Why Does My Cuisinart Coffee Maker Leak

A build-up of mineral deposits inside the Cuisinart coffee maker is a common reason for it to start leaking. At times, issues can also arise from one or more of its removable components becoming defective and not functioning properly. These problems can lead to leaks. Wondering why your Cuisinart coffee maker is leaking? We will cover all aspects related to the leakage problem of the Cuisinart coffee maker in the article below.

Cuisinart Coffee maker starts to leak when the coffee maker is malfunctioning or one of the broken parts may need to be replaced. But, it is crucial to establish the source of the leakage. The article will give you the necessary details explaining why the Cuisinart coffee maker is leaking. Also, it will provide the information to fix the Cuisinart coffee maker.

Reasons That Can Cause Leak in Cuisinart Coffee Maker

As we said, there can be several reasons that can cause the leak in the coffee maker. Below, we will let you know about some of the top reasons that can cause the leak in the coffee maker.

The Brew Basket Hasn’t Been Properly Placed

The Cuisinart coffee maker will start to overflow if the brew basket is not at its right place. Considerably, a lot of water tends to leak if it isn’t placed fittingly. Henceforth, when there is a noticeable leaking, check the brew basket first. 

Excessive Amount of Coffee Beans

The company’s manual of Cuisinart coffee maker has explicitly pointed out not to add over 14 scoops of cocoa beans. Filling it up more than it is designed, will eventually lead to leaking. So, it is advised to only use the instructed amount. 

Adding Excessive Quantity of Water

The Uppermost limit of the Cuisinart coffee maker for water is 12 cups. The Manual has pointed out to add water according to the height marking of the carafe. Furthermore, after estimating the desired cups of coffee, fill up the water. Remember to add a bit extra as the water gets evaporated during the steam and lost after prepping the coffee grounds. Other than that, it is sensible to not go beyond the limit. 

Going Over the Instructed Amount of Pre-Ground Coffee

In the guidelines provided by Cuisinart coffee maker, it is recommended to use 1 level scoop of pre-ground coffee for 1 cup. The maximum amount of scoops are 16 scoops. Besides that, adding more pre-ground coffee will result in the overflow of water.  

Detaching Carafe for Longer period

The Cuisinart coffee maker has a pause brew option. In that pause, the carafe can be removed. But it is advised not to do it longer than 20 seconds. Even though the brand has provided a mid pause service, it is not recommended to use. As the Cuisinart coffee maker will start overflowing if it’s not placed in the designated place within 20 seconds. Also, using the mid-pause button can hamper the end-rich flavor of the coffee. 

Damaged Water Hose

When the source of the water leak is from the base, the reason might be the hose. As the water hose of the Cuisinart Coffee maker is designed to withstand high temperatures during the coffee making. The said temperature can rise to 130 degrees. So, after a certain period, the water hose starts malfunctioning. In most cases, the hose becomes dysfunctional due to the overuse of the coffee maker. For this, the water starts overflowing as the hose is connected to the water tank. 

Calcified Build-up

The Cuisinart coffee maker needs a deep clean once in a while. The reason being is the build-up caused by the minerals. If the calcification is too thick, the water will have a backflow resulting in an overflow of water. 

Solutions You Can Try to Fix the Leak

The Cuisinart coffee maker can have a longer life expectancy by proper maintenance. Once in a while, it can generate problems like leaking water. The malfunctioned parts can also stop working. In this scenario, it is better to find the source and repair it accordingly. 

Deep clean The Cuisinart Coffee Maker

The Cuisinart coffee maker will start to flash the clean button indicator due to mineral build-up. As the thickened build-up will cause the backflow of the water, it is better to deep clean when necessary. 

The cleaning solution to clean the build-up is 1:2 of water and vinegar. White vinegar has an acidity level of 9. This will decalcify the minerals in the Cuisinart Coffee maker. Therefore, sanitizing the coffee machine. 

Fix the Damaged Water Hose

Unfortunately, if there is a problem with the water hose, it needs to be replaced. There is no way around it. But, if the water is damaged within the warranty period, you can ask the company for maintenance. Otherwise, call a coffee maker repairman for assistance.  

Fix the Water Reservoir

Providing that the water is poured at its maximum, rearrange your habit of pouring water.  But, if there is a problem with the lid of the water reservoir, then it needs to be replaced. 

Replace the Malfunctioning Brewing Switch 

The other cause of flowing water from the bottom is a dysfunctional brewing switch. Before, informing the maintenance company, check if the cause is the brewing switch. For checking the affectability of the brewing switch, use the Ohm meter. If the result is showing anything other than zero, then there is a problem with the brewing switch. And, It is time to call for maintenance. 

Fix the Dysfunctional Tube Connector

If the water is leaking due to the collapsed tube connector, replacing it would suffice. But, if it is due to a broken tube connector, the whole of the tube connector needs to be replaced for proper function. Also, it is crucial to clean the surface properly. Otherwise, the new parts won’t fit. 


To fix the Cuisinart coffee maker, the basis of the malfunction should be figured out. There are various causes of the overflow as mentioned above. Hence, finding out the source and the parts responsible for the water leaking is necessary. The Cuisinart coffee maker has a warranty of three years. So, if the problems appear in that period, contacting the customer service would be right. In the end, remember to clean the Cuisinart coffee maker after every use. And when it’s time to deep clean, better to not contemplate.