fix leaking toilet

If you are aware of how to detect the problem, fixing a leaking or running toilet is possible for a homeowner. 

In this guide, you’ll learn some simple and easy solutions to fix a leaking toilet in your home. Reminder: it is still best to have a professional plumber inspect the leaks and repair your toilet issues, especially if you aren’t well-versed in doing plumbing works.

Keep reading!

Do You Know How to Fix Leaking Toilet Parts?

Refill Tube

After flushing, the tube refills the bowl with water. Verify that the tube’s end is not below the water level in the tank if the toilet runs intermittently.

Ball Cock

After flushing, an on-off valve controlled by a float ball fills the bowl and tank. If the toilet runs on and off, the ball cock may be broken and has to get replaced.

Overflow Tube

Ensures that the tank does not overflow. If tank water is frequently draining into the fill tube, lower the float cup on the fill-valve assembly or bend the float arm ball down substantially. 

You may also need to install the new fill valve if the tank stops filling and the overflow tube or overflow pipe is the main issue.

Float Cup

When it is time to replace an outdated ball-cock flush part, home shops carry plastic replacements that are simple to install. Float-cup components are simple to install and adjust for minor maintenance.

Float Ball

When the water level in the filling tank gets to the correct waterline level after the toilet flushes, the ball cock (under the tank lid)  gets turned off.


The chain opens the flapper at the start of the flush. If the toilet runs constantly, make sure the chain is not too long or short, as this prevents the flapper from closing. The chain connects to the flush lever.


The flapper fixture lifts to allow water from the tank to flow into the toilet bowl. Scrub mineral deposits off of the toilet (or the flush valve seat beneath it) to strengthen the seal. Change it if the flapper is not sealing properly (shut off the water supply valve first). 

If you are changing the flapper, remember to flush the toilet first to drain out the excess water supply line before you try to create a watertight seal once again.


The link between the toilet tank and the bowl gets sealed.

Wax Ring

This part seals the connection between the toilet’s bottom and the drain. Get a new wax ring if water seeps from the bowl’s base.

Closet Bolt

The bolt holds the bowl in place against the flange. Tighten the nuts on the bolts if the toilet starts to rock. Fasten a maximum of a quarter-turn beyond finger-tight to prevent cracking the bowl.

Closet Flange

The closet flange connects the toilet to the drain pipe and anchors it to the floor.

Related: How Much Does A Toilet Installation Cost?

Sounds Complicated?

fix leaking toilet

It is possible to fix a leaking toilet at home, provided you have plumbing skills. However, we’d like to reiterate that this is not simple DIY work for everyone. 

If your plumbing system is having problems, additional work may be necessary. Although you may believe you have saved money on labor, it could end up costing you more to fix the problem later.

Sometimes, leakage could be caused by other leaks in the water system. It is a good idea to hire a professional plumber to inspect your pipes and fix any leaks.

Call Stellar Plumbing to fix your leaking toilet and other plumbing issues. Our professional plumbers are available 24/7 to provide the finest plumbing service in town. Your satisfaction is our guarantee! 
You can count on us at any time of the day as our team of plumbing professionals are ready to serve you 24/7!