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Top-Rated Water treatment & purification system installers and replacers in Denver - Updated Nov 2026

Avatar for Watrdude Consulting
Watrdude Consulting
4.9(
47
)
Water Treatment & Purification System - Install or Replace

Serving Denver, CO and surrounding areas

Approved

In business since 2015

Free estimates

Credit card accepted

"Working with Watrdude was a wonderful experience. He is very professional and good at what he does. In about two hours not only did he and his son in law install my water filtration system but he also put in a gas line for a gas range. He is extremely reasonable with his pricing and worth every penny. I would definitely recommend Watrdude to anyone including my friends and family."
Commercial
Advanced Series Water Softener
Pro Series Reverse Osmosis - 5 stage
500 GPM Water Softeners
RO/DI system with pretreatment

+3

Response time1 day
6 neighbors recently requested a quote
Recommended by86%of homeowners
Avatar for American Plumbing & Sewer LLC
American Plumbing & Sewer LLC
4.9(
142
)
Water Treatment & Purification System - Install or Replace

Serving Denver, CO and surrounding areas

Approved

Super Service Award Winner

In business since 2023

Free estimates

Credit card accepted

"I trust Lanney implicitly. He has serviced my Rain Soft Water treatment system for years and my RO system, and will continue to do so. His knowledge and expertise are unmatched. Amy in the office is friendly, helpful and a joy to work with. I highly recommend them!"
Response time6 hrs
Response rate99%
24 neighbors recently requested a quote
Avatar for Leaf Home Water Solutions
Leaf Home Water Solutions
4.2(
202
)
Water Treatment & Purification System - Install or Replace

Serving Denver, CO and surrounding areas

Approved (Corporate)

In business since 2020

Free estimates

Warranties offered

"The installation was done quickly and done well. The customer service was very professional. The only negative of this transaction was the cost of the project. It was the cost they told me it would be but I was just surprised that a replacement water softener system would cost that much. Overall I would definitely recommend this company."
Leaf Home Water Solutions
Leaf Home Water Solutions
Will filtered water help me save money?
What does filtered water taste like?
How do I know what contaminants are in my water?

+44

149 neighbors recently requested a quote
Recommended by71%of homeowners
Avatar for Rooter Guy, LLC
Rooter Guy, LLC
4.6(
3,131
)
Water Treatment & Purification System - Install or Replace

Serving Denver, CO and surrounding areas

Approved

Super Service Award Winner

In business since 1995

Free estimates

Emergency services offered

"A burst hot water heater is a crisis. Rooter Guy had a man out within two hours of my phone call. He knew his business and explained my options. Within a couple of hours of starting work he had obtained a replacement and completed the installation. I thought the price was a little high, but the service and professionalism was outstanding."
sewer cleaning
1311 neighbors recently requested a quote
Recommended by91%of homeowners
Avatar for Compass Plumbing
Compass Plumbing
5.0(
33
)
Water Treatment & Purification System - Install or Replace

Serving Denver, CO and surrounding areas

Approved

Super Service Award Winner

In business since 2002

Free estimates

Warranties offered

"Honest and good work can be hard to come by. Jay will get the job done right for a very reasonable cost, and he is incredibly kind on top of all that. So far Compass plumbing has: split pipes in my en suite bathroom from a single to a double sink, moved water lines from the floor to the wall to accommodate a floating vanity, moved a toilet location in my basement, replaced a water pressure regulator that was causing water hammer, and fixed a leak coming from the line going to our fridge. Definitely my go-to plumber!"
Water Heating Systems
Navien Boiler
Response time2 hrs
Response rate96%
1 neighbors recently requested a quote
Avatar for Heart Heating, Cooling, Plumbing & Electric
Heart Heating, Cooling, Plumbing & Electric
4.7(
92
)
Water Treatment & Purification System - Install or Replace

Serving Denver, CO and surrounding areas

Approved

Super Service Award Winner

In business since 2019

Free estimates

Emergency services offered

"Roberto Ortiz Prestamo did an excellent job replacing our water line. We're very happy with his work. He replaced the plastic line with a copper line. The work was done quickly and accurately. We look forward to working with him in the future for any of our heating and cooling needs. We highly recommend him and his company!"
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+24

8 neighbors recently requested a quote
Recommended by81%of homeowners
Avatar for Franklee Plumbing LLC
Franklee Plumbing LLC
5.0(
12
)
Water Treatment & Purification System - Install or Replace

Serving Denver, CO and surrounding areas

Approved

Free estimates

Offers commercial services

"I had a great experience with Isaiah, the owner and plumber who installed my water heater. From start to finish, he was professional, knowledgeable, and did an excellent job. The installation was completed efficiently, everything was done correctly, and they made sure everything was working properly before leaving. He was friendly, respectful, and took the time to answer all of my questions. I highly recommend Isaiah to anyone looking for a reliable and trustworthy plumber. Great work and excellent service!"
3 neighbors recently requested a quote
Avatar for Pure Water Services
Pure Water Services
4.8(
14
)
Water Treatment & Purification System - Install or Replace

Serving Denver, CO and surrounding areas

Approved

Super Service Award Winner

In business since 2024

Free estimates

Warranties offered

"I recently hired Pure Water Services for a series of plumbing issues in our home that we purchased as a short sale and in dire need of repair. I couldn't be more satisfied with the service I received. From start to finish, the experience was timely and top-notch! First, they installed a new sink and disposal in our kitchen. The process was seamless, and the plumber was punctual, professional, and highly knowledgeable. He walked me through the installation, ensuring everything was done to my satisfaction. Next, we had a pesky shower leak that was causing damage to the ceiling below. Patrick quickly diagnosed the issue and made the necessary repairs. I appreciated his attention to detail and the effort to minimize disruption to our home. The leak was completely resolved, and weâ re relieved that further damage was prevented. Finally, we needed the pressure regulator on our sprinkler system replaced after the prior owner failed to winterize the system. Again, Patrick was efficient and thorough and ensured the value and system was functioning properly before leaving. Overall, the professionalism, expertise, and customer service provided by Pure Water Services were outstanding. I highly recommend them for any plumbing needs you may have. I will definitely be calling them again for future projects!"
Bradford White Water Heater
Response time1 day
Response rate95%
34 neighbors recently requested a quote
Avatar for Jim Needham Heating Cooling Plumbing & Drain
Jim Needham Heating Cooling Plumbing & Drain
4.5(
72
)
Water Treatment & Purification System - Install or Replace

Serving Denver, CO and surrounding areas

Approved

In business since 2018

Free estimates

Emergency services offered

"first jim needem was so professional, caring about my water situation. he immediately called me back and set up a service for a sunday. Ben came and i can not say enough about his patience,professionalism, caring and was so helpful with my situation. He took the time to educate us and help us understand the system. He checked all points of our water in our house. he also had some suggestions for the future which we will do. this company also has a person to extract water thru my insurance for my carpet. He left nothing out. His expertise and honesty was amazing. I hope everyone who reads this will use this company. If there were 20 stars they would definitely get them. I am so thankful for their customer service, and kindness. Thank you Jim and Ben colleen L in Broomfield colorado"
After
Furnace
Outdoor a/c (condensing) unit
Indoor furnace
Outdoor a/c (condensing) unit

+1

Response time2 days
18 neighbors recently requested a quote
Recommended by89%of homeowners
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