Glossary Terms

The ratio of output per unit input or the effectiveness of performance of a system; in an ion exchange system, often expressed as the amount of […]

A measure of the diameter of particles in a media bed or resin bed. Effective size is that mesh size which will permit 10 percent of […]

A device utilizing a nozzle and throat, installed in a stream of water to create a partial vacuum to draw air or liquid into the stream; […]

The common abbreviation of Escherichia Coli.

A shallow, large diameter well constructed by excavating with power machinery or hand tools instead of drilling or driving. Typically a dug well is constructed for […]

A shallow, usually small well (having a diameter of 1.5 inches to 3 inches or 4 to 10 cm) constructed without the aid of any drilling, […]

A tube or pipe from a water conditioning unit that carries backwash water, regeneration wastes and/or rinse water to a drain or waste system.

A pipe or conduit in a building plumbing system which carries liquids to waste by gravity; sometimes the term is limited to liquids other than sewage.

A term designating the direction (down) in which water or a regenerant flows through an ion exchanger or filter during any phase of the operating cycle.