No matter what the crop, farms all across the world require water in a constant supply. Most farms are not situated in areas that receive sufficient rainfall to sustain the crops at a commercially viable quality. Irrigation is required. Certainly, the health of our bodies, our farmers, and our economy depend on the irrigation-pipe supplied, clean, healthy water. Since hydrologists are trained to locate underground water sources, as well as to examine the quality of water, their help can be invaluable to the process of instating an irrigation system. Of course, irrigation is not relegated to farms: it is also useful for yards and home and commercial landscaping sites.