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Flatiron is a recognized leader in the construction of conventional water and wastewater treatment facilities along with membrane and reverse osmosis technology. We help clients deliver water to their communities by employing unique techniques for renovations, upgrades to existing facilities, and construction of new water and wastewater treatment plants.

Because we self-perform much of the concrete, piping and mechanical work, we can better control quality, cost and schedule, passing those benefits on to our clients. Flatiron works under a variety of different contracting methods including design-build, finance, operate and maintain.

Flatiron combines our own experience with that of parent company, HOCHTIEF and sister companies, E.E. Cruz, Turner and Leighton to offer clients a full range of water/wastewater services.


  • Pre-construction services (design review, conceptual analysis, pricing and budget review)
  • Environmental consulting
  • Wastewater upgrade
  • Nitrates and pharmaceutical removal
  • Construction
    • Water and wastewater treatment plants
    • Secondary irrigation water treatment scalping facilities
    • Pumping stations
    • Water storage
    • Membrane filtration and reverse osmosis treatment
    • Hydropower and cogeneration facilities
Calaveras Dam Replacement

Calaveras Dam Replacement - Sunol, CA

The San Francisco Public Utilities Commission has awarded a $259 million contract to the joint venture of Dragados USA, Flatiron and Sukut Construction for the Calaveras Dam Replacement in Sunol, Calif. The project will replace the original dam, built in 1925, with…


Central Valley Egg Shaped Digesters

Central Valley Egg Shaped Digesters - Salt Lake City, Utah

This project was the first of its kind in Utah and one of only a select few in the United States. It included the construction of two new 1.65 million gallon steel, egg-shaped digesters that are 72 feet in diameter and a support building that is ten-stories above ground…


East Canyon Water Reclamation

East Canyon Water Reclamation - Park City, Utah

The East Canyon Wastewater Reclamation Facility expansion project is one example of Flatiron's ability to take a team approach in ensuring a successful project. Planning included meeting future flows, as well as new, stringent phosphorus discharge limits. Evaluation of…


Genesee Dam and Reservoir

Genesee Dam and Reservoir - Kittredge, CO

The Genesee Dam No. 2 is a roller compacted concrete dam comprised of 34,500 cubic yards of concrete and standing 102 feet tall. The project included an outlet structure, blasting quarry and an RCC processing plant.The RCC did not require the testing of slumps and breaks,…


Green River Water Treatment Plant

Green River Water Treatment Plant - Green River, Wyoming

The Green River Water Treatment Plant project included 6,300 cubic yards of architectural and structural concrete. The operations building totals over 75,000 square feet. The concrete walls on the treatment building are up to 65 feet tall. The plant capacity is 32 million…


Jordanelle Hydroelectric Dam

Jordanelle Hydroelectric Dam - Heber, Utah

This project consists of a cast-in-place reinforced concrete powerhouse building with welded steel penstock, rip rapped tailrace channel, and other site improvements, constructed adjacent to the existing Outlet Works Control Structure at the base of Jordanelle Dam,…


Lenihan Dam Outlet Modifications

Lenihan Dam Outlet Modifications - Los Gatos, CA

At the foot of the Santa Cruz Mountains, Flatiron replaced the deteriorating outlet structure for the 50-year-old Lenihan Dam - a 1,000-foot-long earthen barrier holding water stored at the Lexington Reservoir in Los Gatos, Calif. The project was a seismic upgrade for…


Point of the Mountain Water Treatment Plant

Point of the Mountain Water Treatment Plant - Point of the Mountain, Utah

Flatiron constructed the new Point of the Mountain Water Treatment Plant, near Draper, Utah, as a portion of the Metropolitan Water District of Salt Lake and Sandy's water delivery improvement project. The state-of-the art, hydraulic basin retaining treatment plant…


Ruskin Dam and Powerhouse

Ruskin Dam and Powerhouse - Ruskin, British Columbia

The Ruskin Dam and Powerhouse, located 60 kilometers east of Vancouver on the Stave River, has provided power to British Columbia since the 1930s. BC Hydro is commissioning a series of contracts to upgrade the dam, powerhouse, and associated structures - work that…


Santaquin Water Reclamation Facility

Santaquin Water Reclamation Facility - Santaquin, Utah

The Santaquin Water Reclamation Facility in Santaquin, Utah, represents the culmination of over six years of community planning and public outreach. This revolutionary facility is the first of its kind in Utah that will store and reuse 100 percent of its treated water for…


Southwest Groundwater Treatment Plant

Southwest Groundwater Treatment Plant - West Jordan, Utah

Flatiron is constructing a new groundwater treatment plant in West Jordon, Utah, a suburb of Salt Lake City, next to the Jordan River. The state-of-the art water treatment facility will remove contamination from a local aquifer and produce 8,235 acre-feet per year…


Utah Valley Water Storage Tank

Utah Valley Water Storage Tank - Orem, Utah

Flatiron constructed a 20-million-gallon water storage tank in Orem, Utah to serve the needs of Central Utah Water Conservancy District's Water Treatment Plant, which supplies water to the communities of Orem and Provo. The new tank is the largest post tensioned and circumferentially…