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, Sandyston, Stanhope, Wantage, Vernon, Allamuchy, Blairstown, Budd Lake, Hackettstown, Hope, Green Township, Randolph, Chester, Long Valley, Flanders, Mendham, Chatham, Mountain Lakes, E. Hanover, Parsippany, Madison, Florham Park, Ledgewood, Lake Hopatcong, Kenvil, Hopatcong, Morris Plains, Morristown, Cedar Knolls, Mine Hill, Jefferson Twsp, Succasunna, Rockaway, Jefferson, Mount Olive, Pequannock, Wayne, Kinnelon, Pompton Plains, Riverdale, Butler, Boonton, West Milford, Wanaque, Ringwood, Bloomingdale & More