Even the most professional plumbing maintenance inspection jobs would not eliminate the occasional leak or clog, particularly in older houses. High water tables can cause septic system woes that could impact drains and toilets. A lot of these common problems can be easily addressed. A faucet dripping in the room next to you or a kitchen sink posing problems that you don't have a real solution to can be quite annoying and could keep you awake throughout the night. Dripping faucets also mean an inflated water bill.