For both rental property owners and tenants, water efficiency is a top priority. A leaky or worn-out toilet flapper is one of the most common culprits behind high water bills. This small rubber seal, located inside the toilet tank, regulates the water flow from the tank to the bowl. When it wears out, it can cause the toilet to run continuously, wasting hundreds of gallons of water each month. If you’re working with a property management company in Portland, Oregon, knowing how to safely replace a toilet flapper can save both money and resources.
Why Replacing a Flapper Matters
The flapper acts as a gatekeeper inside the toilet tank. When you flush, it lifts to release water into the bowl, then seals tightly afterward to prevent leaks. Over time, flappers can warp, crack, or lose their seal due to constant exposure to water and cleaning chemicals. A faulty flapper doesn’t just waste water—it can also shorten the lifespan of other toilet components.
For property managers, addressing this issue quickly improves tenant satisfaction by ensuring reliable plumbing, reduces water waste, and helps maintain lower utility costs for the property.

Tools and Materials You’ll Need
Fortunately, replacing a flapper doesn’t require advanced plumbing skills. Here’s what you’ll need:
- A new toilet flapper (universal or model-specific)
- Adjustable pliers (optional)
- A sponge or towel for cleanup
- Rubber gloves for safety
Step-by-Step Guide to Replacing a Toilet Flapper
- Turn Off the Water Supply
Locate the shut-off valve behind the toilet and turn it clockwise to stop the water flow. Flush the toilet to drain most of the water from the tank. - Remove the Old Flapper
Open the tank lid and set it aside carefully. Detach the chain from the flush handle lever, then unhook the sides of the flapper from the overflow tube. - Inspect the Flush Valve Seat
Check the surface where the flapper seal is located. If it has mineral buildup or debris, clean it with a sponge. A smooth seat ensures the new flapper seals correctly. - Install the New Flapper
Attach the flapper arms to the overflow tube and reconnect the chain to the flush lever. Ensure the chain has just enough slack to allow full flapper movement; too tight or too loose can cause problems. - Test the Flush
Turn the water supply back on and allow the tank to fill. Flush the toilet to ensure the flapper opens and closes properly. Adjust the chain length if necessary. - Check for Leaks
Wait a few minutes and listen for the sound of running water. If the toilet is quiet and the water level stays steady, the new flapper is working as intended.
Benefits for Property Managers and Tenants
For those managing rentals, including property management companies in Portland, Oregon, this simple repair can make a significant difference. A properly functioning flapper prevents costly water waste, lowers utility bills, ensures tenant comfort by maintaining consistent bathroom functionality, and reduces the risk of more significant plumbing issues in the future. Encouraging tenants to report running toilets promptly and performing regular inspections are great preventive steps.
Contact Us
Take action now: replace faulty toilet flappers to boost efficiency, lower water bills, and maintain your property’s value. Whether you’re a tenant or a property manager, embrace this simple step to ensure lasting benefits for your rental properties.
Let our team save you the time, money and hassle of property management! Contact us today to learn more about the services that we can offer you by calling us at (503) 646-9664 – Talk to a Live Person – Our office answers the phone 9 AM to 5 PM Monday through Friday – or click here to connect with us online.