The City of Nashville is widely known as the “Heart of Country Music” and is the capital of the state of Tennessee. In recent years, the Nashville Metropolitan area has surged to over 1.8 million people. Growth in the downtown area is approaching 25% per year.

Nashville Metro Water Services, a department of the Metropolitan Government of Nashville and Davidson County, is charged with providing drinking water to over 190,000 customers in Davidson, Rutherford, and Williamson Counties. It does this through a distribution
system consisting of more than 3,000 miles of water main, some five feet in diameter.

They manage two water treatment plants, with a combined capacity of 180 million gallons of water per day (MGD), that serve the city of Nashville. The K.R. Harrington and the Omohundro Water Treatment Plants are in North Nashville along the Cumberland River.

The plants were built in what was once the outskirts of town. Like thousands of other water treatment plants across the country, they are now located in the heart of a major metropolitan area.
Both water treatment plants utilize gas chlorine for disinfection of the drinking water. Omohundro, the older plant, commissioned in 1889 and listed in the National Registry of Historic Places, relied on 90-ton railcars for
chlorine gas delivery and storage while the newer K.R. Harrington Plant received truckloads of 2,000-pound gas
cylinders.

Click the link below to access the full case study as a PDF.