WALLA WALLA WATER COMPANY

WALLA WALLA WATER COMPANYWALLA WALLA WATER COMPANYWALLA WALLA WATER COMPANY

WALLA WALLA WATER COMPANY

WALLA WALLA WATER COMPANYWALLA WALLA WATER COMPANYWALLA WALLA WATER COMPANY

Backflow Testing, Irrigation Design, Installation, and Maintenance Services

Backflow Testing, Irrigation Design, Installation, and Maintenance ServicesBackflow Testing, Irrigation Design, Installation, and Maintenance ServicesBackflow Testing, Irrigation Design, Installation, and Maintenance Services

Backflow Testing, Irrigation Design, Installation, and Maintenance Services

Backflow Testing, Irrigation Design, Installation, and Maintenance ServicesBackflow Testing, Irrigation Design, Installation, and Maintenance ServicesBackflow Testing, Irrigation Design, Installation, and Maintenance Services

About WALLA WALLA WATER COMPANY

Irrigation valve box with three valves connected by PVC pipes and surrounded by gravel.

Our Story

Our Services

Our Story

At WALLA WALLA WATER COMPANY, we have been providing irrigation and backflow testing services for over 35 years. We take pride in our work and are committed to providing the highest level of service to our customers.

USC manual on cross-connection control rests on Walla Walla Water Company hoodie in car.

Our Team

Our Services

Our Story

Our team is made up of experienced professionals who are dedicated to providing quality workmanship and exceptional customer service.  Our founder studied at the USC Foundation for Cross-Connection Control and Hydraulic Research and stays at the forefront of cross-connection research and digital smart irrigation system design and installation. 

Backflow testing kit attached to a residential double check valve assembly in a grassy area beside a sidewalk.

Our Services

Our Services

Our Services

We offer a wide range of irrigation and water protection services, including diagnostic, start-up, certified backflow testing, maintenance, repair, system design and installation, and winterization. 

Services

Certified Backflow Testing

Certified backflow testing of your backflow prevention assembly is essential for maintaining an efficient irrigation system and helping protect our community water supply.

Residential Backflow Assembly Testing

45

Per assembly/test for backflow testing. 

Commercial Backflow Assembly Testing

85

Per assembly/test for backflow testing. 

Backflow Assembly Installation and Repair

120 hr

We provide certified installation and repair of USCFCCCHR approved backflow devices, as well as backflow testing services.

Irrigation Diagnostic and Maintenance

We offer comprehensive irrigation diagnostic, repair, and design services, We are also proud to be a Certified rrigreen Smart Irrigation Pro installer.

Diagnostic

Free - 30 min

General diagnostic, issue identification, and repair estimate. 

Seasonal System Start-up

85

Our seasonal irrigation services include start-up services and a comprehensive system health check for both residential and commercial sprinkler systems. Includes up to six stations, with additional stations subject to an incremental fee.

Consultation, Repairs, and Maintenance

120 hr

We offer in-depth irrigation services, including consultation, design, diagnostics, maintenance, and associated repairs. 

Winterization

50

Our winterization services for residential and commercial systems include comprehensive irrigation services for up to six stations, with additional stations subject to an incremental fee.

Irrigation System Design and Installation

We are proud to be a Certified Irrigreen Pro Installer. Irrigreen Digital Smart Sprinkler System use up to 50% less water than traditional systems. Irrigreen maps your yard and waters only where it should, not the driveway, patio, fence line, or the neighbor’s lawn. Smart sprinkler heads, a smart controller, and the Irrigreen app work together to water precisely where your yard needs it.

Estimate and Site Assessment

Free

Site review and measurement to install a state-of-the-art Irrigreen Digital Smart Sprinkler System.  

System Design and Installation

Call or Text Today

Professional design and installation of an Irrigreen Digital Smart Sprinkler System that uses up to 50% less water than traditional systems. Irrigreen maps your yard and waters only where it should, not the driveway, patio, fence line, or the neighbor’s lawn. Smart sprinkler heads, a smart controller, and the Irrigreen app work together to water precisely where your yard needs it.

WA UBI: 605273335 | WA BAT: B8086 | WA GC: WALLAWW757L6 | Dig-Safe Certified | Licensed, Bonded, Insured | Certified Irrigreen Pro Installer

Contact Us

Schedule your consultation or service today!

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BAT 2.0

What’s next for the intersection of traditional backflow testing and the agentic era in relation to irrigation services? As we look forward, innovations like Irrigreen Smart Irrigation systems are reshaping the way we approach sprinkler systems, starting right here in Walla Walla.

Copyright © 2026 WALLA WALLA WATER COMPANY - All Rights Reserved.

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