Project Area
This map illustrates the project boundary for the AWWD Water Pressure Reduction Phase 2 project.
Project Overview
The Alderwood Water & Wastewater District (AWWD) is starting the second phase of our Water Pressure Reduction Project in the Canyon Park/Bothell East area, which includes part of unincorporated Snohomish County and City of Bothell. The project aims to improve the reliability, efficiency, and resilience of the water distribution system, while reducing high-water pressure in areas that exceed AWWD and Washington Department of Health guidelines.
Project Improvements
High water pressure can create several issues including a greater risk of system failures, difficulty operating valves, potential property damage, and safety hazards for AWWD employees and the public. This project will lower water pressure by between approximately 30 to 80 psi, helping to maintain a safe, reliable water distribution system.
Planned improvements include:
- Create two new water pressure zones;
- Installing six new pressure reducing valve (PRV) stations and modifying five existing PRV stations to support the new zones;
- Replacing 125 feet of water main at Richmond Road and Filbert Road (SR 524) and removing an existing PRV vault;
- Install 1,330 feet of water main along 208th Street SE (SR 524) near the Bothell Everett Highway (SR 527) intersection, and 40 feet of water main on 183rd Street SE at Bothell Everett Highway (SR 527);
- Adding 18 neighborhood water service shut-off valves.
Construction Impacts
- Construction may affect travel and cause temporary water service interruptions. Any planned water shutoffs will be communicated in advance, and interruptions are expected to last less than eight hours.
- If your home has a fire sprinkler system or your property has an irrigation system, reduced water pressure may impact the effectiveness of the system. We recommend consulting with your system designer, specialist, and/or manufacturer for guidance on testing and possible modifications. For fire sprinkler systems, work with a licensed fire sprinkler contractor to confirm that your system's water demand will not be negatively affected. Any recommended system testing or modifications will be the property owner's responsibility. If your contractor has questions or concerns about fire sprinkler requirements, please consult your local fire marshal. All work on automatic fire sprinkler systems must be performed by a licensed fitter or certificate of competency holder for that specific system type.
- Most customers in this area already have a pressure-reducing valve (PRV) behind their meter due to existing high-water pressure. After the pressure is lowered, you may still need to keep your PRV in service. If it is no longer needed, you can leave the existing valve in place if you choose.
Project Schedule
General Notification
Please be advised that during periods when the commercial sprinkler system is temporarily out of service due to construction or maintenance, a fire watch must be conducted to ensure the safety of the premises and its occupants. This precaution is critical to mitigate fire risks and adhere to local fire safety regulations. Tenants are responsible for implementing fire watch protocols, which may include appointing qualified personnel to monitor the area for fire hazards continuously. We appreciate your cooperation in maintaining a safe environment during this time.
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