The Lexington Utilities Department oversees the maintenance of the water and sewer lines for the town. The department currently oversees nearly 200 miles of sewer lines and more than 192 water lines, 394 manholes, 938 fire hydrants, 49 pump stations, three elevated and two ground storage tanks, four high service pumps and a 1.95 MGD (million gallons/day) wastewater treatment plant with 26 staff members.