The Best Water Filters in St. Louis

No More Waiting: Get a Complimentary In-Home Water Test from Cain Water Filters

Our innovative water filters are designed to eliminate filter replacements, helping you save up to $1,200 a year and minimizing the need for technician visits.


Cain Water Filters is a proud division of Cain Electric, who has been providing top-notch home electrical solutions in St. Louis for over 20 years.

Features and Benefits

A clock icon.

Permanent Filter

Enjoy a lifetime of clean water with our permanent filters, saving you both time and money over the long term.

A silhouette of a glass filled with water.

Effective Filtration

Our filters remove bacteria, viruses, chlorine, heavy metals, and more, ensuring your water is safe and healthy. Enjoy cleaner, better-tasting water for your entire household.

A heart with a plus sign next to it.

Health Benefits

Our system provides alkaline water, which is beneficial for your health, and retains essential minerals. Alkaline water improves hydration, detoxification, and overall well-being.

A light blue icon of a dollar sign and coins, indicating affordable water filters in St. Louis.

Convenient and Cost-Effective

With a one-time installation cost and minimal maintenance, our filters can be installed in under a day, offering a cost-effective solution for clean water and saving you up to $500 a year in bottled water.

A white background with a few lines on it

How it Works

1. Give Us A Call

2. We'll Provide Your Water Test

3. Filter Installed in One Day

4. Enjoy Toxin-Free Water For Life

Our advanced water filtration system utilizes natural minerals and cutting-edge technology to remove impurities from your water. Unlike traditional salt softeners, our virtual softener maintains the beneficial calcium while preventing scale build-up.

1. Give Us A Call

2. We'll Provide Your Water Test

3.  Filter Installed in One Day

4.  Enjoy Toxin-Free Water For  Life

A close up of a faucet with water running out of it, indicating clean water from Cain Water Filters in St. Louis

How You Know It’s Time For A Filter Replacement

Wondering if your water might not be as clean as it should be?

Look out for these common signs around your home:

Three water drops on a white background, representing water filtration services in St. Louis from Cain Water Filters

Water Spots on Glass and Countertops

Persistent water spots can indicate hard water or other impurities. This is a clear sign that your water quality may need improvement.

A light blue silhouette of a hot tub with steam coming out of it represents water heater filtration systems in St. Louis

Chlorine Odor

If you can smell chlorine whenever you turn on the tap, it's a sign that your water is treated but not safe to drink in large quantities. This indicates a need for additional filtration.

Three light blue cubes on a white background.

Chlorine Exposure

Prolonged exposure to chlorine through drinking, bathing, and showering can exceed safe levels. While chlorine makes your water safe to travel, it's not ideal for regular consumption.

Google G icon logo on a white circle

“Great job!! Quick and efficient. Even called to follow up to make sure everything was working for us!”

-Tina S.

“Fast, efficient, thorough, and reasonable. Easy to work with! Excellent work and experience!”

-Barbara R.
Google G icon logo on a white circle

“What a pleasant experience it was working with Stanley Cain. He was responsive, timely and so professional. Fixed our issues and had us back up and working very quickly. I will call them any and every time I need work done!!! Great company!”

-Sheri W.
Google G icon logo on a white circle

Fill Out For A Free Home Water Test

Sign up for a free in-home water test to see the difference Cain Water Filters can make. Our team will test for common impurities and provide you with a comprehensive report.

Contact Us

Comparison

Compared to traditional systems like Culligan and Springwell, Cain Water Filters offer:

A black infinity symbol on a white background.

Lifetime Warranty

No Water Filter replacement needed with our lifetime transferable warranty!

A clock icon in a black circle on a white background that represents timely responses from Cain Water Filters in St. Louis

Permanent filtration

Permanent filtration with minimal maintenance.

A water droplet with a plus sign on it, indicating healthy water from Cain Water Filters in St. Louis

Alkaline water

Alkaline water that retains essential minerals.

Areas We Serve

We’re proud to serve residential, commercial, and industrial clients in the Gray Summit, MO area. Get a free estimate or schedule an appointment today!

Arnold, MO | Chesterfield, MO | Ferguson, MO | Florissant, MO | Franklin County | Gray Summit, MO | Hazelwood, MO | House Springs, MO | Imperial, MO | Eureka, MO | Maryland Heights, MO | O’Fallon, MO | St. Charles County | St. Charles, MO | St. Louis, MO | St. Peters, MO | Wentzville, MO | Wildwood, MO

Counties of St. Charles, St. Louis, Franklin, and Jefferson for water filtration services in St. Louis

Frequently Asked Questions

  • How do Cain Water Filters compare to traditional water softeners?

    Cain Water Filters use backwashing technology, eliminating the need for salt or chemical treatments. This eco-friendly approach maintains essential minerals while preventing scale buildup, offering a healthier and more sustainable solution.

  • What contaminants do Cain Water Filters remove?

    Our filters effectively remove chlorine, bacteria, viruses, heavy metals, and other impurities, ensuring safe, great-tasting water for drinking, cooking, and bathing.

  • How often do I need to perform maintenance on the system?

    The only maintenance required is a simple backwash once a week. This process ensures the system remains efficient without needing filter replacements.

  • Is installation of Cain Water Filters difficult?

    No, our professional technicians handle the entire installation process, typically completing it within a day. We ensure the system is set up correctly for optimal performance.

  • Where are your services available?

    Cain Water Filters serves customers across Missouri, including St. Louis, Chesterfield, St. Charles, Wildwood, and nearby areas.

  • Are Cain Water Filters suitable for both homes and businesses?

    Yes, our filtration systems are designed to meet the needs of residential, commercial, and industrial properties, ensuring clean water for any application.

  • How much does it cost to install a Cain Water Filter?

    While costs may vary depending on the property, our system offers long-term savings by eliminating the need for regular filter replacements or expensive water softeners.

  • Does Cain Water Filters provide a warranty?

    Yes, we offer a lifetime transferable warranty, giving you peace of mind that your investment is protected.

  • How can I schedule a free water test?

    You can contact us through our website or by phone to schedule a free water test. Our team will assess your water quality and recommend the best filtration solution for your needs.

  • Can Cain Water Filters help with hard water problems?

    Yes, our system prevents scale buildup by retaining beneficial calcium without allowing it to cause deposits on appliances, extending their lifespan.

Ready to Experience Pure, Clean Water?

Don’t wait any longer to improve the quality of your water. Schedule your free in-home water test today and discover the benefits of Cain Water Filters. Enjoy safe, healthy, and great-tasting water for you and your family.