A surprising number of plumbing calls we get could've been avoided with a few simple habits. Here's our running list of the things worth doing — and the things worth never doing — if you want your plumbing to last.

Why small habits matter more than you'd think

Plumbing systems are forgiving right up until they aren't. A pipe that's been slowly stressed by the wrong habits for years can fail all at once, usually at the worst possible time. The good news: most of what keeps a system healthy is genuinely simple, and none of it requires special tools.

Do

  • Know where your main water shut-off valve is, and check that it still turns freely
  • Run water occasionally in guest bathrooms and rarely-used fixtures to keep traps sealed
  • Have your water heater flushed every year or two to clear sediment buildup
  • Fix small drips as soon as you notice them — they rarely get better on their own
  • Use drain strainers in showers and kitchen sinks to catch hair and food scraps

Don't

  • Don't pour grease or cooking oil down the kitchen drain, even with hot water running
  • Don't flush anything other than toilet paper, including "flushable" wipes
  • Don't use chemical drain cleaners regularly — they can corrode older pipes over time
  • Don't ignore slow drains, assuming they'll clear themselves
  • Don't plant trees or shrubs directly over your sewer line

Quick tip: A five-minute monthly walkthrough — checking under sinks, near the water heater, and around outdoor spigots — catches most small leaks before they become expensive ones.