A treadle pump is a human-powered suction pump that sits on top of a well and is used for irrigation. Treadle pumps have primarily been developed for pumping water for irrigation, and can be used to a depth of seven metres or less. Other uses include pumping potable water for domestic and livestock consumption. Treadle pumps free farmers from dependence on rain-fed irrigation and helps farmers maximize return on their small plots of land. The treadle pump can do most of the work of a motorized pump, but costs considerably less.