ABSTRACT
Gupta (1997) points out that because of huge volume and flow conditions, the quality of natural water cannot be modified significantly within a body of water. Consequently, the quality control approach is directed to water withdrawn from a source for a specific use; the drawn water is treated prior to use. Typically, the overall treatment of water (for potable use) consists of physical and chemical methods of treatment-unlike wastewater treatment, where physical, chemical, and/or biological unit processes are used, depending on the desired quality of the effluent and operational limitations.
