Your home's plumbing is one of the most important systems working behind the scenes to keep everything running smoothly. But even the best plumbing systems can suffer from everyday mistakes that many homeowners unknowingly make. The good news? With a bit of knowledge and a few simple changes, you can avoid these costly missteps and keep your plumbing in excellent shape for years to come. Here are the most common plumbing mistakes we see—and how to avoid them. Mistake #1: Igno