Eddie Black, Plant Superintendent
3108 Wetherington Lane
Valdosta, Georgia 31603
Phone: 229-333-1857
Fax: 229-241-8285

Treatment Process

Recently commissioned in Spring 2016, the new Withlacoochee Water Pollution Control Plant provides the City with state-of-the-art wastewater treatment for an average daily flow of 12 MGD, with the capability to treat peak flows of 18 MGD. When high flows require use of the new 6 million-gallon (MG) equalization basin, the plant can treat a peak hourly flow of 38 MG. The new plant uses a Sequencing Batch Reactor System (SBR) to treat wastewater while effectively removing nutrients and reducing phosphorous. The SBR system utilizes the activated sludge process, the foremost biological treatment method used to treat domestic wastewater. As opposed to the conventional activated sludge process in which wastewater treatment takes place in various, linearly arranged tanks, the SBR process occurs sequentially in the same tank. The SBR process is extremely flexible and suited to all types of wastewater and plant capacities.

Treatment begins at the plant headworks where mechanical bar screens remove sticks, plastics, and other large solids from incoming raw wastewater (influent.) The wastewater then enters one of four batch reactors (tanks) to begin the activated sludge process. There, in a carefully controlled environment, the wastewater is mixed with air and live bacteria to oxidize organic material and remove inorganic solids through adsorption. After settling for solids removal, the partially treated wastewater then enters a process known as tertiary treatment where it is filtered through a cloth media disk filtration system. Final treatment includes disinfection with hypochlorite followed by chemical neutralization (dechlorination) to remove residual chlorine before the treated wastewater (effluent) is dispersed into the Withlacoochee River.

Request a Plant Tour

Persons wishing to view the treatment plants should contact the Utilities Department at 229-259-3592 between 8:00 AM – 5:00 PM to schedule a tour. Groups of up to 100 people may be accommodated at one time with advanced notice. After-hours visits may be arranged by special request.




After-hours Emergencies


Dept. Head

Henry Hicks


1016 Myrtle Street 
Valdosta, Georgia 31601

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