Project Details

  • Project Type:
    Water Treatment Plant
  • Location:
    Yuma, AZ
  • Delivery Method:
    Construction Manager at-Risk
  • Constructed Value:
    $92.8 million
  • Completed:
    June 2009
  • Project Highlights:
    • Value engineering for cost savings
    • GE Zenon membranes
    • 42″ pipeline beneath an interstate freeway and railroad line
  • Awards:
    • 2010 Water Project of the Year by Arizona Water Association
    • 2009 Engineering Excellence Award, ACEC
    • 2005 Small Water Project of the Year (Phase I) by Arizona Water & Pollution Control Association
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Agua Viva
Water Treatment Facility

City of Yuma

Filanc Construction and Carollo Engineers worked collaboratively with the City of Yuma through three phases of design and construction to deliver a state-of-the-art water treatment facility that will provide our residents with high-quality water for decades to come.
Clarence Chau CIP Project Manager City of Yuma
The award winning Agua Viva Water Treatment Facility (WTF) project was built for the City of Yuma, Arizona to provide needed drinking water for its growing population. The facility was completed in three phases over the course of seven years with Filanc serving as the Construction Manager at-Risk.

Interim Phase

The project’s Interim Phase improvements were developed to provide a series of cost-effective enhancements to the existing facility. This first phase expansion involved both preconstruction and construction services. Filanc constructed a new 3 million gallon per day (MGD) well on the existing site, upgraded an existing well to produce 3 MGD, installed an iron, manganese, and odor treatment package, and a 4.5 MGD variable speed booster pump at an existing high-service booster pump station. Value engineering during construction ultimately led to a savings of almost $200,000 from the total cost of this phase. Excellent management skills not only kept the project on track, but contributed to completing the project ahead-of-schedule. The project was awarded the “2005 Small Water Project of the Year” by Arizona Water & Pollution Control Association.

Intermediate Phase

The Intermediate Phase consisted of the expedited construction of two additional 2.5 MGD steel potable water storage tanks, new high-service pumping facilities, a new well and pump, underground piping, instrumentation and controls, chemical feed system additions and modifications to the plant’s supervisory control and data acquisition (SCADA) systems. This phase also required a challenging installation of approximately 1.6 miles of 48-inch water conveyance piping to connect the reservoirs with the City’s distribution system. This conveyance main required the use of horizontal directional drilling (HDD) under an interstate freeway and a railroad line adjacent to the facility.

Final Phase

The Final Phase included the construction of a new 24 MGD water treatment plant that increased the capacity from 1 MGD and utilized chlorine dioxide disinfection and GE Zenon membrane filtration technology to produce high-quality potable water. Work on this project included a raw water intake structure, a raw water pump station, standby power, and an off-site raw water transmission pipeline. Filanc also installed and commissioned a PSI MicrOclor onsite sodium hypochlorite generation system. The project required multiple tie-ins to the existing production and transmission facilities, which had to be carefully coordinated with plant personnel.

Facility Features

The new state-of-the-art Agua Viva Water Treatment Facility features these advanced treatment technologies.

  • GE Zenon Membrane Filtration Technology: Membrane filtration is a pressure-driven separation process that produces high quality water for distribution to consumers. Membranes act as selective barriers that block particles larger than the pore size from passing through the membrane. The filtration system consists of hollow fibers with pores small enough to block Giardia, Cryptsoporidium, and many forms of bacteria from entering the distribution system.
  • PSI MicrOclor Onsite Sodium Hypochlorite Generation System: An alternative method of disinfection featuring onsite generation of sodium hypochlorite that alleviates the safety concerns associated with storing and using bulk sodium hypochlorite or chlorine gas.
  • Dissolved Air Flotation Thickeners (DAFT): This technology produces a high separation and sludge thickening efficiency, which in turn reduces energy and chemicals consumption.
  • By-Product Reduction: The water treatment technologies employed at the Agua Viva WTF reduce the formation of disinfection by-products in the distribution system.
  • High-Quality Water Storage Solution: The new Agua Viva WTF reduces the time that water is stored in the system before being consumed. Consequently, potential deterioration in water quality due to water aging in the distribution system is reduced.
  • Iron, Manganese and Odor Treatment Package: These maintenance-free well water filtration systems are designed to filter high levels of ferrous, ferric, manganese, hydrogen sulfide gas, and suspended solids to provide quality drinking water.

Filanc managed the safety program for an excess of 247,000 self performed man-hours and an equivalent number of specialty subcontractor man-hours.