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Water Treatment

Richard A. Reynolds Desalination Facility Expansion Phase II

Chula Vista, CA

Doubling local drinking water production through groundwater desalination.

Project Type

Water Treatment

Constructed Value
$14.7 million
Delivery Method
Design-Bid-Build
Architect/Engineer
CH2M Hill

The challenge

Sweetwater Authority sought to increase production of locally sourced drinking water from brackish groundwater by expanding the Richard A. Reynolds Desalination Facility. Doubling the plant’s treatment capacity required integrating new desalination systems with the operating facility while also developing the groundwater supply infrastructure needed to support the expanded treatment capacity.

Sweetwater
highlights

Brackish groundwater desalination


Potable water


Reverse osmosis


Manganese filtration system

Challenge met

Filanc constructed the plant expansion and installed the treatment systems required to increase desalination capacity. The project included three new reverse osmosis treatment trains along with iron and manganese filtration systems that prepare groundwater for desalination. A degassifier and upgrades to fluoride treatment and chemical feed systems were also installed to support plant operations.

The expansion also included development of five groundwater extraction wells and more than 13,000 feet of pipeline connecting the wells to the desalination facility. Electrical and instrumentation upgrades integrated the new treatment systems with the existing plant operations. With the expansion complete, the facility now produces a larger supply of locally sourced drinking water, helping Sweetwater Authority reduce reliance on imported water supplies.

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