water purification, process by which undesired chemical compounds, organic and inorganic materials, and biological contaminants are removed from water
. ... The purification procedure reduces the concentration of contaminants such as suspended particles, parasites, bacteria, algae, viruses, and fungi.
Water purification means the process of removing undesirable chemicals, biological contaminants
, suspended solids, and gases from water. The goal is to produce water that is fit for specific purposes.