Comal County.

Reverse Osmosis in San Marcos

Tell us what the water is doing and we’ll call you back. Local San Marcos service.

Prefer to talk now? Call or text (830) 356-2377.

Areas We Cover in San Marcos

On city water or on a well, in town or out on the acreage: if it’s in or around San Marcos, we come to your property.

  • Blanco Vista
  • Kissing Tree
  • Willow Creek
  • Hunter
  • Redwood

Common Water Problems in San Marcos

The water problems we see most around here, and how we handle them.

New subdivisions on hard city water

The new neighborhoods on the west and south sides of San Marcos come with a softener loop in the garage and limestone-hard water on the tap. New water heaters scale within months. A demand-regenerating softener sized to the household, set on the loop, is the standard fix, with a carbon stage for the chlorine taste.

Rentals and older homes with unknown equipment

Around the university, houses change hands and tenants often, and the softener in the utility room may not have been touched in years. We check whether it is actually softening, service or rebuild it when that makes sense, and say plainly when it is time to replace.

Wells in the hills west of town

Out toward the Devils Backbone and the Hays County hills, homes are on private wells that commonly carry iron, sulfur odor or sediment with the hardness. Those need a proper test and a treatment train built in the right order, not a softener installed alone.

Reverse Osmosis in San Marcos: FAQs

Do you serve San Marcos?
Yes. We cover San Marcos and the surrounding Hays County area, including Blanco Vista, Kissing Tree, Willow Creek, the neighborhoods near the university and the well homes in the hills west of town. Tell us where the property is and we will confirm.
Is San Marcos city water hard?
Yes. It comes from limestone aquifers and surface supplies and carries the dissolved calcium and magnesium that scale water heaters and fixtures. It is safe to drink; a softener is about protecting plumbing and making soap and shampoo work. We test so you know the number and can size the unit correctly.
We are retiring to a San Marcos subdivision. What should we do about the water?
Start with a test, which tells you the hardness and chlorine level. Most new homes here want a softener on the loop the builder left and, often, a reverse osmosis unit at the kitchen sink for drinking water. We quote only what the water calls for and install in one visit.
Do I need reverse osmosis if I already have a water softener?
Only if you want better drinking water. The softener handles scale and soap performance for the whole house; it does not improve taste and leaves dissolved solids in the water. An RO unit at the kitchen sink is the usual answer for people who are buying bottled water or dislike the taste of softened water.
How often do RO filters and the membrane need changing?
The prefilters and carbon stages are typically changed on a regular yearly schedule, and the membrane less often, depending on the unit and how hard the incoming water is. We set the schedule when we install, and if your water is softened first the membrane lasts longer.
Can you run the RO water to the fridge?
Yes. We can run a line from the RO system to the refrigerator so the water and ice dispenser use filtered water. It is a common add-on at install and can usually be added to an existing unit.

Need Reverse Osmosis in San Marcos?

Call for a fast quote. We test first, come to your property, and quote only what your water needs.

📞 Call or text (830) 356-2377