St. Louis, MO

Better Water Starts at Home

Whole-home softening and filtration, plus reverse-osmosis drinking water, installed by a professional local installer. One honest phone call. An all-in price before anyone shows up. No pressure, ever.

Quality equipment All-in price upfront Same-week install

What sets us apart

Quality equipment, right-sized to your home
All-in price on one honest phone call
Professional local install, usually same week
All-in quote on one honest phone call
No payment until the job is done
Get Your Free Water Assessment →
Why St. Louis needs this

Three things in your water you can see, smell, and test for.

Most homeowners do not know what is in their supply until they look it up. The public data is there, and it tells a specific story for St. Louis. These are the three most common water problems we fix here.

Very hard water from limestone geology

The Mississippi and Missouri river valleys sit on thick limestone bedrock. St. Louis metro water is consistently hard, often 15 or more grains per gallon. Scale on fixtures, cloudy glassware, water heaters working overtime. A whole-home softener handles all of it.

Chloramines in the municipal supply

Missouri American Water uses chloramines, a chlorine and ammonia blend, for disinfection. Unlike plain chlorine, chloramines do not cook off when you boil water and leave a distinct chemical taste and smell. Whole-home carbon filtration removes them before water reaches any tap.

Aging housing stock and infrastructure

A large share of St. Louis housing dates from before 1978, when lead solder was standard. Older distribution lines in parts of the city and inner suburbs have known lead service line concerns. Under-sink reverse osmosis is the most reliable at-the-tap protection for drinking water.

Honest process, side by side

Same outcome. None of the theater.

The brand-name guys are not selling better water. They are selling a big ad budget and a salesman in your living room for three hours. We cut the theater and pass the savings to you.

 
Gateway Water Systems
The brand-name guys
In-home sales visit
None, remote & transparent
A salesman in your kitchen for three hours
How you get your price
All-in quote on one phone call
"Schedule a consultation"
Pricing transparency
Clear installed price before you commit
Quote arrives after the in-home pitch
Carbon & resin grade
Premium media, right-sized to your water
Often cheaper imports
Premium parts, not premium markup

Quality equipment, honestly priced.

We spec each system around your home and your water, and we tell you exactly what you are getting and why. The savings come from cutting the sales theater, not the equipment.

Whole-home water filtration system

Your complete bundle

Whole-home softening and filtration tank, brine tank, and under-sink reverse osmosis with a dedicated faucet.

01

Coconut-shell carbon

Targets chloramines, chlorine, taste, and odor compounds before water reaches any fixture. Coconut-shell carbon is more porous and longer-lasting than coal-based alternatives.

02

Ion-exchange resin

Removes dissolved calcium and magnesium, the minerals that cause scale on fixtures, soap scum, and accelerated wear on water heaters and appliances.

03

RO membrane

A dedicated membrane at your kitchen tap removes dissolved contaminants including PFAS, lead, and anything that passes through whole-home filtration. Produces clean drinking water on demand.

04

Sized to your home

Tank, valve, and media are selected based on your home's flow rate and water chemistry, not a one-size-fits-all spec. We do not cut corners anywhere in the build.

How it works

From "what is in my water" to clean water, in three steps.

1

Get Your Free Water Assessment

Tell us your address. We pull the public data on your municipal supply and send a personalized report. No in-home test, no visit required.

2

One honest phone call

We review what is actually in your water, recommend the right system, and give you the all-in price on the spot. No pressure, no upsell.

3

Local install, same week

A professional local installer sets up your system, usually within the week. You do not pay a dime until the job is done and you are happy.

Where we work

Serving St. Louis and surrounding areas.

We are local. Every install is in our backyard, across St. Louis city, St. Louis County, and the surrounding communities.

See Our Service Area →

Why St. Louis homeowners choose us

Every install backed by real standards, not a sales pitch.

Honest water data

We pull the public water-quality report for your address and show you what is actually in your supply. No scare tactics, no invented problems, just the data.

Right-sized systems

Every system is specced to your water chemistry and your home's flow rate. Not a one-size-fits-all package pulled from a catalog.

Professional local install

A professional local installer, insured work, and you do not pay a dime until the job is done and you are happy.

Common questions

Straight answers, no sales runaround.

Why do you operate differently than the brand-name guys?

The model, not the equipment. We right-size each system to your home and your water, spec the components honestly, and give you a straight price on one call. No salesman in your kitchen for three hours, no bloated ad budget baked into the price. Same outcome, none of the theater.

Do I have to do an in-home sales appointment?

No. That is the whole point. We pull the public data on your water, review it with you on one phone call, and give you an honest price. No one comes to pitch you in your living room.

What areas do you serve?

We serve St. Louis, MO and surrounding areas across the metro. If you are in the region and are not sure your address is covered, just call us.

When do I pay?

Not until the job is done and you are happy. No deposit to get started.

See exactly what is in your water. Free.

No in-home visit, no obligation. We will send a personalized report on your home's water and an honest, all-in price if you want one.