Glossary of Water and Wastewater Terms

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5 random terms from our glossary

Grit Trap

A permanent structure built into a manhole (or other convenient location in a collection system) for the accumulation and easy removal of grit. Also see SAND TRAP.

Rodding Machine

See PIPE RODDING and POWER RODDER.

Consolidated Formation

A geologic material whose particles are stratified (layered), cemented, or firmly packed together (hard rock); usually occurring at a depth below the ground surface. Also see UNCONSOLIDATED FORMATION.

Industrial Wastewater

Liquid wastes originating from industrial processing. Because industries have peculiar liquid waste characteristics requiring special consideration, these sources are usually handled and treated separately before being discharged to a wastewater collection system.

Electrical Logging

A procedure used to search for water-bearing formations (aquifers) by determining the porosity (spaces or voids) of geologic materials. Electrical probes are lowered into wells, an electric current is induced at various depths, and the resistance measured indicates the porosity of the formation.