Inside e2i2: Behind-the-scenes look at the first phase of the City’s Clear Chattanooga Program

CHATTANOOGA, Tenn. — Visible from I-75, the e2i2 equalization stations are quickly becoming one of Chattanooga’s most recognizable infrastructure projects.

Constructed in conjunction with the Hamilton County Water & Wastewater Treatment Authority (WWTA), the e2i2 project will include two wet weather equalization stations capable of storing approximately 30 million gallons of excess wastewater during heavy rain events, the City of Chattanooga says.

They say the project is designed to reduce sanitary sewer overflows while strengthening the regional wastewater system to support Chattanooga’s continued growth.

“This project sits at the boundary of the City’s and Hamilton County’s wastewater systems, and that partnership has been essential to its success,” said Mark Heinzer, Administrator of the Chattanooga Wastewater Department. “It’s also the City’s first wastewater design-build project, delivered in coordination with the Industrial Development Board, and it represents a new way of delivering major infrastructure more efficiently while investing in our community’s future.”

They say the e2i2 project is the first phase of the City’s Clear Chattanooga Program and will improve water quality in South Chickamauga Creek while helping protect the Tennessee River watershed.

When construction is complete in 2027, the South Chickamauga Greenway—closed during construction for nearly two years—will reopen, restoring public access to the corridor.

To date, e2i2 has produced approximately $39 million in local investment.

The project is being delivered through a progressive design-build partnership led by Brasfield & Gorrie in collaboration with Jacobs Engineering, Gresham Smith, Barge Design Solutions, Croy and Terracon.

The e2i2 project is scheduled for completion in 2027.