Lake Pleasant was a design-build-operate contract in a joint venture with Black & Veatch. It was the largest design-build-operate contract in North America at the time it was built. The plant processes 80 million gallons of water a day (and can be expanded to 320 million) — enough water to satisfy 400,000 homes. Plus, there is a storage resevoir on site to store 40 million gallons of water.

Materials included 66,000-cubic-yards of concrete, 9.8 million pounds of rebar, and 2 million linear-feet of electrical wire. In addition, 800,000-cubic-yards of dirt were moved. The project included innovative ballasted flocculation process for high-rate sedimentation, ozonation, deep-bed monomedia filters, post-filtration granular activated carbon contactors, and ultraviolet disinfection.

The Lake Pleasant Water Treatment Plant offered a host of complex challenges, all met through a collaborative approach. The facility was delivered safely, on schedule and within budget, bringing clean water to the Phoenix community in the short term and a state-of-the-art facility to the region for years to come.

Learn more at