A Keurig coffee maker draws water from a separate water tank and heats it to make a single cup of coffee. Every time the machine makes a cup of coffee, it draws more water from the tank and stores it within the system to prepare for the next cup. If you plan on storing your Keurig for an extended period of time or if you are moving, it is important to drain the water from the system or the water will stagnate.
Turn off your Keurig coffee maker and unplug it. Wait about half an hour before attempting to drain the water.
Slide the clear plastic water tank from the side of the Keurig.
Pour all of the water out of it, rinse it and set it aside.
Turn the Keurig around so that you are looking at its back panel.
Locate the flathead screw on the back of the machine and unscrew it. This screw secures the back panel to the rest of the machine.
Slip the back panel off of the machine.
Set the Keurig up so that the back of the machine is facing the sink.
Locate the clear plastic pipe and lift it out of its clip.
Aim the plastic pipe toward the sink and remove the end cap from the end of it, allowing the water contained within it to drain from the machine.
Reassemble the machine. Push the end cap back into the pipe and push the pipe back into the clip. Snap the back panel back onto the machine and secure it with the screw you removed earlier. Slide the water tank back onto the side of the machine.