Originally constructed in the 1970s with a capacity of 4.5 million gallons per day (MGD), the Hillsborough South County Wastewater Treatment plant was in need of capacity expansion and systems upgrades to maintain regulatory compliance standards. With the explosive growth of the Ruskin, Sun City Center, Apollo Beach, and Falkenburg communities and the county’s projected growth, PCL constructed the project to expand the facility, by 5.5 MGD, to a 10 MGD facility.
Although the project was considered an expansion, the majority of the work consisted of building a new 10 MGD facility alongside the existing 4.5 MGD facility. PCL constructed several new facilities as well as upgrades to the facility’s wastewater treatment process. This included the addition of a new headworks, aeration basin, blower building for turbo blowers, two new secondary clarifiers, a new UV facility, new intermediate pump station, filter additions, and new effluent pump stations. The project also included two new electrical buildings with generators for backup power and a new administration building.
Owing to the project’s congested site location, PCL relied on multiple bypasses and significant coordination with Hillsborough County in order to keep the existing plant operational during construction.