Glossary of Water and Wastewater Terms

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5 random terms from our glossary

Chlorophenoxy (KLOR-o-fuh-NOX-ee)

A class of herbicides that may be found in domestic water supplies and cause adverse health effects. Two widely used chlorophenoxy herbicides are 2,4-D (2,4-Dichlorophenoxy acetic acid) and 2,4,5-TP (2,4,5-Trichlorophenoxy propionic acid [silvex]).

Ester

A compound formed by the reaction between an acid and an alcohol with the elimination of a molecule of water.

Base

  1. A substance that takes up or accepts protons.
  2. A substance that dissociates (separates) in aqueous solution to yield hydroxyl ions (OH).
  3. A substance containing hydroxyl ions that reacts with an acid to form a salt or that may react with metals to form precipitates.

Starters (Motor)

Devices used to start up large motors gradually to avoid severe mechanical shock to a driven machine and to prevent disturbance to the electrical lines (causing dimming and flickering of lights).

Well Log

A record of the thickness and characteristics of the soil, rock, and water-bearing formations encountered during the drilling (sinking) of a well.