Project

Water Treatment Plant Upgrades

Through progressive design-build delivery, our team upgraded the Claremore Water Treatment Plant to treat up to 8.3 million gallons per day (MGD) through new greensand filtration, providing clear, reliable drinking water and supporting community growth across Rogers County, Oklahoma.

Our work with Claremore dates to 1908 when we designed the city’s first waterworks improvements. This project builds on that history, helping Claremore meet today’s drinking water needs and prepare for future growth.

Seasonal water quality variations in Claremore Lake led to elevated manganese and organic compounds, periodically resulting in discolored drinking water and seasonal taste and odor challenges. At the same time, expanding residential and commercial development across the city required plant improvements to support the current 2.8-MGD average daily flow and projected 4.4-MGD future flow, with space reserved to expand filtration capacity to 10.2 MGD.

As the design-builder, our team delivered plant improvements in coordination with the city as well as the plant operator, Inframark. The project added four horizontal, two-cell greensand filter vessels with a combined filtration capacity of 8.3 MGD, housed in a new 2,255-square-foot building. We also built a 670-square-foot chemical feed facility to introduce enhanced coagulation and completed architectural renovations across plant facilities. 

Client

City of Claremore

Location

Claremore, Oklahoma

Region

Southwest

Services

Municipal Water & Wastewater

Advanced Water & Wastewater Treatment

Design-Build for Water & Wastewater Infrastructure

Industry

Water

Improved Treatment Process

The team deepened the treatment lagoons by 1 foot to expand holding capacity by more than 20% and rerouted the lagoon outfall to prevent manganese residuals from recirculating into the raw water intake.

Progressive Design-Build Advantages

Market price shifts and extended equipment lead times created budget and schedule risks. The project was one of the first municipal projects in Oklahoma authorized under the Department of Environmental Quality’s flexible permitting process for progressive design-build, which allowed our team to release early design packages and prepurchase long-lead filter equipment ahead of cost increases. Close collaboration allowed ongoing scope adjustments to preserve the budget, including having the city self-perform some tasks.

Project Completion & Results

The project safely reached substantial completion on an 18-month construction schedule, within budget and without cost-additive change orders. Initial testing showed average manganese reduction exceeding 75%, delivering clear water to the tap.