Plumbing, Water Treatment & Irrigation Services
Essential Residential and Commerical plumbing services, the best water treatment technology, and quality irrigation solutions at a fair price. Contact UsPlumbing Services
Quality. Reliability. Professionalism.
Water Treatment
Cleaner, clearer water for your entire home.
Irrigation
Better irrigation means better lawns and gardens.
Plumbing
Allegiance Water Services is proud to offer a comprehensive list of residential and commercial plumbing services to fit your needs. We have quickly developed into one of the most trusted plumbing companies in Scottsdale, AZ and the Greater Phoenix area through our commitment to quality customer service.
• Faucets & Fixtures
• Plumbing Leak Repair
• Toilets, Tubs, Showers
• Clogged Drains and MORE!
Water Treatment
You can count on us to provide the very best in water treatment solutions for your home. Everything from whole-house water filtration and water softening to point-of-use drinking water systems, such as reverse osmosis. We have an unmatched commitment to excellence in providing professional service for all of your water treatment needs.
• Water Softeners
• Whole House Filtration
• Purified Drinking Water
• System Maintenance
• and MORE!
Irrigation
Allegiance Water Services is your leading provider of residential irrigation system repair, replacement, or installation throughout Phoenix and the surrounding areas. You can trust our professional technicians to do the job right, ensuring years of efficient and effective water use for a beautiful landscape.
• Sprinkler & Drip Installation
• Sprinkler & Drip Repair
• Irrigation Timers
• Irrigation Valves
• and MORE!

We know water, inside & out.
Our Company
At Allegiance Water Services 5 Star service isn’t our goal, it is our foundation. We take pride in being the company that builds trust with our clients every step of the way. We provide essential plumbing services, the best water treatment technology, and quality irrigation solutions at a fair price.
Plumbing, water treatment, and irrigation needs come in all sizes. Allegiance Water Services offers a full range of solutions for your home throughout the Phoenix metro area. Our professional and courteous technicians and office staff have the skills and experience necessary to provide you the highest quality service possible.
Check Out Our Customer Reviews





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!

Allegiance Water Services sent a repair man to fix a broken sprinkler head.. He was courteous, pleasant and well informed. He fixed the head and checked to be sure the whole system was working again correctly. I appreciated his service. Thank you

Johnny Gonzales was very professional, courteous, and thorough.

Eloy is just awesome, friendly, detailed, professional and took time to walk me through all work completed, highly recommend.

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!

Why should you hire Allegiance? Quality. Dependability. Customer service. Experience. Dedication. Hard work. This company takes quality experience and service to the next level. I haven’t worked with many home service companies who do such a good job like this. From the moment we got the quote, until the minute the job was done, they were reliable and they provided the service we requested. First they came out to inspect the issue. Once they figured out what was wrong, they provided a verbal quote and followed up with a digital quote. I was able to accept the quote digitally and put a deposit down to begin the work. Since our system needed to be replaced, it was quite a process and luckily they had it all under control. They contacted the city and cox communications to flag their underground items so that they knew where to avoid. Then Lawson came out and literally spent an entire day replacing the system. The customer service was above and beyond. Yes there are a million plumbers and irrigation companies out there, but there aren’t as many reputable, trustworthy, licensed and qualified ones like Allegience.


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.


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.

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


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!

These guys replaced my Water Heater today. Prompt, fair price, easy to work with. 5 Stars is not sufficient to rate their quality

He was wonderfully informative and polite. Educating me on my irrigation system, as I'm from Michigan and very unfamiliar with them.

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.


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.


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!

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!

Highly recommend for Navien install and servicing.

Ruben and Juan were the best! Great attention to details, all zones were color coded, and helped us with the use of the Rain Bird app. We couldn’t be happier with the great work!

Excellent communication. Reliable.

Fast, reliable. Polite repair people. Fair price.

They answered the phone (after several other business didnt) and came right out to do the estimate and complete the work. Quality is good. Will call next time I need sprinkler/landscaping work.





Would highly recommend. Lawson was very professional.



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

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.


Installed water softener


I am so grateful to Lawson for helping me with my spinkler system. He is knowledgeable, kind, and patiently answers all my questions. I trust him and Allegiance Water Service for all of my home’s plumbing needs.

Very prompt service and were there at scheduled times. Both tecs that have been here, Dan and John, were outstanding. Very professional staff including Josh. Pricing is reasonable. I would highly recommend this company.



Josh and the office and service tech Rommel were excellent in every way! Professional, knowledgable service of issues with my water softener.

Lawson installed a reverse osmosis system at our new home today. While he was here, he also helped answer (many!) other questions and helped inspect the home’s irrigation system for me. He was thorough, professional, friendly, and patient. Thanks so much Lawson and Allegiance!


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!!!

I’ve used this company for multiple services! And they are great at everything they do. They are super responsive to all of my needs and are always on time. I will never use any other company!

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.

Friendly and reliable. Does great work!

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