Serving the Texas Hill Country & San Antonio since 1989
WQA-Certified  ·  Texas Class 3 Licensed  ·  Open 24/7
Areas Served  ›  San Antonio

Water softeners and filtration in San Antonio, TX

San Antonio sits on limestone, and limestone means hard water. We have been softening, filtering and repairing it across the city and the northern suburbs since 1989.

Water softener installed in a San Antonio home
Local water

Why San Antonio water is hard

The city draws heavily on the Edwards Aquifer, which sits in limestone. Water moving through limestone dissolves calcium and magnesium on the way, and that dissolved mineral load is what hardness is. Municipal treatment makes the water safe and clear. It does not remove the hardness, because it is not a safety issue.

So the water arriving at a San Antonio tap is treated, chlorinated and reliably clean, and still hard enough to scale a water heater, spot your glassware and leave laundry stiff. Softening is the part the utility does not do for you.

North of Loop 1604 and out toward Bulverde and Helotes, a growing number of properties are on private wells instead. Those need a different conversation, because a well arrives with no treatment at all.

Salt free water conditioner compared with an ion exchange softener
What we do here

Services available in San Antonio

Everything we do is available across San Antonio and the surrounding suburbs, usually with same-week scheduling.

Water softeners installed and serviced in San Antonio and the Texas Hill Country

Water Softeners

Ion-exchange softening sized to your hardness reading, for city and well supplies.

Learn more →
Whole-house water filtration tanks and filter housings on a home water line

Whole-House Filtration

Carbon and sediment stages for chlorine, taste, odor and grit at every tap.

Learn more →
Under-sink reverse osmosis drinking water system

Reverse Osmosis

Under-sink RO for drinking and cooking water, removing the dissolved solids filtration leaves behind.

Learn more →
Repairs across the metro

We fix every major brand in San Antonio, at any hour

A large share of our San Antonio work is repairing and servicing systems somebody else installed, often for customers whose original company has since closed, been sold or stopped returning calls.

You do not have to replace a working system to get it looked at, and calling us does not void anything. If the valve is failing, the resin is spent or the brine tank has bridged, we will quote the repair before anyone mentions replacement.

Water softeners installed and serviced in San Antonio and the Texas Hill Country
Why Gaines

A local company, not a franchise van passing through

We have been testing and treating water in this part of Texas since 1989, and we answer the phone ourselves.

Serving San Antonio since 1989

Family-owned, locally operated, and still on the same phone number after thirty-six years.

WQA-licensed, Class 3 certified

Class 3 certified by the Texas Water Commission and licensed by the Water Quality Association.

Every major brand serviced

Rainsoft, Culligan, Rayne, Kinetico, Hague, Sears, General Electric and more, whoever installed it.

24/7 emergency repair

A failed system does not wait for business hours, and neither do we.

Free on-site testing

We test at your property, explain the numbers and put the recommendation in writing, at no charge.

Sized to your water

Capacity and stages chosen from your test result, not from a regional average or a catalogue page.

Nearby

We also serve these communities

If you are close to San Antonio and not listed, call anyway. We probably cover you.

New Braunfels, TX

City and well supplies across Comal County.

View page →

Boerne, TX

Kendall County, Trinity aquifer, fast-growing and hard.

View page →

Texas Hill Country

The whole region, and how we cover it.

View page →
Common questions

Water questions from San Antonio homeowners

Hard enough to matter. The Edwards Aquifer supply that serves most of the city carries a substantial calcium and magnesium load, and the wider Hill Country region commonly runs 15 to 20+ grains per gallon. Your own figure depends on which part of the city you are in, which is why the test is free.

It is not a safety question, the municipal supply is treated and safe. It is an equipment and comfort question. Softening protects your water heater and appliances, cuts soap use, and stops the film on glassware, skin and laundry.

Because it is chlorinated, which is what makes it safe to drink. A carbon filtration stage removes the residual chlorine and the smell that comes off a hot shower. A softener will not touch it.

Yes, plus the suburbs and the Hill Country beyond, Boerne, Bulverde, Spring Branch, Helotes, New Braunfels, Canyon Lake and further out to Kerrville and Fredericksburg.

Considerably. A private well arrives untreated, so alongside hardness you may have iron, manganese, sulfur, sediment or bacteria. That needs a multi-stage system in a specific order rather than a softener on its own.

Usually within the same week for a free test, and immediately for an emergency repair. We keep 24/7 availability for failures that cannot wait.

Water softeners and repair in San Antonio, in short

San Antonio water is hard all year. The Edwards Aquifer that supplies most of the city runs through limestone, and limestone means calcium and magnesium, which is exactly what hardness is.

San Antonio Water System treats the supply to make it safe, not soft. Hardness passes straight through municipal treatment to your tap, which is why softening is a separate job that falls to the homeowner.

Typical San Antonio hardness sits in the mid to high teens in grains per gallon and can run higher depending on which wells are feeding your part of the city at the time.

That variability matters. Blend ratios shift seasonally, so a San Antonio household can notice scale and lather changing through the year even though nothing in the house has changed.

Chlorine and chloramine are the other common San Antonio complaint. They are there for good public health reasons, but they affect taste and smell, and carbon filtration is what removes them.

Our niche in San Antonio is repair as much as installation. We service every major brand, including systems we did not install, which matters in a city with decades of equipment from companies that have come and gone.

Emergency work runs around the clock. A leaking softener or a bypassed system in San Antonio is a today problem, so we carry 24/7 callout across the metro.

Scale is the slow cost. Water heaters, dishwashers, washing machines and coffee equipment all work harder on untreated San Antonio water, and they fail sooner than they should.

Sizing is arithmetic, not opinion. People in the house times daily use times grains per gallon gives the load, and the softener is sized to regenerate every three to five days rather than constantly.

Salt-free conditioners come up often in San Antonio. They reduce scale but do not remove hardness, so a test afterwards still reads high. Both have a place, and we will say honestly which suits you.

Drinking water is usually handled separately. A reverse osmosis tap deals with taste and dissolved solids at the kitchen sink far more cheaply than trying to polish the whole house.

Some San Antonio properties on the outskirts are on private wells rather than city supply. Those need testing for iron, sulfur and bacteria before anything is specified, because the sequence of treatment changes entirely.

We have worked across San Antonio and the Hill Country since 1989 as a family business, with WQA-certified and Texas Class 3 licensed technicians.

Testing is free and carries no obligation. Plenty of San Antonio visits end with us explaining the numbers and recommending nothing at all.

San Antonio issueWhat you noticeWhat fixes it
HardnessScale, spotting, poor latherCorrectly sized ion-exchange softener
Chlorine and chloraminePool smell, flat tasteWhole-house catalytic carbon
Dissolved solidsFlat drinking waterReverse osmosis at the kitchen tap
Aging equipmentConstant regeneration, salt useRepair or resize, any brand
Seasonal blend changesHardness seems to shiftRetest and adjust settings
Outlying private wellsStaining or odorTest first, then sequence treatment

Common questions

How hard is San Antonio water? Generally mid to high teens in grains per gallon, which is hard to very hard, and it varies across the city and through the year.

Does SAWS soften the water? No. Municipal treatment makes San Antonio water safe to drink. Hardness is not removed and reaches your tap unchanged.

Do you repair other companies systems? Yes. Repair on any brand is a large part of what we do in San Antonio, including equipment we did not install.

Is there a callout charge at night? We run 24/7 emergency service and will be clear about any charge before we come out.

Check any of this against the primary sources:

Free water test in San Antonio

Twenty minutes at your property, your hardness number in writing, and an honest recommendation. No charge and no obligation.