If you're experiencing discolored water, smelly pipes, noisy pipes, or you can see visible corrosion on your pipes, these are clear indicators that you may need piping repair. Discoloration can be due to rust or sediment, foul odors suggest bacteria or decay, unusual noises could be due to loose pipes or high water pressure, and corrosion can lead to leaks or bursts. It's important to address these issues promptly to prevent further damage.