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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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Whites Creek project results in water quality improvement

The Tennessee Department of Environment and Conservation (TDEC) and Metro Water Services (MWS) lifted a longstanding ‘water contact advisory’ for a 2.9-mile section of Whites Creek, a sign of improved water quality for Whites Creek and the Cumberland River.
The lifted segment has been on TDEC’s 303(d) list, a list of impaired streams due to pathogens and nutrients, for several years. The Tennessee Water Quality Control Act requires that the TDEC post signs and inform the public when bacteria in water or contaminants in sediment or fish tissue can cause public health to be unduly at risk from exposure. While Whites Creek will remain on the 303(d) list for nutrients, the water quality standards for pathogens have been met.
“This is a result of several years of local and state environmental experts working together to find a solution to a problem,” said TDEC Commissioner Bob Martineau. “Although there is still work to do, lifting the water contact advisory is exciting news for all of us who care about the environment, especially those who live near this particular segment of Whites Creek.”
The initial cause of the advisory is attributed to the deterioration of the old Whites Creek Pumping Station, which was first constructed in the 1960’s. Undersized and unreliable, the pumping station began to cause sanitary sewer overflows into the creek.
In 1990, total capacity of the pumping station was raised from 5 million gallons per day (MGD) to about 16 MGD. However, increased rainwater volume seeping into deteriorated sewer pipes continued to overwhelm the pumping station. In 2012 a $20 million Clean Water Nashville project began to upgrade Whites Creek Pumping Station to 50 MGD capacity and make other improvements. Since its November 2013 completion, WCPS has been operating successfully and has not experienced a sanitary sewer overflow even with exceptionally high flows.
“A new and improved pumping station is now online bringing one of Nashville’s most chronic sanitary sewer overflows into compliance,” said MWS Director Scott Potter. “This is big news for the residents of this area, and we are excited about the advisory being removed.”
TDEC has prepared a short video about the event, which can be viewed here:https://www.youtube.com/watch?v=On1-Bv88ZTA