Once we do the water well drilling and the well is established, the well pump and pressure tank system need to be designed to give you optimum use for your needs. Proper sizing is crucial to the construction and performance of your well system. Your water well system is designed to suit the needs of your entire household. Factors considered when sizing your system include such things as the number of bathrooms, bedrooms, occupants, and anticipated water use for extras such as swimming pools, spas or whirlpool baths, garden hydrants, or number of animals in a barn. In other words, total fixture units will determine the anticipated water demand.