
Contact Us
Allegiance Water Services
8240 E. Gelding Dr.
Suite 120
Scottsdale, AZ 85260
(480) 530-7070
Office Hours:
Monday-Friday
8am-5pm
ROC 271847
About Us
Allegiance Water Services is a leading plumbing, water treatment, and irrigation contractor in the Phoenix metro area. We always commit to the highest standards of ethical business practices, promptness, fair pricing, quality craftsmanship, care for your home, and an above and beyond approach when servicing your home’s plumbing, water treatment, and irrigation needs. We offer you more than contract plumbing services; we like to give you comfort, security, and peace of mind so you can get on with your busy life.If you live in Phoenix, Scottsdale, Mesa, Chandler, Tempe or the surrounding areas, contact us today to schedule your plumbing, water treatment, or irrigation services!
As a local, family-owned company, it is more than simply a business to us – you are our friends and neighbors and we will always treat you as such. We aim to be the most trusted, knowledgeable, and easy plumbing, water treatment, or irrigation service experience you’ll ever have!
Check Out Our Customer Reviews




Allegiance’s technician Eloy Garcia arrived promptly, explained and showed me the issue with my water softener and also he noted some water in tray beneath the water heater that I had even noticed. He fixed the motor on softener and then removed and replaced my water heater as he noted it was still under manufacturer’s warranty! I am so please with his prompt, thorough and efficient service. I highly recommend him and Allegiance Eater Services!

Paul is all of the above plus irrigation systems technologically advanced.

Allegiance is fantastic. Lawson in particular is a total professional. Super knowledgeable, trustworthy, and efficient. Diagnosed our crazy irrigation issues and came up with a cost effective solution.

Lawson was punctual, polite, clean and knowledgeable. He serviced the RO system. Recommended an alarm to detect a leak. Will think about it.

Fast, reliable. Polite repair people. Fair price.

Looking into my options as soon as I hear back about my options

Paul came today to check my Rain Bird system controller. I have worked with him during my new irrigation installation project at the beginning of this year. I was extremely pleased with the outcome then and again today. I specifically requested him for today’s job. As always, he offered excellent, professional service, knowledgeable, courteous and friendly. I would refer him and Allegiance Water Service to my friends with high remarks.


Had an issue with my sprinkler system, something failed and I had a big wet spot on the side of my house. Called in and was helped with instructions on how to turn off the sprinkler side so no water would go to it until a repair could be scheduled. Paul comes out and shows me the problem, we set a time and he fixes all of that, THEN while testing, just waltzes into the spraying sprinklers and dials in where the water SHOULD have been spraying, like " oh, that's the wrong direction to spray for this area..." Then he programs the whole thing to fix my already mediocre lawn and bushes, told me what to do to improve my lawn through yard care and got into his car with soaking pants and thanked ME! 10/10.

What a great job by everyone involved in this process!! A new drip system was installed in both the front and back yards - first time a system was installed by real professionals. System works great and is easy to use!! Highly recommend Allegiance!!!



Johnny Gonzales was very professional, courteous, and thorough.


Excellent communication. Reliable.


These Guys are awesome! They were on time and on the mark. Service was professional and they did a clean repair. I would definitely recommend them.


John was very knowledgeable and pleasant to work with. Unfortunately, he didnt have the parts i needed so he will be returning in a couple of days to do the actual work. I will update after the work is completed.


Friendly and reliable. Does great work!

Extremely impressed and satisfied with professionalism and service. A real person always available by phone unlike several competitors I tried to reach. Eloy the tech was the best in all respects.

Very professional and responsive. No guess work as to when they arrive. Explained everything and cleaned up yard after they were done. Recommend...



He installed a water softener system and did a great job. He also updated our r/o system. Very professional

Assessed my sprinkler system. Told me and showed me the main issue I'm having. No charge! Very nice and knew the answers to my questions. Didn't try to sell me anything. Will have these guys over everyone else I've done business with.

Allegiance Water Services was great! They prioritized my urgent request and Lawson was great when he came to diagnose the issue. He thoroughly explained the problem and gave me different options and advice on future work. 5 star support!

Arrived on time , perfectly described a job he'd be doing and provided excellent service , would recommend him to all of my neighbors, did a great job fixing my water heater leak


Great company. We would highly recommend them. Courteous, professional, fast response time. Very reasonable rates. This is the third time we have used their services and have been very happy every time.

Fixed my backyard sprinklers without having to put a whole new system in.

Lawson Key was very professional, respectful and kind. He did a great and solid job of installing a new faucet for our water filtration system!

I have used Allegiance for years now and every time I'm still amazed at how courteous and professional they are. Every year I have my R.O. filter changed and my soft water big blue filter changed. They also perform my mist services for the backyard with shutdown for the winter and startup in the spring. 100% recommend them!


Allegiance has been great. Eloy was perfect. I recommend this company highly and will certainly continue to use them in the future.

Lawson was incredibly friendly, informative and professional. David was also a standout for his strong communication and customer service. 10/10 would recommend to friends and family.


We have used Allegiance Water Services for several years now, and we have not been disappointed. Very professional, quality work, friendly, reliable.

John was on time and professional. He fixed the leak in my backyard system and tested it to make sure no further leaks. He also checked the front yard and found an additional leak that I hadn’t noticed and also fixed it in the same trip. Super happy with the great service and will definitely call these guys again for future plumbing repairs outdoors and indoor.

John was great. Professional and courteous. Very pleased with his work.

Allegiance Water Services are prompt, thorough, and professional. I found them when they did work on my next door neighbor’s irrigation system. When my irrigation started leaking and watering weeds, I called Allegiance Water Systems for a quote and then to schedule repairs. They send text messages and emails with links to track your technician or to call them direct. Invoicing is quick and easy to access via their billing system. You have everything in writing with links to confirm, deny, or modify your service needs.

Excellent service. Rommel was very professional. I will call on them again. Marc C.


Highly recommend for Navien install and servicing.

They have done several projects for us and they were done efficiently and well. I highly recommend them for any water service

Friendly, knowledgeable and efficient.


Lawson with Allegiance Water has done work for us the last few times and he’s very polite and professional and has done great work for us!

After 5 years we had water softener , we found out we use soft water for our pool and watering the plants in our back yard , so I called this company they responded fast and the next day they sent their technician Ruben . After we agreed on his estimate , he came the next day. He did awesome job on separating our soft water. Ruben was knowledgeable, fast and reliable. I am so happy with his work and recommend him and this company to everyone.
