Emptying the water reservoir on your Keurig brewer is a bit different than regular coffee makers. The Keurig coffee maker keeps hot water in a tank inside the brewer as well as the water you add to the water reservoir. The water reservoir is the container you fill when adding water to the machine. Emptying the water reservoir on a Keurig coffee maker for storing the unit also includes emptying the hot water tank reservoir.
Turn off the Keurig coffee maker, and unplug the power cord. Allow the unit to cool for 30 minutes before emptying the water. This gives the water inside the hot water tank an opportunity to cool, helping to prevent accidental scalding when emptying.
Pull the lid off the top of the water reservoir. Lift the water reservoir straight up and to the right of the coffee maker. Pour out any remaining water in the reservoir into the sink.
Turn the small thumb screw on the back of the Keurig coffee maker counterclockwise with your fingers, and pull off the rear access panel. If the screw is too tight to turn with your fingers, use a flat-head screwdriver to turn the screw. Once you remove the access panel, a tube with a plug on the end is visible. Pull the tube out of the plastic clip holder.
Place a large pitcher behind the coffee maker. Hold the end of the tube over the pitcher, and pull the plug out of the tube. Allow the water to drain into the pitcher. If necessary, maneuver the coffee maker to the edge of the counter, and hold the pitcher alongside the counter with the top at counter level.
Push the plug back into the end of the tube once no more water drains from the hot water tank. Empty the pitcher of water into the sink, and push the tube back into the plastic clip holder. Position the back access panel onto the coffee maker and secure with the thumb screw knob.