The Daviess County Rural Water System will begin its semi-annual flushing of water mains and hydrants today. The flushing operation will continue through the month of October. Flushing in the south area will start at Bussard Road and move south while flushing in the north area will start at County Road 100 North and continue north. Low water pressure may be experienced during that time. After flushing, customers may also experience discolored water for a short time.