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Citico Water Treatment Plant - Replacement of Sedimentation Basin 1

Tripling treatment capacity and capitalizing on space to provide safe drinking water from the Tennessee River

  • 18

    Million Gallons/Day

  • Chattanooga, Tennessee

    Chattanooga, Tennessee

Keeping the taps on while upgrading 100-year-old water treatment basins

The Tennessee American Water Company (TAW) pledges to provide safe water for the community relying on Citico Water Treatment Plant (WTP)—in alignment with the U.S. Environmental Protection Agency’s (EPA’s) partnership goals. When the WTP’s two 100-year-old sediment basins began to show signs of deterioration, TAW engaged our help to improve its infrastructure.

The WTP didn’t have room for a new basin, and space was even tighter for upgrading the capacity while keeping the WTP fully functional. We focused on finding a solution to replace Basin 1 and retire Basin 2 within these site constraints while meeting water quality needs. To construct a new Basin 1 within the existing footprint of the old basin, we coordinated closely with TAW staff and their contractor. Design and construction included careful sequencing to maintain treatment capacity and protect existing facilities. We demolished and backfilled Basin 2, giving TAW space for future facilities.

As a result, the plant’s treatment capacity tripled to 18 million gallons (68.1 million litres) per day, all within the existing footprint. Completed two months ahead of schedule, the WTP exceeds design water quality performance and provides TAW with operational flexibility for decades to come.

At a Glance

  • Tennessee American Water Company
Building Recognition in Chattanooga, Outstanding Engineering Project for 2021
Meet Our Team

Becky Hachenburg, Vice President, Regional Water Sector Leader

So grateful to be able to combine my love for the natural environment, water, and engineering design into a rewarding career.
Becky Hachenburg Vice President, Regional Water Sector Leader Read More

David Bible, Project Manager

My passion is creating clean water out of dirty water.

Stephanie Kopec, Civil Engineer

I love having a positive impact on communities by working with our clients to develop the best solutions for them.

Harold E. Schmidt, Jr., Senior Principal, Regional Practice Leader, Wastewater

Protecting our planet starts with us—by being stewards of the environment and staying in front of industry trends, we can make it happen.
Harold E. Schmidt, Jr. Senior Principal, Regional Practice Leader, Wastewater Read More

Charlie Bromley, Vice President, Treatment Engineer

Water treatment is a challenging field and the immediate impact our efforts have on communities are measurable, obvious, and essential.
Charlie Bromley Vice President, Treatment Engineer Read More

Becky Hachenburg

Vice President, Regional Water Sector Leader

David Bible

Project Manager

Stephanie Kopec

Civil Engineer

Harold E. Schmidt, Jr.

Senior Principal, Regional Practice Leader, Wastewater

Charlie Bromley

Vice President, Treatment Engineer

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