How to Inspect Your Plumbing System
Regular plumbing inspections can catch small problems before they become expensive emergencies. Here's how to do a thorough DIY inspection.
Monthly Quick Checks
Under Every Sink:
- Check for moisture or water stains in cabinet
- Look for corrosion on supply lines
- Test shut-off valves (turn them off and on)
- Inspect P-trap for leaks or buildup
Toilets:
- Check for rocking or movement
- Look for water around the base
- Listen for running water between flushes
- Add food coloring to tank; check bowl in 30 minutes for leaks
Water Heater:
- Check for rust or corrosion on tank and fittings
- Test the temperature-pressure relief valve
- Look for water pooling around the base
- Note any unusual sounds during heating
Seasonal Deep Inspection
Supply Lines and Pipes:
| What to Check | Warning Signs |
|---|---|
| Exposed pipes | Corrosion, green/white deposits, rust |
| Pipe connections | Moisture, mineral buildup, drips |
| Flexible supply hoses | Bulging, cracking, rust on connectors |
| Water pressure | Below 40 PSI or above 80 PSI |
Drainage System:
- Run water in all drains; note slow drainage
- Flush all toilets; ensure proper operation
- Check cleanout plugs for leaks
- Look for wet spots in yard (possible sewer issues)
Annual Professional Inspection Points
Consider hiring a licensed plumber annually to check:
- Water heater - Flush sediment, inspect anode rod
- Main sewer line - Camera inspection for root intrusion or damage
- Water pressure - Test and adjust pressure regulator
- Whole-house shut-off - Verify operation
- Water softener - Service if applicable
Signs of Hidden Leaks
Water Bill Spikes
- Compare usage to same month previous year
- Check meter while no water is in use; movement indicates leak
Visual Indicators
- Water stains on ceilings or walls
- Warped or buckling flooring
- Mold or mildew smell
- Wet spots in yard
Sound Clues
- Running water when nothing is on
- Hissing sounds from pipes
- Dripping behind walls
Creating an Inspection Schedule
| Frequency | Tasks |
|---|---|
| Monthly | Check under sinks, test toilets |
| Quarterly | Inspect visible pipes, water heater check |
| Annually | Professional inspection, water heater service |
| Every 5 years | Camera sewer inspection |
Documentation Tips
Keep a plumbing log noting:
- Dates of inspections
- Any repairs made
- Professional service visits
- Age of water heater and major fixtures
This documentation helps with warranty claims and provides valuable information for future homeowners.