Physical Examinations: Color, odor, turbidity, and electrical conductivity, total dissolved solids and suspended solids. Chemical Examinations: PH, alkalinity, hardness, calcium, magnesium, sodium, potassium, iron, manganese, ammonia, nitrite, nitrate, chloride, fluoride, sulfate, phosphate, silica, BOD, COD, TKN, oil & grease, aluminum, chromium, arsenic, and free chlorine. Bacteriological Examination: Standard plate count, total coli form, fecal coli form, fecal streptococci.