Westside Pressure Zone

After over two years of construction, Provo City is almost ready to put the new Westside Pressure Zone online as part of our water distribution system. While most residents won’t notice any change in water service, information is provided below to explain why Provo has made these upgrades and keep residents in the know.


The new Westside Pressure Zone is generally located west and south of the railroad tracks as shown on the map below.


Two new concrete water storage tanks (10 Million Gallons total), associated transmission lines and pressure reducing valves that will create the new pressure zone.


Construction of the two tanks and the transmission lines is nearly complete. Over the next few months, Provo staff will be bringing these components online and separately operating the two pressure zones. This is being done during the winter months to get operators used to the new configuration when the system demands are lower.


Historically, the west side of Provo has been serviced as part of the city’s Main Zone. In the 2010 Culinary Water Master Plan, two concerns were identified relating to Provo’s west side: limited storage and high pressures. Before this project, 75% of Provo was part of the Main Zone and only had 33% of the storage. In addition, pressures well exceeded the state maximum recommended pressure of 120 psi.

To resolve both issues, Provo Public Works Staff – in coordination with our consultant Hansen, Allen & Luce – determined that the most effective solution would be to add two new tanks (shown as yellow dots on the map below) and provide new transmission lines to service the west side. These tanks are about 100 feet lower in elevation than the Main Zone tanks, which will reduce the overall pressure a little more than 40 psi.

How does this affect me?

Indoor Use – most homes have an in-line (pressure reducing valve) PRV that keeps the pressure at a reasonable level to avoid damage to indoor water fixtures, water heaters, etc. The reduction in system pressure should have minimal effect on indoor pressures on the west side.

Outdoor use – The outdoor use will be affected more if the sprinkler system has not had a PRV since the pressure is dropping about 40 psi. When starting up your system next spring, check your spray patterns and run times to ensure that watering is effective.

Fire sprinkler systems (more typical for commercial properties) will be affected by the lowered pressure. Check the system characteristics and ensure that it will still function properly at the lower system pressure.

Areas outside of the Westside zone shouldn’t see much of a change. Some homes may even have a smaller pressure swing between high flow and low flow times.

Please feel free to call Customer Service 311 with concerns or questions.

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