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Current Trunk Sewer Projects

A long trench is dug into the dirt with a large excavator at the end. Orange and white caution markers are to the right with green grass and trees on the left.

The Trunk Sewer Projects page highlights major capital improvements undertaken by the Department of Watershed Management to strengthen DeKalb County’s trunk sewer and water infrastructure.

These large-scale projects are designed to increase system capacity, improve reliability, and support current and future community needs. Through the Capital Improvement Program, DeKalb County continues to invest in resilient infrastructure that protects public health, supports growth, and ensures dependable service countywide.

Cobb Fowler North Trunk Sewer Upsizing Project
Satellite map showing Cobb Fowler North Sewer Upsizing Project route in yellow. Key locations: Glenwood Rd., Snapfinger Rd., Cobbs Creek, and I-285.

Project Objective

The Cobb Fowler North Trunk Sewer Upsizing Project has been designed to improve the watershed system in DeKalb County, Georgia. Impacted Stakeholders can learn about the project below. 

Project Start Date: 2032

Project End Date: 2033

Dekalb county is currently acquiring easements for this project.

Community Meeting

DeKalb County Engineering and Construction Management hosted a Public Information Open House (PIOH) event for the Cobb Fowler North Trunk Sewer Upsizing Project.

Residents and business owners impacted by the project had the opportunity to learn about how the project will impact service delivery, traffic, and community schedules.

Press Releases & Social Media

As part of DeKalb County’s $4.27 billion capital improvement program, the Department of Watershed Management (DWM) will be improving the capacity and service of the Watershed systems in DeKalb County. See here:

Cobb Fowler South Trunk Sewer Upsizing Project
A DeKalb County map showing the Cobb Fowler South sewer improvement project marked with a red line.

Project Objective

The Cobb Fowler South Trunk Sewer Upsizing Project has been designed to improve the watershed system in Decatur, Georgia. Impacted Stakeholders can learn about the project below.

Project Start Date: 2025

Timeframe: 36 months from start to finish

Community Outreach

As part of DeKalb County’s $2.4 billion capital improvement program, the Department of Watershed Management (DWM) will be improving the capacity and service of the Watershed systems in DeKalb County.

DeKalb County Engineering and Construction Management hosted an open house for the Cobb Fowler South Trunk Sewer Upsizing Project. Residents and business owners impacted by the project had the opportunity to learn about how the project will the community.

 

Doolittle/Blue/Sugar Creeks Trunk Sewers Upsizing Project
A DeKalb County map showing the Doolittle/Blue/Sugar Creeks trunk sewer upsizing project Section two marked with a red line with a green line marking other streets.

Project Objective

The Doolittle/Blue/Sugar Creeks Trunk Sewers Upsizing Project will address repeat sanitary sewer overflow areas and help meet future sewer demands for the next 50 years.

Start Date: Late 2025

End Date: Early 2027

Community Outreach

DeKalb County Engineering and Construction Management hosted a Public Information Open House (PIOH) for the Doolittle/ Blue/Sugar Creeks Trunk Sewers Upsizing Project.

Residents and business owners impacted by the project had the opportunity to learn about how the project will impact service delivery, traffic and community schedules.

North Fork and South Fork Peachtree Creek Trunk Sewer Upsizing Project
A DeKalb County map showing the North Fork Peachtree Creek trunk sewer upsizing project marked with a green line.

Project Objective

The North Fork and South Fork Peachtree Creek Trunk Sewer Upsizing Project will address repeat sanitary sewer overflow areas and help meet future sewer demands for the next 50 years.

Project Start Date: Pending

Timeframe: Pending

A DeKalb County map showing the South Fork Peachtree Creek trunk sewer upsizing project marked with a green line.

Community Outreach

DeKalb County Engineering and Construction Management hosted a public information open house (PIOH) for the North Fork and South Fork Peachtree Creek Trunk Sewer Upsizing Project.

Residents and business owners impacted by the project had the opportunity to learn about how the project will impact service delivery, traffic and community schedules.

Shoal Creek Trunk Sewer Replacement Project
A DeKalb County map showing the Shoal Creek trunk sewer replacement project marked with orange, purple, and red lines with other areas marked in yellow, orange, white, and green.

Project Objective

The Shoal Creek Trunk Sewer Replacement Project has been designed to improve the watershed system in DeKalb County, Georgia. Impacted Stakeholders can learn about the project below.

Project Start Date: 2026

Timeframe: 9 years from start to finish

Community Outreach

As part of DeKalb County’s $2.4 billion capital improvement program, the Department of Watershed Management (DWM) will be improving the capacity and service of the Watershed systems in DeKalb County.

DeKalb County Engineering and Construction Management hosted a virtual meeting for the Shoal Creek Trunk Sewer Replacement Project.

Residents and business owners impacted by the project had the opportunity to learn about how the project will impact service delivery, traffic, and community schedules.

Upper Snapfinger Trunk Sewer Upsizing Project
A DeKalb County map showing the Upper Snapfinger trunk sewer upsizing project Section one marked with a black line with other areas marked in yellow, orange, and purple.

 

Project Objective

The Upper Snapfinger Trunk Sewer Upsizing Project has been designed to improve the watershed system in DeKalb County, Georgia. Impacted Stakeholders can learn about the project below.

Project Start Date: 2026

Timeframe: 3 years from start to finish

A DeKalb County map showing the Upper Snapfinger trunk sewer upsizing project Section two marked with a black line with other areas marked in yellow, orange, and purple.

 

Community Outreach

As part of DeKalb County’s $2.4 billion capital improvement program, the Department of Watershed Management (DWM) will be improving the capacity and service of the Watershed systems in DeKalb County.

DeKalb County Engineering and Construction Management hosted a virtual meeting for the Upper Snapfinger Trunk Sewer Upsizing Project.

Residents and business owners impacted by the project had the opportunity to learn about how the project will impact service delivery, traffic, and community schedules.

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