Glossary of Water and Wastewater Terms

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5 random terms from our glossary

Specific Capacity Test

A testing method used to determine the adequacy of an aquifer or well by measuring the specific capacity.

Altitude Valve

A valve that automatically shuts off the flow into an elevated tank when the water level in the tank reaches a predetermined level. The valve automatically opens when the pressure in the distribution system drops below the pressure in the tank.

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.

Tap

A small hole in a sewer where a wastewater service line from a building is connected (tapped) into a lateral or branch sewer.

Manhole Bedding

The prepared and compacted base on which a manhole is constructed.