Plumbing Contractor in Greenville, Pickens and Surrounding Areas South Carolina. Clogged drains may start out as an inconvenience, but they can be a sign of more serious problems. Drainage issues could be a sign of pipe damage due to weather or tree roots interfering with its normal function. It's essential to catch these problems early before too much damage occurs. If your clogged drain does end up being a sign of a larger problem, than call JC's Plumbing.