David Schaefer Septic, with locations in Andover NJ and Pequannock Twsp, serves most of northern New Jersey including Morris County, Warren County, Sussex County & Passaic County and parts of Somerset & Hunterdon Counties including the towns of Andover, Branchville, Byram, Franklin, Fredon, Hamburg, Lafayette, Newton, Sparta, Stanhope, Vernon, Allamuchy, Blairstown, Budd Lake, Mount Olive, Hackettstown, Hope, Green Township, Randolph, Chester, Long Valley, Flanders, Mendham, Chatham, Mountain Lakes, Parsippany, Madison, Florham Park, Ledgewood, Lake Hopatcong, Kenvil, Hopatcong, Morris Plains, Morristown, Cedar Knolls, East Hanover, Mine Hill, Jefferson Twsp, Succasunna, Rockaway, Pequannock, Wayne, Kinnelon, Pompton Plains, Riverdale, Butler, Boonton, West Milford, Wanaque, Ringwood, Bloomingdale & More