Big Creek WRF

Big Creek WRF

The Big Creek Water Reclamation Facility is located at 1030 Marietta Highway, Roswell, in North Fulton County, west of the Chattahoochee River in the Big Creek Basin.

Big Creek serves the largest service area and largest total flow of treatment facilities in North Fulton County. The service area is approximately 70 square miles and includes Roswell, Alpharetta, portions of Milton, and areas of Cobb and Forsyth Counties. The facility was originally constructed with a treatment capacity of 0.75 MGD (million gallons per day). Several upgrades and expansions have been completed on the facility to its current permitted treatment capacity of 24 MGD.

Due to the Metropolitan North Georgia Water Planning District forecast, which takes the continued population growth and economic development into account, the facility requires additional capacity to meet the growing wastewater treatment demands of the service area.


Key elements of the project include coarse screening and grit removal, primary clarification, biological nutrient removal, flat plate membrane filtration, offline equalization tanks, aerobic digesters, new electrical and instrumentation infrastructure, and ultraviolet and post-aeration of effluent. Care has been taken to design a project that will reduce light, noise, and odor from leaving the facility and will provide significant quality of life improvements to the surrounding neighborhood. The new treatment process, incorporating state-of-the-art membrane technology, will produce significantly cleaner water than the existing plant. Even at the higher flow capacity, discharges to the river will be reduced by up to 50% from current permit limits. Construction crews will also demolish and repurpose various older or underused sections of the facility. Efforts will be made to recycle existing site materials, eliminating up to 10,000 truckloads of landfill disposal.

Construction is expected to follow a 46-month schedule and conclude in 2024

“Fulton County is committed to protecting the Chattahoochee River, our most important natural resource. This important, landmark project reflects our dedication to providing the highest quality services to our citizens in an environmentally sound way while still allowing the growth and economic development throughout the North Fulton County area,” said Fulton County Public Works Director David Clark

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