Glossary of Water and Wastewater Terms

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5 random terms from our glossary

proofing tool

A device pulled or pushed through a pipe to ensure that cleaning has been effective and that grease or root intrusions do not remain. Also see mandrel.

organic waste

Waste material that may come from animal or plant sources. Natural organic wastes generally can be consumed by bacteria and other small organisms. Manufactured or synthetic organic wastes from metal finishing, chemical manufacturing, and petroleum industries may not normally be consumed by bacteria and other organisms. Also see inorganic waste and volatile solids.

manhole flow

  1. The depth or amount of wastewater flow in a manhole as observed at any selected time.
  2. The total or the average flow through a manhole in any selected time interval.

volumetric feeder

A dry chemical feeder that delivers a measured volume of chemical during a specific time period.

exfiltration (EX-fill-TRAY-shun)

Water wastes and water-carried wastes that unintentionally leak out of defects in a sewer pipe wall and into the environment. Similar to, but the opposite of, infiltration.