The City of Griffin held its opening ceremonies on December 14, 2005 for the new reservoir at Still Branch. Located in Pike County on an 850 acre site, the reservoir takes up 475 acres and holds 3.5 billion gallons of water. The treatment plant, in the first phase, will treat 8.0 mgd in 2006 and eventually will treat 48 mgd. Still Branch Reservoir was completed in 2005 and will begin supplying drinking water in January 2006. The reservoir/filter plant is designated by the Georgia EPD as a regional reservoir supplying water to Pike County, Spalding County, East Coweta County, North Meriwether County, Williamson, Zebulon, and Griffin.