Plumbing Maintenance Checklist

A plumbing maintenance checklist covering pipes, drains, the water heater, leaks and shut-off valves.

Published June 23, 2026

Leaks & Water Detection

Check under sinks and around toilets for drips and dampness
Test for hidden leaks by reading the water meter with everything off
Movement with no water running means a leak
Look for water stains, warping or musty smells on walls and floors
Check toilet for silent leaks with a few drops of food coloring
Color in the bowl means the flapper is leaking
Inspect washing machine and dishwasher hoses for bulges or cracks
Consider a smart leak detector near the water heater and washer

Drains & Pipes

Flush slow drains with hot water and a baking soda and vinegar mix
Clean hair and debris from sink and shower stoppers
Avoid pouring grease, oil or coffee grounds down the drain
Use drain strainers in showers and kitchen sinks
Inspect exposed pipes for corrosion, sweating or mineral deposits
Skip harsh chemical drain cleaners that damage pipes over time

Water Heater

Flush sediment from the tank once a year
Test the temperature and pressure relief valve for safe operation
Set the thermostat around 120°F for safety and efficiency
Lower temperatures reduce scalding and energy use
Check for rust, leaks or pooling water around the base
Inspect the anode rod every few years to slow tank corrosion
Hire a licensed plumber for gas water heater repairs

Shut-Off Valves

Locate the main water shut-off valve for the whole house
Test that the main valve turns freely without sticking
Identify shut-off valves under sinks and behind toilets
Label valves so anyone can find them in an emergency
Show every household member how to shut off the water

Fixtures & Fittings

Clean faucet aerators and showerheads to clear mineral buildup
Replace worn washers and seals on dripping faucets
Recaulk around tubs, showers and sinks where grout is cracked
Check that toilets flush fully and refill without running
Tighten loose handles, supply lines and fittings

Seasonal & Outdoor

Insulate exposed pipes before winter to prevent freezing
Drain and shut off outdoor faucets before the first freeze
Disconnect and store garden hoses for winter
Test the sump pump before the rainy season and after long dry spells
Clear outdoor drains and downspouts so water flows freely

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A plumbing maintenance checklist is a routine for keeping your home's pipes, drains, fixtures and water heater in good shape — checking for leaks, clearing slow drains and knowing where your shut-off valves are. Staying ahead of small issues prevents water damage, mold and the emergency repairs that come from burst pipes and silent leaks.

This checklist covers everyday checks plus seasonal jobs for homeowners. Many tasks take just minutes and can save thousands in water damage.

For gas water heaters, sewer line problems and major repiping, hire a licensed plumber rather than risking gas leaks or code violations.

Keep it under the sink: print this plumbing maintenance checklist or download it as a PDF and check off each task as you complete it.

FAQ

How often should I do plumbing maintenance?

Check for leaks and clear slow drains monthly, test shut-off valves and inspect the water heater a few times a year, and flush the water heater annually to keep everything running well.

Can I download this plumbing checklist as a PDF?

Yes. You can print this plumbing maintenance checklist or download it as a PDF and keep it handy so routine checks and seasonal tasks are easy to track.

How do I find a hidden water leak?

Check the water meter when no water is running — if it moves, you have a leak. Look under sinks, around the water heater, and for stains, warping or musty smells on walls and floors.

Why should I know where my shut-off valves are?

When a pipe bursts or a fixture floods, shutting off the water fast limits the damage. Locate and test the main shut-off and individual fixture valves before an emergency happens.

What plumbing jobs need a licensed plumber?

Hire a licensed plumber for gas water heaters, sewer and main line issues, repiping, and anything behind walls. These involve safety risks, permits, and code requirements beyond routine DIY upkeep.