All Water Treatment (Process) Due to its instant availability and quality, groundwater has become a prime source of drinking water around the country. This course is intended for public water system operators who use groundwater as their source of supply. Topics will include typical groundwater hydrology, surface and subsurface features of a typical production well. Ground water treatment options for water quality challenges will be introduced with emphasis on disinfection using chlorine, hypochlorite, UV, ozone, and chlorine dioxide. Regulatory challenges related to the disinfection byproducts rule are also addressed.