Cleanwater Nashville

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Additional updates

Smoke testing yields clues for system repair

Date added: 26-Aug-2015 07:35 AM

Smoke testing yields clues for system repairCLEAN WATER NASHVILLE USES A VARIETY OF TECHNIQUES to assess the condition of the underground sewer system. One of those techniques, smoke testing, is a low-tech method, but can be effective at identifying potential defects in the system.
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Natural setting shapes repair approach

Date added: 26-Aug-2015 07:33 AM

Natural setting shapes repair approachDAVIDSON COUNTY’S SURROUNDING environment is an ever-present factor in how the Clean Water Nashville Program plans construction repairs on aged and defective wastewater infrastructure.
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East Nashville rehab projects continue in Inglewood and Jackson Park neighborhoods

Date added: 26-Aug-2015 07:31 AM

East Nashville rehab projects continue in Inglewood and Jackson Park neighborhoodsCOMPREHENSIVE SEWER SYSTEM RENEWAL throughout large areas of East Nashville and Inglewood continues with the start of the Shelby Park Rehabilitation—Area 4—Brush Hill Road project.
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New program website expands public access

Date added: 26-Aug-2015 07:27 AM

New program website expands public accessCLEAN WATER NASHVILLE HAS LAUNCHED A NEWLY DESIGNED WEBSITE that provides easier navigation, expanded public resources and improved tools such as an interactive map to provide citizens access to information about this important program. The website was redeveloped based on feedback provided by representatives from Metro Water Services, public and private partners and participating stakeholders.
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2011 Collection System Structural Defect Repair project completed

The 2011 Collection System Structural Defect Repair project involved repair of wastewater infrastructure across an expansive area of the Whites Creek and Richland Creek drainage basins in northwest and west Nashville. The project is the largest so far from a geographic standpoint, spreading across 10 Metro Council districts.

Work included repair to cracked and broken system pipes that had begun to leak and diminish system capacity. The program’s contractors used closed circuit television cameras, extended by cables into the pipe system, to identify deterioration and catalog more than 25 major repairs.


Construction crews used two primary methods to make repairs to underground pipes. One, known as cured in place pipe, involved inserting a flexible resin saturated liner into a manhole and along the length of the pipe. The liner forms to the circular shape of the pipe, and then workers introduce steam or hot water that hardens the epoxy resin and forms a new plastic liner within the original host pipe for a secure, permanent repair. The second method involved excavating six- to- eight-foot sections of broken pipe for installation of replacement pipe that is coupled into the existing system.

All roadway, public easements and residential properties that were disturbed for repairs were promptly returned to pre-existing condition.