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Conveyance Improvements Underway

Date added: 03-Jan-2017 12:53 PM

Conveyance Improvements UnderwayThe 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.
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Lakewood water, wastewater modernization complete

Date added: 24-Aug-2016 09:18 AM

Lakewood water, wastewater modernization completeThe large-scale project, which began in January 2014, modernizes water and wastewater systems throughout residential and commercial areas in District 11.
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Cured-in-place pipe lining seals the deal

Date added: 24-Aug-2016 09:19 AM

Cured-in-place pipe lining seals the dealCured-in-place pipe (CIPP) lining is one of several sewer rehabilitation methods used to repair leaking or structurally unsound existing pipelines. Little to no digging is involved in this trenchless process, making for a more cost-effective, environmentally friendly process that is completed more quickly and with fewer impacts and disruptions than pipe replacement.
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Mayor Barry visits sewer rehabilitation project

Date added: 25-Jul-2016 07:34 AM

Mayor Barry visits sewer rehabilitation projectMayor 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.
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Service lines connect citizens to public sewer system

THE CLEAN WATER NASHVILLE PROGRAM is constructing sewer rehabilitation projects to renew sewer infrastructure and reduce overflows that may lead to water quality impairments. These sewer rehabilitation projects are located throughout the county, including large projects currently under construction in Council Districts 2, 5, 7, 8 and 29.

Rehabilitation projects focus on repairing sewers that are within Metro’s rights-of-way or easements, repairing sewers buried under streets or alleys, located along creeks or streams, and in some cases, traversing along a property boundary. This work typically includes rehabilitation of a portion of private service lines also known as service laterals.

The service line is an underground pipe that conveys wastewater from a building, including residences, to the public sewer main. Depending on the location of the service lateral and its condition, the rehabilitation work may consist of digging and replacing the pipe or installing a liner to provide structural support and effectively seal the pipe.

In most cases, a cleanout will also be installed near the boundary between the private property and Metro’s rights-of-way or easements. A cleanout is a vertical pipe that extends from the service line to the ground surface to provide access to the service line for cleaning, inspection and maintenance.

Cleanouts are typically constructed of PVC pipe and installed in a utility box near the property boundary.

According to Metro ordinances, the property owner owns and is responsible for maintaining the service line from the building to the public sewer main. If property owners experience any issue with current CWN repair work related to their service line, they should call Metro Water Services at (615) 862-4600.

To date, the Clean Water Nashville Program has repaired approximately 6,500 service laterals, and the work is just getting started. Over the long haul, discovery and repair of damaged service lines within Metro’s rights-of-way or easements will number in the tens of thousands. Eliminating thousands of small leaks will add up to deliver big results when it comes to achieving system renewal and overall water quality improvement.