When you're shopping for a water pump—whether it’s for a residential well, an irrigation system, or a fountain—the specifications can get confusing quickly. You might see a label that says "7 GPM submersible water pump" and wonder: Okay, it moves 7 gallons per minute, but how far (or high) can it actually move that water?
You turn on the tap, expecting a steady stream of water, but instead, you are met with aggressive sputtering, coughing noises, and an uneven flow. In severe cases, the water might stop flowing altogether. This is the classic sign of air entering your pumping system.