Glossary of Water and Wastewater Terms

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5 random terms from our glossary

safe yield

The annual quantity of water that can be taken from a source of supply over a period of years without depleting the source permanently (beyond its ability to be replenished naturally in wet years).

coupling

  1. A threaded sleeve used to connect two pipes.
  2. A device used to connect two adjacent parts, such as a pipe coupling, hose coupling, or drive coupling.

combined wastewater

A mixture of stormwater or surface water runoff and other wastewater, such as domestic or industrial wastewater.

centrifugal pump (sen-TRIF-uh-gull)

A pump consisting of an impeller fixed on a rotating shaft that is enclosed in a casing, and having an inlet and discharge connection. As the rotating impeller whirls the liquid around, centrifugal force builds up enough pressure to force the water through the discharge outlet.

Turbidity Meter (ter-BID-it-tee)

An instrument for measuring and comparing the turbidity of liquids by passing light through them and determining how much light is reflected by the particles in the liquid. The normal measuring range is 0 to 100 and is expressed as nephelometric turbidity units (NTUs). Also called a turbidimeter.