Desert Mountain Water LLC
Licensed water treatment contractor in Phoenix, Arizona
Desert Mountain Water LLC holds Arizona ROC licence 355261, active, licensed since 25 Oct 2024, rated 5.0 from 194 Google reviews. Bonded for $11,250 with RLI Insurance Company. No complaints on the Arizona ROC record.
Report card
- Licence activeArizona ROC #355261, Specialty Dual CR-54 Water Conditioning Equipment. Issued 25 Oct 2024, renewal due 31 Oct 2028.
- Licensed 2 yrsSince 25 Oct 2024.
- Bonded$11,250 with RLI Insurance Company, since 3 Oct 2024. Arizona sets the amount by licence type and expected yearly work, so a bigger bond means a bigger business, not a better one. Homeowners can also claim up to $30,000 from the ROC Recovery Fund.
- No complaintsNone on the Arizona ROC record.Arizona ROC record
- BBB AccreditedIts BBB rating, complaints and reviews are on its Better Business Bureau profile.BBB profile Complaints Reviews
Checked against the Arizona Registrar of Contractors (ROC) register on 4 Nov 2026.
Google reviews
5.0(194 reviews)German Camorlinga★★★★★ 3 months agoView on Google
I rarely write reviews, but this one is well deserved. Before choosing Desert Mountain Water, I read through a lot of the Google reviews, and one name kept coming up over and over: Rex. Every review about him was outstanding. Today, I had my reverse osmosis system and water softener installed, and sure enough—Rex was my installer. I can honestly say the reviews were right. Rex is incredibly knowledgeable about rev…
Jim Brown★★★★★ 4 months agoView on Google
Really happy with Rex’s work. Great guy. Replaced all filters including the RO membrane which had not been replaced in 4 years. Tested the water. Cleaned up hose routing and added an easy on/off valve. Re-pressurized holding tank. System is much faster now. I recommend their services.
Chad Layman★★★★★ 8 months agoView on Google
We have used Desert Mountain Water to maintain our RO system, as well as our Whole Home water softening system for the last two years. Our Tech, Rex is super knowledgeable, friendly, and helpful. They do a great job of scheduling your annual service so we have one less thing to try to keep up with on our schedule. Our water always feels, and tastes great. I wholeheartedly recommend Desert Mountain Water for all of yo…
Cheryl Simmons★★★★★ 2 months agoView on Google
Rex was my technician. Coming from California i was unfamiliar with water softeners and RO systems. Rex gave me a good review of what I currently have and what he recommended. Looking forward to working with him again.
Mari DeZago★★★★★ 8 months agoView on Google
Rex texted that he was on the way and arrived in plenty of time to completely change our RO filter system in the appointment window. Rex was personable, professional, and did a great job cleaning up! Thank you, Desert Mountain water LLC. You will continue to get our repeat business!
Read all 194 reviews on Google Reviews and photos from Google, 4 Nov 2026.
Why it ranks #2 of 20 water treatment contractors in Phoenix
Score 72.2 / 100. Claiming this listing or using Theo never changes it. How we rank
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