The wellhead is an essential part of the pumping system connected to the top of the borehole casing. It suspends the rising mains to the borehole pump and allows for the safe entry of power cables, probes, and instruments into the borehole. The wellhead also prevents harmful pollutants, such as organic matter, dangerous pathogens, and toxic runoff, from entering the water supply of your well. When the wellhead is correctly installed, it provides a watertight seal that separates potential contaminants from the groundwater.