Glossary of Water and Wastewater Terms

A B C D E F G H I J K L M N O P Q R S T U V W Y Z Symbols and Numbers

5 random terms from our glossary

Significant Industrial User (SIU)

A significant industrial user includes all categorical industrial users, and any noncategorical industrial user that (1) discharges 25,000 gallons per day or more of process wastewater (process wastewater excludes sanitary, noncontact cooling and boiler blowdown wastewaters); (2) contributes a process wastestream that makes up five percent or more of the average dry weather hydraulic or organic (BOD, TSS) capacity of a treatment plant; or (3) has a reasonable potential, in the opinion of the control or approval authority, to adversely affect the POTW treatment plant (inhibition, pass-through of pollutants, sludge contamination, or endangerment of POTW workers).

Well Point

A hollow, pointed rod with a perforated (containing many small holes) tip. A well point is driven into an excavation where water seeps into the tip and is pumped out of the area. Used to lower the water table and reduce flooding during an excavation.

Chlorine Residual Analyzer

An instrument used to measure chlorine residual in water or wastewater. This instrument also can be used to control the chlorine dose rate.

Television Inspection Log

A record of a pipeline television inspection that provides date, line location, footage distances, pipe quadrant locations, and descriptions of all conditions observed in the inspection. When this log is written, it is called a written recording. When it is voice recorded on a tape, it is called a voice tape recording. If the picture is recorded with a videotape recorder with audio remarks, it is called a video-voice inspection record. Where data-view reporting is used, it is called a VIDEO LOG.

Wasteline Trap

See TRAP.