water desalination services; water treatment and purification services used to separate and remove contaminants from water; water treatment services provided to others, namely, desalinating water and purifying water employing a humidification and de-humidification process, or an evaporation and condensation process; wastewater treatment services used to extract freshwater from wastewater, reduce wastewater volume, and produce solids from wastewater; wastewater treatment services provided to o...