The process by which chlorine is added to water during treatment in order to kill harmful microorganisms. One of the most common chemicals used in the treatment of public water supplies because it is highly effective in killing harmful microorganisms. The process by which water vapor collects into clouds of tiny water droplets in the cooler atmosphere. Any substance found in water that may be harmful to water consumers. The introduction of a harmful substance into the water either at the supply or during distribution.
Contamination can occur naturally or by the hands of humans.
The process by which water from the earth's surface is transported into the atmosphere as it turns from liquid to gas. The process by which organic and inorganic particles are removed from the raw water. Any source of water that is found beneath the earth's surface in an aquifer. This is the natural cycle of water, including evaporation, transpiration, condensation, precipitation and percolation. The part of a surface water treatment facility where water from a lake, river or stream is drawn into the plant for filtration, treatment and distribution to customers.