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Why Is Water Leaking From the Base of the Toilet?

Among other reasons, the base of your toilet may be leaking if the bolts connecting the bottom of your toilet to the floor are loose, the wax ring is faulty, or if there’s water condensation on your toilet dripping onto the floor.

Why Is My Toilet Leaking At The Base?

A leaking toilet base isn’t likely the home spa you dreamed of. You’ll want to repair the leak before the water damage slips out of your control and you find yourself with warping and rotting floors. If you notice puddles around the base of your toilet, there's some possible culprits you can investigate.

Potential issues

  • water around the base of toilet

Your humble toilet is made up of a system of parts and mechanisms that carefully control the flow of water. The water line brings fresh, clean tap water into the tank where the ballcock and water valve keep it inside the tank until you flush. Once you press the lever, the valve opens to release water into the bowl as the dirty water is flushed away. There are many parts in this system that can spring a leak and cause water to pool around the base of your toilet. To fix the issue, you first have to put on your detective hat and figure out which part is causing the problem.

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  • water around the base of toilet

Inside your toilet tank are two or three bolts that hold the tank to the bowl. Between each bolt is a rubber washer or gasket that helps to prevent water from leaking out of the hole in the bottom of the tank where the bolt connects through. However, if the washers get compressed or warped, water can get under the screw head and begin to leak.

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  • water around the base of toilet

Inside your toilet tank, there's a gasket on top of the flush valve that holds the water in the tank and there's another gasket on bottom of the flush valve that seals the tank to the bowl. When the toilet is flushed, the flush valve opens and water rushes through the flush valve and the gaskets, then into the toilet bowl. If the gasket wears down and starts to leak, you'll notice water droplets only after flushing because that's the only time water comes in contact with the sealing gasket between the tank and the bowl.

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  • water around the base of toilet

The ballcock, also known as a flush or fill valve, controls the water level in the toilet tank. When you flush, the water level goes down and the valve then opens to refill the tank. When the water reaches the high point or water level setting, the valve shuts. There are a number of different parts of the valve that could be causing it to splash water onto the tank lid when you flush the toilet, however, as the replacements come as one piece, it's best to replace the entire valve.

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  • water around the base of toilet

The toilet bowl bolts to a toilet flange on the floor under the bowl. A ring of wax seals the connection between flange and bowl, making sure that it's water-tight and secure. If the wax ring begins to weaken, water can start to leak out onto the floor around the base of your toilet each time you flush.

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