Metro Water Services (MWS) provides drinking water to over 700,000 people in and around Nashville, Tennessee, through two 90-mgd water treatment plants (WTPs): the Omohundro WTP, which was built in 1889 and is on the National Register of Historic Places, and the KR Harrington WTP, constructed almost a century later in 1978.
These aging plants have continued to be placed under the extended stress of meeting service area demands. As such, MWS decided to implement a seven-year effort to significantly rehabilitate and modernize their two treatment facilities under a construction manager at-risk (CMAR) project delivery structure.
From our new Nashville office, Carollo will design and oversee the construction of the plants’ new raw and intermediate pumping stations, pre-treatment and filter improvements, chemical feed upgrades, clearwell facilities, and, most significantly, new post-filter granular activated carbon (GAC) adsorption facilities to improve the taste and odor of drinking water and minimize disinfection by-products (DBPs). The project team will logically sequence and coordinate these comprehensive modifications so the plants may continue producing safe, high-quality water for MWS’s customers with minimal operational interruptions.
This important project will support MWS in reliably achieving their water quality goals now and long into the future.