The most common plumbing problems are clogged drains and toilets, leaky faucets and pipes, water heater issues, low water pressure, and a running toilet. You don’t realize how much you rely on plumbing until you start having issues. A dripping faucet here, a slow drain there — as your home ages, it’s natural to have some plumbing problems. Some of those issues are simple enough to DIY without much difficulty. Others come with some potential dangers and are better left to the professionals.