The New Homeowner's Drain Checklist for Your First Week

Summary: 

• Test every sink, shower, tub, and toilet during your first week.
• Check for slow drains, leaks, odors, and hidden moisture.
• Inspect gutters, floor drains, and the sump pump for drainage issues.
• Locate the main water shutoff before an emergency happens.
• Watch for warning signs such as backups, multiple slow drains, and standing water.
• Install drain strainers to help prevent food, hair, and debris from entering the plumbing.

The New Homeowner's Drain Checklist for Your First Week

Your first week in a new home is the best time to inspect your drains and plumbing system. Fixtures may appear to work during a home showing but reveal hidden problems once they are used regularly.

Slow drains, hidden leaks, unpleasant odors, and moisture around plumbing fixtures often go unnoticed until they become costly repairs. Understanding these common causes of clogged drains can help you identify problems earlier and prevent them from getting worse. 

This first-week drain checklist walks you through the most important fixtures and drainage areas to inspect, helping you catch potential problems before they become larger plumbing issues.

First Week Drain Checklist at a Glance

Inside the Home

• Run every faucet and shower.
• Fill and drain each sink and tub.
• Check cabinets and visible plumbing connections.
• Test every toilet.
• Perform a toilet dye test.
• Test the garbage disposal, if installed.
• Test the sump pump according to the manufacturer’s instructions.
• Inspect dishwasher and washing machine connections.
• Check floor and utility drains.
• Locate the fixture shutoffs and main water valve.

Outside the Home

• Remove visible gutter debris.
• Check downspout extensions.
• Inspect the ground around the foundation.
• Clear leaves from exterior drains and grates.
• Look for standing water.
• Identify the sewer cleanout if it is visible.

Completing this checklist provides a good baseline for your home's plumbing system and makes future maintenance much easier.

Check #1: Test Every Sink, Shower, and Tub

A fixture may appear to drain normally during a quick inspection but reveal problems after running water for a longer period. Testing every fixture helps identify slow drains before they become complete blockages.

Run the Water

For each sink, shower, and tub:

• Turn on the water.
• Let it run for 60 to 90 seconds.
• Watch whether the basin begins to fill.
• Turn the water off.
• Observe how quickly the remaining water drains.

This simple test often reveals drainage issues that are easy to miss during a brief walkthrough.

Test More Than a Trickle

Run water at a normal household flow rather than a slow trickle. A weak stream may not reveal a partial blockage that becomes noticeable during everyday use.

There is no need to overflow the fixture. Simply use enough water to simulate normal daily use.

Check for These Warning Signs

• Water pools around the drain.
• The fixture drains slowly.
• Bubbles rise from the drain.
• Gurgling sounds come from the drain.
• Water backs up into another fixture.
• A sewer-like odor comes from the drain.
• The faucet continues dripping after it is turned off.

These warning signs often indicate that further inspection or maintenance may be needed. In many cases, homeowners can clear a clogged sink drain themselves before the blockage becomes more severe. 

Check #2: Look Under Every Sink for Hidden Leaks

Small plumbing leaks are easy to overlook because they often develop slowly inside cabinets. A quick inspection can help identify moisture before it causes damage.

Inspect These Areas

Use a flashlight and examine:

• Hot and cold supply lines
• Shutoff valves
• Dishwasher drain hose
• Faucet connections
• P-trap joints
• Cabinet floor
• Garbage disposal connections
• Back wall of the cabinet

Even a small drip can eventually damage cabinets or encourage mold growth.

Use a Dry Paper Towel

Wipe around each plumbing connection with a dry paper towel.

Small leaks often appear on the towel before water becomes visible on the pipe or cabinet.

Look Beyond Standing Water

Also look for signs of older leaks, including:

• Swollen cabinet material
• Water stains
• Peeling surfaces
• Rust or corrosion
• Musty odors
• Mold-like growth

If you cannot safely determine the source of moisture, arrange a professional inspection.

Check #3: Fill and Release Each Basin

Running water is helpful, but filling a sink or tub creates a much better drainage test. It can also help reveal what's really behind a slow-draining sink before it develops into a complete blockage. 

How to Perform the Test

• Close the stopper.
• Fill the basin partway.
• Release the stopper.
• Watch how the water drains.
• Check underneath the sink while the basin is emptying.

This test can reveal drainage problems that may not appear during normal faucet use.

What the Results May Mean

These observations do not diagnose the exact problem, but they provide useful clues about where additional inspection may be needed.

Check #4: Check the Kitchen Sink and Garbage Disposal

The kitchen sink handles more food waste than any other drain in the home. Testing it during your first week can help identify hidden drainage problems before they become recurring clogs.

Test Both Sink Bowls

If your kitchen has a double-basin sink:

• Run water in each bowl separately.
• Fill and drain each side.
• Check whether water rises in the opposite bowl.
• Inspect the shared drain connections underneath.

Water backing up into the second bowl may indicate a partial blockage or drainage restriction.

Test the Garbage Disposal Safely

If your sink includes a garbage disposal:

• Run cold water.
• Turn on the disposal briefly.
• Listen for grinding, humming, rattling, or unusual vibration.
• Turn it off immediately if it only hums or appears jammed.

Never place your hand inside the garbage disposal. Always follow the manufacturer's instructions before attempting any maintenance.

Check the Dishwasher Connection

Run a short dishwasher cycle or observe it during its first normal use.

Look for:

• Water leaking beneath the sink
• A loose drain hose
• Water backing into the sink
• Standing water inside the dishwasher
• Moisture around the dishwasher base

Finding these issues early can help prevent water damage beneath your kitchen cabinets.

Check #5: Start Preventing Kitchen Clogs Immediately

Your first week is the ideal time to establish good kitchen drain habits. Preventing debris from entering the drain is much easier than removing a clog later. 

Check #6: Test Every Toilet

Every toilet should flush properly, refill normally, and remain dry around the base. A few simple tests during your first week can help identify problems before they become expensive repairs.

Perform a Normal Flush Test

For each toilet:

• Flush once.
• Watch how quickly the bowl empties.
• Confirm the bowl refills normally.
• Listen after the refill cycle ends.
• Check around the tank and base for moisture.

A properly functioning toilet should complete the cycle without unusual sounds or leaks.

Perform a Toilet Dye Test

A silent toilet leak can waste a significant amount of water without being obvious.

To perform a dye test:

• Remove the tank lid.
• Add several drops of food coloring or a leak detection tablet to the tank.
• Wait about 10 to 15 minutes without flushing.
• Check the bowl.

If colored water appears in the bowl before flushing, the toilet may have a leaking flapper or another internal issue.

Watch for Common Problems

• Weak or incomplete flushing
• Water rising unusually high
• Frequent clogging
• Continuous running
• Random refilling
• Water around the base
• Toilet movement during normal use

If the toilet shifts during regular use or moisture appears around the base, arrange a professional inspection rather than attempting to tighten it yourself.

Check #7: Check Bathroom Drains for Hair and Soap Buildup

Bathroom drains often contain buildup left behind by previous occupants. A quick inspection during your first week can help prevent recurring clogs and improve drainage. 

If you have pets, remember that pet hair is a common culprit in bathtub clogs, making a drain catcher even more valuable for preventing buildup. 

Check #8: Inspect Laundry and Utility Drains

Laundry and utility areas are easy to overlook during a home inspection. Because many of the plumbing connections are hidden behind appliances, small leaks may go unnoticed until damage has already occurred.

Check the Washing Machine

Inspect the washing machine and surrounding area before and during the first wash cycle.

Look for:

• Hot and cold supply hoses
• Shutoff valves
• Drain hose
• Standpipe
• Moisture on the floor
• Water stains on nearby walls

Run a short wash cycle and stay nearby while the machine fills and drains.

Check the Utility Sink

Run water into the utility sink and allow it to drain completely.

Inspect:

• Faucet connections
• Supply lines
• P-trap
• Cabinet or floor beneath the sink

A quick inspection can reveal loose fittings or slow drainage before they become larger problems.

Inspect the Water Heater Area

Carefully inspect the area around the water heater.

Look for:

• Visible moisture
• Corrosion
• Rust
• Loose plumbing connections
• Water stains beneath the unit

Do not operate unfamiliar valves unless you have reviewed the manufacturer's instructions or consulted a professional.

Check #9: Inspect Basement and Floor Drains

Floor drains often receive very little attention, but they play an important role in protecting your home from water damage and sewer gases.

Look for Signs of Trouble

Inspect every basement or utility floor drain for:

• Sewer odors
• Dry drain openings
• Rusted grates
• Standing water
• Sediment buildup
• Evidence of previous backups
• Moisture on the surrounding floor

These signs may indicate that the drain needs maintenance or further inspection.

Refill a Dry Trap

Rarely used floor drains can dry out over time.

If a drain appears dry, slowly pour water into it to refill the trap and restore the water seal that helps block sewer gases.

If the drain backs up, produces a strong sewage odor afterward, or shows signs of wastewater, stop using it and contact a plumber.

Locate the Sewer Cleanout

Identify the location of the home's sewer cleanout if it is accessible.

Knowing where it is can save valuable time during a plumbing emergency.

Avoid opening the cleanout unless instructed by a qualified professional, as backed-up sewer lines may be under pressure.

Check #10: Test the Sump Pump

If your home has a basement or crawlspace, test the sump pump during your first week to confirm it is ready before heavy rain or flooding occurs. 

Check #11: Inspect Gutters, Downspouts, and Exterior Drains

Drainage problems often begin outside the home rather than inside it. Keeping water away from the foundation helps protect both the structure and the plumbing system.

Clear Visible Debris

Inspect and remove visible debris from:

• Gutters
• Downspout openings
• Downspout drains
• Window wells
• Storm grates
• French drain entrances
• Patio and driveway drains

Leaves and debris can quickly restrict water flow during heavy rain.

Follow the Water

During the next rainfall, observe how water moves around your home.

Check whether it:

• Flows through the gutters
• Exits the downspouts properly
• Collects beside the foundation
• Pools near basement windows
• Backs up through exterior drains

Water should move away from the house as efficiently as possible.

Check Downspout Discharge

University of Minnesota Extension says downspouts should discharge water at least 4 feet away from the home's foundation.

If water empties directly beside the house, it can contribute to foundation moisture and basement water problems over time.

Examine the Ground Slope

Walk around the home's perimeter and observe the grading.

The ground should slope away from the foundation rather than toward it. Areas where water collects after rain may require further evaluation.

Check #12: Locate Every Important Water Shutoff

Knowing where your shutoff valves are before an emergency occurs can significantly reduce water damage.

Find and Label

Locate each of the following:

• Main water shutoff
• Kitchen sink shutoff valves
• Bathroom sink shutoff valves
• Toilet shutoff valves
• Washing machine shutoffs
• Dishwasher supply valve
• Exterior faucet shutoffs
• Water heater shutoff

Consider labeling each valve so that every household member can identify it quickly.

Do Not Force a Stuck Valve

Older shutoff valves may become stiff or corroded over time.

If a valve is difficult to turn, avoid forcing it. A damaged shutoff valve can create a much larger plumbing problem than the one you are trying to prevent.

If necessary, have the valve inspected or replaced by a qualified plumber.

First Week Red Flags That Need Prompt Attention

Some issues should not wait for routine maintenance. They may indicate a more serious plumbing, drainage, or moisture problem. 

Create a Drain Maintenance Record

Keep a simple record of what you find during your first-week inspection. Include:

• The location of every shutoff
• The water-meter location
• The sewer cleanout location
• The sump pump’s model and age
• Any drain problems you find
• Repairs that have been completed
• Your plumber’s contact information
• Photos of under-sink connections
• Product manuals
• Dates when strainers and traps were cleaned

This record creates a useful baseline for future maintenance and makes it easier to track recurring problems.

Final Thoughts

Your first week in a new home is the best time to identify plumbing issues before they become costly repairs. Regular inspections and simple preventive habits can help keep your drains working properly from the start.

Using a preventive solution like Drain Buddy Sink Ultra Flo helps stop food, hair, and other debris from entering compatible sink drains. This makes routine maintenance easier and helps reduce the risk of future clogs.

Frequently Asked Questions

1. What drains should I check when moving into a new home?

Start with the fixtures used every day, including kitchen sinks, bathroom sinks, showers, tubs, toilets, and laundry drains. You should also inspect basement floor drains, the sump pump, gutters, downspouts, and exterior drainage.

2. How can I tell whether a sink drain is partially clogged?

Run the faucet at a normal flow for 60 to 90 seconds and watch whether water begins collecting in the basin. You can also fill the sink partway and release the stopper to observe how quickly it empties.

3. How do I test a toilet for a silent leak?

Add several drops of food coloring or a leak detection tablet to the toilet tank. Wait about 10 to 15 minutes without flushing. If colored water appears in the bowl, water is leaking from the tank. A worn flapper or another internal component may need adjustment or replacement.

4. Should I use baking soda and vinegar in every slow drain?

No. A slow drain may be caused by hair, food debris, a dirty P-trap, or a deeper plumbing issue. Baking soda and vinegar will not address every cause. Start by inspecting and removing visible debris. If the problem continues or affects multiple drains, consider professional evaluation rather than repeatedly applying home remedies.

5. How far should a downspout drain from the foundation?

A downspout should release water far enough away that it does not collect beside the foundation. Extensions of several feet are commonly used to direct water toward a safe drainage area.

6. Does Drain Buddy work in kitchen sinks?

Drain Buddy Sink Ultra Flo is designed for compatible kitchen and bathroom sink drains. It works as both a stopper and a strainer that catches food, hair, and other debris. Always confirm compatibility and follow the installation instructions for the specific sink and product model.

7. When should a new homeowner call a plumber?

Call a plumber if sewage backs up, several drains are slow, water appears around a toilet base, or leaks cannot be located safely. Persistent sewer odors and recurring clogs also deserve professional attention.