Call Us

+1 (605) 628-2315

Email Us

aaapurewater@gmail.com

Opening hours

Mon to Sat: 8AM - 5PM

SINCE 1978

South Dakota families have trusted AAA Pure Water for nearly 50 years — treating hard water, iron, and bad taste one home at a time.

TRANSPARENT PRICING

No hidden fees or surprise add-ons. You get a clear quote on equipment, installation, and service before any work begins.

About Us

COMMITTED TO CLEANER, SAFER WATER IN EVERY SOUTH DAKOTA HOME

Hard water, iron staining, and rotten-egg odor are facts of life across South Dakota. Since 1978, AAA Pure Water has tested, treated, and serviced water systems for homes and businesses across the state.

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About Us
Licensed, insured, and certified in the state of south dakota

48 Years. One Standard.

For nearly five decades and almost five thousand system installations across South Dakota, we’ve helped homeowners enjoy cleaner, better water with dependable treatment solutions built for their homes and families.

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Contact Us
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Years Serving South Dakota

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Completed Installations

Our Service

We Provide

Installation
Maintenance
Maintenance

Our high-performance water softener systems are built to tackle South Dakota’s hard water, helping protect your home while delivering softer water from every tap.

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Our reverse osmosis systems provide crisp, great-tasting drinking water by reducing unwanted contaminants and impurities right from your tap.

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Our whole-home filtration systems reduce unwanted contaminants, tastes, and odors to deliver cleaner, fresher water from every tap in your home.

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Our Family

Meet Our Expert

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What Our Clients Say

Review From Our

Customers
Neighbors
Friends
Customers
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AAA Pure Water is a great product! Our family has thoroughly enjoyed their filtration, softener system, and RO system for clean drinking water! Service is amazing and they always respond in a timely manner!

Bailey Belisario

Homeowner
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Love absolutely everything about my new water systems. They were very professional, easy to work with and have answered any and all questions I have had! Highly recommend a system with this company!

Libby Burghardt

Homeowner
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Fantastic customer service starting from scheduling a demo to corresponding with the service manager to install the machines—fast installation and most importantly the quality of product is amazing!! I will NEVER go without soft water & RO.

Needa Halling

Homeowner
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They were quick and on the ball when the time has come to change our filters and put a new faucet in. Guys are excellent at what they do and explain everything in detail

 Brad Skaalerud

Homeowner
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The service was fantastic, and the filtration system is incredible. My water has changed dramatically for the better! I’m completely satisfied and won’t hesitate to recommend it.

 Dayton Gardner

Homeowner
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What makes this water filtration company worth it, is they are so considerate about your health, your needs when it comes to affordability and payment options, as well as they educate you properly of how the system is installed, how its different, and how it can benefit everyone in the household. They go above and beyond when it comes to the installation process.

 Brooke N.

Homeowner
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We have used this agency for the last 3 years or more and they makenit easy, they are sleedy and organized, and dont mind my pets and kids and genial chaos while they work. The water is also noticeable better;)

Jessica McLaughlin

Homeowner
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I had a great experience from start to finish. The team was professional, knowledgeable, and very helpful throughout the entire process. My youngest daughter suffers from eczema and very dry cracking skin. This system literally changed her life. Couldn’t thank them enough for everything they have done. Superior product and superior service.

 Jayson DeKnikker

Homeowner
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Dayton was our sales person, he was very professional. We opted in for the whole home water softener and the RO system, it’s grade A! They came and installed the system very fast and the installer was very knowledgeable! I highly recommend AAA!

Carson Burghardt

Homeowner
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The team at AAA were great to work with. They were thorough in their demo and explained how all of their systems work. They did a great job installing our softener and RO system! Definitely recommend their services.

Dylan Duvall

Homeowner
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We have been customers for almost six years. They just installed an upgraded system in our house. The service and communication is great and they answer back fast with any issues. We also love that they come change the filters in our RO system each year.

Gregg Rempe

Homeowner
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Ric did an excellent job installing my water softener. He took his time, made sure everything was done right, and clearly explained how everything works. The system works great. Highly recommend!

Ezekiel Gutierrez

Homeowner
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I highly recommend AAA Pure Water! This family owned company goes above and beyond for their customers. After troubleshooting some issues with our system for a few months, they continued to work on fixing the issue every time we called. Not only that, but they replaced the entire RO system for free to ensure we had a properly working system. We are so thankful for their outstanding customer service and dedication to working hard until the problem was solved. This company stands by their performance and will continue to ensure your system is properly working for years to come. 10/10 recommend AAA Pure Water in Watertown, SD for your clean and purified drinking water needs!

 Kaylene Simon

Homeowner
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Great product, great service and amazing company to work with. Wouldn't trust anyone else to handle my water treatment services and needs.

 Jody Johnson

Homeowner
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I couldn’t be happier with the experience I had with this water softener company. From start to finish, everything was handled professionally and efficiently. The team was knowledgeable, explained everything in a way that actually made sense, and never made me feel pressured. The difference in our water quality was noticeable almost immediately—softer skin, cleaner dishes, and no more buildup on fixtures. Installation was quick, clean, and done right the first time. What really stood out was the customer service. They genuinely care about making sure everything is working perfectly and that you’re satisfied long after the install.
If you’re on the fence about getting a water softener or choosing a company, this is the one to go with. Highly recommend!

Aaron

Homeowner
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Love the service, system works above expectations and would recommend for others to check out and have their system

Tyler Pickrel

Homeowner
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Excellent service, very knowledgeable on their products and available when you need them. Highly recommend.

 Andrew Stoe

Homeowner
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I am really pleased with my system. I have a dual tank with Reverse Osmosis! There is nothing better than a super clean shower and pure, substance free drinking water. The first day my grandson stood on a chair at the kitchen faucet and drank glass after glass until he was full (he didn't like the taste prior). The only downside? Some hotels and Bed n Breakfasts locations don't have this system... leaving travelers like myself feeling 'grungy' after showering and smelling chlorine in the air while traveling.

Bryon Dahle

Homeowner
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