Water Source
If your Whirlpool refrigerator is dispensing water at low pressure, the first thing you need to check is the home's water pressure, which varies throughout the day. For example, if water is being used in several places at once, such as the shower, dishwasher, washing machine or sprinkler system, the water pressure will be low due to the increased demand.
Water Valves
If the water pressure in your Whirlpool refrigerator has been consistently low, check the local shutoff or saddle valve. This is typically found either in the wall where the refrigerator's cold water line connects to the water pipe or under the sink. If the valve is turned halfway, the water pressure will be lower than it should be. Ensure it is turned all the way to the "On" position.
Water Hose
Check the cold water hose that connects to the shutoff or saddle valve of your Whirlpool refrigerator for kinks, leaks and blockages. If the hose is kinked or leaking, the water pressure will be lower than it should be. Straighten out the kink to allow water to run freely. If the hose is leaking or blocked, turn off the shutoff or saddle valve, disconnect the hose and remove the blockage or patch the leak. Consider replacing the hose if the leak or blockage is large.
Filter
Many Whirlpool refrigerators are equipped with a water filter for the drinking dispenser in the door. These filters can clog over time and cause the water pressure to drop significantly. Replacing the filter will solve this problem. Because Whirlpool refrigerator models have different filters and locations, consult your owner's manual for the type of filter your Whirlpool refrigerator model uses and the instructions for replacing it.