Glossary of Water and Wastewater Terms

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5 random terms from our glossary

alkalinity (al-kuh-lin-it-tee)

The capacity of water or wastewater to neutralize acids. This capacity is caused by the water's content of carbonate, bicarbonate, hydroxide, and occasionally borate, silicate, and phosphate. Alkalinity is expressed in milligrams per liter of equivalent calcium carbonate. Alkalinity is not the same as pH because water does not have to be strongly basic (high pH) to have a high alkalinity. Alkalinity is a measure of how much acid must be added to a liquid to lower the pH to 4.5.

dry pit

See dry well.

elevation

The height to which something is elevated, such as the height above sea level.

audit, water

A thorough examination of the accuracy of water agency records or accounts (volumes of water) and system control equipment. Water managers can use audits to determine their water distribution system efficiency. The overall goal is to identify and verify water and revenue losses in a water system.

hairline crack

A stress crack in a pipe; the crack looks like a piece of hair.