Why is My Water Dispenser Overflowing?

An overflowing water dispenser is something that you can’t ignore because you don’t want to waste water or risk damaging your floor. It also exposes you to injuries from slips and falls.

If your water dispenser is overflowing, you need to figure out why to get a solution. Fortunately enough, diagnosing an overflowing water dispenser isn’t too complex.

And if you find it too complicated to handle, you can always seek help from a professional.

So, what can make a water dispenser overflow? It could be clogged spigots, clogged tanks, and improper jug replacement, among others.

In this post, we discuss the causes of an overflow in a water dispenser and how to fix them.

How to Fix an Overflowing Water Dispenser

Your water dispenser could be overflowing because of:

  • A clogged tank
  • Clogged taps
  • Improper water bottle replacement
  • A broken water bottle
  • A molten tap seal

Clogged tank

A clogged tank can compromise the flow of water in your water dispenser. If the unit is overflowing, the tank is most likely clogged with dirt.

And how does a water dispenser get clogged while the water in the unit is supposedly pure? Well, even with all the purification that the water goes through, sediment still builds up.

That’s why you need to clean the unit regularly. It’s the only way to prevent clogging and keep your water safe and healthy to drink.

Clogged taps

Cleaning your water dispenser regularly is one of the best ways of keeping it working as expected. Check the taps if the dispenser is overflowing and you haven’t cleaned it for a while.

A clogged tap can suck water from the tank but won’t release it. This means that water will be drawn from the jug and into the tank, but not enough will be drawn out.

The solution is simple. You just need your cleaning tools and remove the dirt blocking the taps.

Molten tap seal

Your water dispenser taps can control the water flow thanks to the unit seals or rubber parts. And although the seals are designed to last longer, the one in the hot water tap usually requires replacement sooner.

If this happens, the molten rubber can block the hot water tap’s outlet and cause an overflow. To solve this problem, you need to replace the rubber seal as soon as possible.

And how do you go about it?

The first step is to turn the water dispenser off and unplug it. Let it cool down, and remove the jug. Next, get an empty bucket and drain all the water in the tank.

Remove the lever at the top of the hot water tap, locate the rubber seal, remove it and replace it with a new one.

Slightly refill the water tank and flush both taps. Place the jug back in the dispenser and plug the unit back into the outlet.

A broken water bottle

A hairline fracture on your dispenser’s water bottle will cause a leak and an overflowing problem. This is because pressure conditions in the dispenser’s water reservoir are altered when the water bottle gets a fracture.

This prevents the unit from maintaining a steady water level leading to an overflow.

It’s therefore wise to check the water bottle before placing it into the dispenser. Replace it with a new one if it’s damaged.

Improper water bottle replacement

Why is My Water Dispenser Overflowing

Sometimes, an overflowing water dispenser could result from a very small mistake: improper water bottle replacement.

Before placing a new water bottle in your appliance, ensure that the dispenser’s water tank is empty or has just a little water. Increasing water into a nearly-full water tank is a bad idea. It’ll overflow.

To prevent this, always check the water level in the reservoir before a replacement. If it’s nearly full and you still want to put in a new water bottle, get an empty bucket and drain the water until the tank is partially empty.


An overflowing water dispenser is the last thing you want in your kitchen or office. It will not only mess up your space but also lead to wastage of water.

Prevent your water dispenser from overflowing by giving it regular maintenance. And in case of a repair issue that you can’t handle, call an expert to help you fix it.

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