Southerly HVAC and Air Purification Project

CIP 650372-100000

The Southerly Wastewater Treatment Plant (SWWTP) serves Columbus and the surrounding area. The plant contains large amounts of machinery and equipment in many separate buildings. Wastewater produces hydrogen sulfide gas which corrodes metals, especially the copper in electrical equipment. The large HVAC/air purification system removes hydrogen sulfide from the air and protects equipment installed in the East Aeration Control Building (EAC). 

The current HVAC system was installed more than 30 years ago in 1987 and has reached the end of its useful life. This project will replace the outdated system.

There will be no interruptions of service or direct impact to the public as a result of the construction of this project.

Work is expected to begin in mid-2024 and be complete by the end of 2025.  

Financing for this contract is being provided through a below market-rate loan through the OEPA’s Water Pollution Control Loan Fund (WPCLF) Program.

The Ohio EPA has completed a Limited Environmental Review (LER) for this project. View the LER(PDF, 768KB) and the letter of "Notice of Issuance of a Limited Environmental Review and Finding of No Significant Impact."

For questions specific to this project please contact Project Manager, Jay Subedi, P.E. at 614-645-7414 or email