Southside Plumbing attempted to clear a backed up mainline at the first guard station. (Far East Station). Approximately 180 feet of cable was pushed down the line, and even after pulling back a large quantity of wipes and a pair of underwear, the drain is still backed up. At this time we are unable to get the drain cable down the line any further and beyond this point, the only other feasible option other than excavating the line is the use of a jetter machine.