As part of ALCOSAN’s Clean Water Plan, the North End Facilities Project was the first major design project awarded under the Plant Expansion Program.

The project began its design phase in November 2018 and was created to increase the plant’s secondary treatment capacity from 250 million gallons per day to 295 million gallons per day. These improvements help ALCOSAN treat more wastewater during wet weather and high-flow events.

The project included two new final settling tanks, a new return activated sludge pump station, two new chlorine contact tanks, a new outfall, an expanded secondary effluent conduit, and a new chemical building with updated equipment and support systems.

Together, these improvements expanded key treatment processes at the Woods Run Wastewater Treatment Plant and improved the plant’s ability to meet the needs of the region.

To make room for the new facilities, ALCOSAN also built a river wall that created about one acre of additional land along the Ohio River. This work required special permits and strong environmental protections.

Design was completed in January 2020, and the construction contract was awarded in May 2020. After five years of construction, the project reached substantial completion in August 2025 and final completion in October 2025.

The North End Facilities Project is an important milestone in ALCOSAN’s Clean Water Plan and supports cleaner waterways for the future.