Home water leaks most often start at toilets, faucets, water heaters, appliance supply hoses, and pipe joints. These are the places where water is under pressure and parts wear out, so they are the best places to check first.
The Most Common Leak Spots
- Toilets: worn flappers, loose supply lines, and failed seals at the base
- Faucets: drips from worn washers or cartridges, and leaks under the sink
- Water heaters: the relief valve, fittings on top, and the tank itself
- Washing machines: rubber supply hoses that crack or burst
- Dishwashers and refrigerators: thin supply lines and connections
- Showers and tubs: cracked caulk, grout, and drain seals
Places People Often Miss
Some leaks start where few people look. Outdoor faucets can leak inside the wall after a freeze. Pipes in crawl spaces and behind basement walls can drip for months. Shut-off valves that are rarely used can seep at the handle. Even the water line to the house can leak underground.
How Often to Check
A quick monthly look can catch most leaks early. Open sink cabinets, look behind toilets, and check the floor around the water heater and laundry area. Every few months, check your water meter with all water turned off to catch hidden leaks.
Early Warning Signs
Watch for musty smells, water stains, warped flooring, peeling paint, and a water bill that keeps rising. Catching a leak early usually means a smaller repair and less damage. Write down where and when you noticed each sign so you can describe it clearly.
Keeping towels and a flashlight near the main valve makes it easier to act fast when you do find one.
When you find a leak you cannot stop or fix easily, having it repaired before it spreads protects floors and walls. For a full check of the common leak spots in your home, you can request a plumbing walk-through at (833) 603-1840.