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




Friendly, knowledgeable and efficient.

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!

David was terrific to work with to get my endless questions answered and align on the right water softener system. Lawson, who installed the water softener was outstanding. He explained service and care issues and did a very professional install. The whole team takes their customers satisfaction seriously. I'll be back for future plumbing needs!



We had a leak in our drip system. Johnny was awesome. He took the time and explained what the problem was and how to get it fixed. He didn't have the part...

Would highly recommend. Lawson was very professional.


Excellent job! Will use them again.


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

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!

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.

Excellent service

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

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

Installed water softener

I had made an appointment for Thursday, but was pleasantly surprised to receive a call on Wednesday that Eloy could come out a day early. They serviced my RO water system and soft water system. They exhibited excellent attention to detail and worked in a professional manner. When finished they cleared explained what we needed to to do move for the coming year. I will certainly use them again for annual inspections and servicing.

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.






Annual service on RO water system. Rommel was friendly, fast and professional.

Allegiance and Eloy are my "go to" plumbers. Prompt, efficient, cost effective and courteous.


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

Technician was here within 30 minutes. Did a great job for a fair price. I highly recommend Allegiance…..

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

Friendly and reliable. Does great work!

I had an exceptional experience with Allegiance today. My old gas water heater needs to be replaced. I called Allegiance yesterday and discussed with David who is very knowledgeable, transparent and told me pros and cons among the different water heaters. I decided to go with 50 gallon Bradford White water heater. Ruben came in next day and clearly explained to me what is the process. He is excellent, very skillful and told me how to maintain it. He cleaned everything afterwards. I am very happy with their services and will call Allegiance for my plumbing issues for sure. Ruben from Allegiance Water Services did an excellent job again today. I had water hammer issue for a couple of months and my pipes coming out the main pipe weren't connected right by a previous plumber. The irrigation system controller needs to be replaced as well And it is now upgraded to an enabling phone control unit. Ruben did an excellent job on replacing the unit and repiping everything. It only took him an hour and they work great! Ruben is very experienced, knowledgeable and efficient. It wouldn't go wrong for Ruben to do your plumbing jobs.


John was extremely professional and courteous explaining in detail the problems with my irrigation system. He made the repairs and added recommendations as well. He was the best! I highly recommend! Pull

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.

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.

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.


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!


The service tech was pleasant, courteous and knowledgeable. He tracked down the problem and eliminated it as quickly as possible, as he was aware that what his time cost us in getting the job done.

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

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!

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.


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!

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

Fast, reliable. Polite repair people. Fair price.
Valley Wide Service
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