Home InspectionsHome InspectorsInteriorsPlumbing

Plumbing Inspections

Plumbing Inspection Standards

The inspector should:
• inspect the interior water supply and distribution pipes
• inspect the plumbing fixtures and faucets
• inspect the interior drain, waste and vent systems
• inspect the water heating equipment and supply systems
• inspect the vent systems, flues and chimneys
• inspect the fuel storage and fuel distribution systems
• inspect the water heating equipment and energy source
• describe the location of main water and fuel shut-off valves

The inspector is not obligated to:
• inspect clothes washing machine connections
• inspect the interior vent systems, flues and chimneys that are not readily accessible
• inspect any wells, well pumps and water storage systems
• inspect any water conditioning systems
• inspect any solar, geothermal, renewable energy water heating systems
• inspect any fire extinguishing and sprinkler systems
• inspect any irrigation systems
• inspect any septic, sewage disposal systems
• determine water supply source (public or private)
• determine water quality
• determine the adequacy of combustion air components
• measure water supply flow and pressure, well water quantity
• fill shower pans and fixtures for leak tests

Checklist of common Plumbing Issues
 Slow draining tubs
 Hot and cold water reversed at the tub, shower or sink
 Loose tub drain spouts
 Tub spouts that do not divert all of the water to the shower head
 Cracks in the tile or grout on a shower floor
 Ponding water on a tile shower floor
 Shower doors that do not open and close properly
 Bathroom vanity sink faucet with low water pressure
 Slow draining bathroom vanity sinks
 Bathroom vanity sink faucet leaking at the handle/valve
 Loose toilet tanks
 Leaks at toilet and sink shut off valves
 Toilet bases that rock back and forth
 Water spraying inside the tank during the refilling process
 Elevated moisture readings around the base of toilets
 Corrosion at disposal fittings
 Dishwasher drain hoses that do not loop up to create an air gap
 Corrosion at shut off valves under sinks
 Hot water heating systems beyond 12 years of age
 Corrosion at hot water heater fittings
 Rotten egg smell from the hot water at sinks, showers or tubs
 Hot water tanks that are not properly supported and/or missing seismic strapping
 Hot water systems that are more than 12 years old
 Drain pans missing from underneath hot water tanks/systems
 Hot water tank drain pans without drain piping connected
 Hot water tank drain lines with negative slope
 Hot water tank pressure relief valve drain pipes not terminating safely to the exterior
 Tankless water heaters in attic spaces without drain pans to catch potential leaks
 Moisture stains under kitchen or bathroom sinks
 Fungus growing inside cabinets due to an elevated moisture condition or plumbing leak
 Leaks at drain pipe fittings under sinks
 Loose exterior hose bibs (faucet)
 Presence of polybutylene water supply piping with large plastic fittings
 Active water leaks in the supply piping system
 Water pipes exposed to cold temperatures that are not properly insulated
 Inoperative jetted garden tubs
 Plumbing vent pipes that terminate in the attic or other interior spaces
 Cracked or damaged washing machine pans
 Natural gas pipes not properly secured to structural members in attics and crawl spaces

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