Lake Pleasant’s Award Winning Water Treatment Plant

The desert region of central Arizona is now the site of North America’s largest design-build water treatment plant. The advanced facility has succeeded at maintaining and treating an average of 80 million gallons a day and also has state of the art disinfecting capabilities. The current intake will ultimately be expanded to 320 mgd to keep pace with increasing development in northern Phoenix.  This construction effort included a raw water intake and pump station, 1.5 miles of large-diameter pipeline and 40 million gallon (on-site) storage reservoir and pumping of finished water which supplies water to high and low-pressure distribution systems. The Phoenix metropolitan area has had explosive growth in the last several years.  In anticipation of further population increases and expansion into the city’s northern suburbs, the Lake Pleasant water treatment facility was designed to provide high-quality drinking water for an additional 300,000 homes in the next two decades. Currently, there is a built in capacity of serving 400,000 homes.

As the largest Design-Build-Operate (DBO) water project in North America, the technologically advanced facility incorporates the latest in modern water treatment processes and will also allow for foreseeable future provisions and regulations. The Lake Pleasant plant also features a unique architectural concept, designed to match the natural environment and make extensive use of indigenous materials.


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