Glossary of Water and Wastewater Terms

A B C D E F G H I J K L M N O P Q R S T U V W Y Z Symbols and Numbers

5 random terms from our glossary

Fire Point

The lowest temperature of a liquid at which a mixture of air and vapor from the liquid will continue to burn.

Microbial Growth (my-KRO-bee-ul)

The activity and growth of microorganisms, such as bacteria, algae, diatoms, plankton, and fungi.

Acute Health Effect

An adverse effect on a human or animal body, with symptoms developing rapidly.


A durable, metal plate found on equipment that lists critical installation and operating conditions for the equipment.

Evapotranspiration (ee-VAP-o-TRANS-purr-A-shun)

  1. The process by which water vapor is released to the atmosphere by living plants. This process is similar to people sweating. Also called transpiration.
  2. The total water removed from an area by transpiration (plants) and by evaporation from soil, snow, and water surfaces.