Program Updates

Metro Water Services is advancing plans for a major expansion of the Central Wastewater Treatment Plant (CWWTP). The plant was originally constructed in 1958 and has been expanded several times through the years to address environmental quality standards and to meet demands of Nashville's growth.

The majority of Nashville's sewer system lies hidden beneath streets and buried in easements. Since it cannot be readily observed, Metro Water Services (MWS) deploys a variety of technologies to assess the system's condition.

Now in its sixth year, the Clean Water Nashville Program has achieved considerable advancement for both environmental compliance and overall system improvements across Davidson County.

The Brick Church Pike Pipe Improvements project illustrates the sometimes demanding challenges that are encountered as Clean Water Nashville Overflow Abatement Program (CWNOAP) renews and enlarges Davidson County's sewer system.

The large-scale project, which began in January 2014, modernizes water and wastewater systems throughout residential and commercial areas in District 11.

Cured-in-place pipe (CIPP) lining is one of several sewer rehabilitation methods used to repair leaking or structurally unsound existing pipelines.

Mayor Megan Barry recently visited Clean Water Nashville's 28th Avenue Rehabilitation – Area 1 project site to learn more about how Nashville's aging sewer infrastructure is being renewed. As pictured, B.J. Kersteins of Insituform Technologies, Inc. (the construction contractor for this work) shows Mayor Barry a cured-in-place pipe liner. The pipe liner is inserted in the sewer to renew the system without excavating streets. Repairing sewers in this way extends the life of the system and addresses downstream overflows by reducing the amount of rainwater that infiltrates the system.