Detecting leaks early can prevent extensive water damage and save money on utilities. Here’s how to spot common household leaks before they become major problems.
Before You Begin: Safety First
- Turn off electrical devices near suspected leak areas
- Avoid entering areas with standing water
- If you smell gas or suspect a gas leak, leave immediately and call your utility company
- When in doubt, contact a licensed plumber
Kitchen Leak Detection
Under-Sink Leaks
- Clear out under-sink storage
- Line the cabinet with paper towels
- Check after 24 hours – any wet spots indicate leak location
- Inspect:
- Faucet base and connections
- Garbage disposal seals
- Supply line connections
- P-trap connections
Dishwasher Leaks
- Check the floor beneath and around the dishwasher
- Look for:
- Water stains on adjacent cabinets
- Warped flooring
- Rust around base
- Run an empty cycle and observe
Bathroom Leak Detection
Toilet Leaks
- Add food coloring to tank
- Don’t flush for 30 minutes
- If bowl water changes color, there’s a flapper leak
- Check for:
- Puddles around base
- Loose wobbling
- Damaged caulk seal
Shower/Tub Leaks
- Inspect caulking and grout
- Check for:
- Loose tiles
- Soft spots on nearby walls
- Water stains on ceiling below
- Run shower and observe walls/floor below
Hidden Leak Indicators
General Signs
- Unexplained high water bills
- Sound of running water when fixtures aren’t in use
- Musty odors
- Mold or mildew growth
- Peeling paint or wallpaper
- Warped walls or ceilings
Water Meter Test
- Turn off all water sources
- Record meter reading
- Wait 2 hours (don’t use any water)
- Check meter again
- If it changed, you likely have a leak
Preventive Measures
- Regular inspection of visible plumbing
- Monitor water bills for unusual increases
- Maintain caulk and grout
- Check appliance hoses annually
- Know location of main water shutoff
Remember: This guide helps identify leaks, but repairs often require professional expertise. When in doubt, contact a licensed plumber.