The Walsh Group expanded Pasco County’s existing wastewater treatment plant from 3 million gallons per day to 6 million gallons per day. The project included a new headworks facility, two aeration basins, one clarifier, a filter structure, backwash holding basin, chlorine contact basin, sludge holding basin, high-service pump station and dewatering facility. Additional improvements included three electrical buildings, pumping systems, chemical storage and feed systems, a backup generator and related facility upgrades.