If you hire this pro, you’re covered by a money-back guarantee. Learn more
If you hire this pro, you’re covered by a money-back guarantee. Learn more
About
True Line Water helps Colorado homeowners improve the quality of the water throughout their entire home. We specialize in whole-home water filtration, water softening, and reverse osmosis systems tailored to your home and water quality.
We take an education-first approach: we test your water, explain what we find, and recommend solutions based on your actual needs—without high-pressure sales tactics.
Our systems are professionally installed by licensed plumbing professionals and backed by strong manufacturer warranties. We proudly serve Greater Denver, Douglas County, and Colorado Springs.
Know What’s in Your Water. Get started with a free in-home water test and personalized recommendation.
Overview
Current Top Pro
Hired 4 times
Serves Parker, CO
Background checked
9 employees
1 year in business
Business hours
Sun8:00 am - 8:00 pmMon8:00 am - 8:00 pm
Payment methods
This pro accepts payments via Cash, Credit card, PayPal, and Zelle.
Customers rated this pro highly for work quality, responsiveness, and value.
Exceptional 5.0
10 reviews
5
100%
4
0%
3
0%
2
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1
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Your trust means everything to us. Learn about our review guidelines.
Read reviews that mention:
Mike B.
Oct 12, 2026
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Hired on Thumbtack
Brad and his team are great! Quick response to replace a broken water heater and a competitive price. Great value for a high quality heater. Everyone I interacted with was professional and friendly. They worked quickly and cleaned up well. I'll definitely use them again for any plumbing issues
Details: Yes, the location has an existing heater • Gas tank (standard) • I would like the pro to buy the water heater • House
Water Heater Installation or Replacement
Susan W.
Sep 30, 2026
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Hired on Thumbtack
Brad was very responsive to our inquiry about our home water quality. He did a review of water quality testing for all kinds of metals and other needs for purification. It’s crazy how poor Denver water is no matter the types of pipes you have. He professionally explained the results and we discussed several solutions without pressure from him on which approach. Without hesitation we picked a solution that offers the type of consistent purification we need for the health of our family. It helped knowing Brad also has the same system in his home for his family and he is passionate about this business and helping us all have healthy water!
Water Treatment System Installation or Replacement
Ryan B.
Oct 6, 2026
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Hired on Thumbtack
Very knowledgeable, professional, and responsive. Communication was excellent, and questions were answered quickly and clearly. It’s clear they know what they’re doing and truly care about providing great service. I would definitely recommend them!
Details: Yes, the location has an existing heater • Gas tank (standard) • I would like to discuss with the professional • House
Water Heater Installation or Replacement
Daniel B.
Sep 14, 2026
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From Google
I spent a ton of time researching water, softeners, and filtration systems and was going to try and install on my own, but ended up going with True line because of the 20 year unlimited warranty on the Clack valve, resin, carbon, and tanks themselves, which I could not find anywhere else.They are a dealer of high-quality systems I couldnt get access to on my own. Wish I had done it right off the bat!
True Line Water's reply
Thanks so much for the thoughtful review and glad we were able to provide a water solution for you that worked for your specific needs. Thanks so much for your business!
David Q.
Sep 14, 2026
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From Google
As a Realtor, I always recommend clients get a free water test from True Line anytime they move into a new home that does not have a filtration system. They truly take a very consultative approach to watertreatment without the pushy sales tactics!
True Line Water's reply
So happy to be able to help out you and your new home owner clients! We look forward to continuing our partnership with you and your firm. We will do our best to continue to be true water consultants for your clients.
Credentials
Background Check
Bradley Mallmann
FAQs
What should the customer know about your pricing (e.g., discounts, fees)?
We start with a free in-home water test to see exactly what's in your water before recommending anything. Most whole-home softening and filtration systems run $1,900 to $8,900 installed, depending on home size, water quality, and equipment needed. No high-pressure sales tactics, you get the test results and a straightforward recommendation.
What is your typical process for working with a new customer?
We test your water first, walk you through what we find, and recommend a system based on your actual water quality and household needs, not a one-size-fits-all package. Installations are done by licensed plumbing professionals and backed by manufacturer warranty.
What education and/or training do you have that relates to your work?
Our installations are performed by licensed plumbing professionals on our team, and we stay current on manufacturer standards for the softening, filtration, and reverse osmosis systems we install.
