Look for quiet water leaks before they damage the home
A small leak can waste water, raise bills, and damage cabinets, floors, walls, or equipment before it becomes obvious.
When it usually needs attention
Ongoing home-care habit
EPA WaterSense recommends regular checks and response to changes in bills, flow, sound, staining, or moisture.
When this guide applies
A non-invasive visible leak review applies to occupied homes.
What to do
Look and listen at toilets, faucets, showerheads, under sinks, appliance connections, the water heater, and accessible hose connections; compare water use only when no fixtures are running.
Applies when: A non-invasive visible leak review applies to occupied homes.
Who should handle it: Residents report and may use a known safe main shutoff during an active leak; repair responsibility follows ownership, lease, association, utility, and local rules.
Tools
- Flashlight
- Dry paper towel for confirming a safely reachable drip
- Water bill or utility leak alert if available
Parts and supplies
- Absorbent towel or container for a minor active drip
Safety gear
- Gloves for ordinary cleanup
- Avoid sewage, mold, and wet electrical equipment
Before you start
- Know the main water shutoff
- Keep cabinets and equipment safely accessible
Power, water, or fuel shutoffs
- Use only a previously identified safe water shutoff
- Do not touch wet electrical controls
Cleaner or chemical limits
Do not use drain cleaner, bleach, degreaser, or sealant to hide an unidentified leak.
Stop and get help when
- Leave or call emergency help for flooding that threatens occupants or structure
- Do not enter standing water near electrical equipment
- Stop for sewage, gas odor, hidden piping, or structural damage
Who to call: Use the utility, responsible owner, plumber, appliance service, water-mitigation provider, electrician, or emergency service appropriate to the source and severity.
Reviewed sources
- Home MaintenanceEPA WaterSense · reviewed July 13, 2026
- A Brief Guide to Mold, Moisture and Your HomeU.S. Environmental Protection Agency · reviewed July 13, 2026
- Moisture Control GuidanceU.S. Environmental Protection Agency · reviewed July 13, 2026