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.