Ammonia is a colorless, pungent gaseous compound, extremely soluble in water. It is a biologically active compound found in most waters as...

Biochemical Oxygen Demand (BOD) is a measurement of the amount of dissolved oxygen (DO) that is used by aerobic microorganisms when decomposing...

Chemical Oxygen Demand (COD) is a measurement of the oxygen required to oxidize soluble and particulate organic matter in water. It is...

Chlorides are salts resulting from the combination of the gas chlorine with a metal. Chlorine alone as Cl 2 is highly toxic...

The presence of dissolved natural organic material, usually from aquatic humic matter, causes water to have color. Certain industries rely to the...

Cyanide is a carbon-nitrogen chemical unit which combines with many organic and inorganic compounds. It is an extremely toxic substance that is...