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Unaccounted-For Water |
A term used in municipal
water systems to describe the difference between the water produced and
that metered and sold. It usually includes losses due to leakage, water
used for fire fighting, public sprinkling and other municipal purposes,
and usually ranges from 10 to 35 percent of the water produced. |
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Uniformity
Coefficient |
A measure of the variation
in particle sizes of ion exchange resins and filter media. It is defined
as the ratio of the size of particle which has 60 percent of the material
finer than itself, to the size of the particle which has 10 percent finer
than itself. |
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Upflow |
A term used to indicate the
direction (up) in which water or regenerant flows through an ion exchanger
or filter media bed during any phase of the operating cycle. |
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Usepa |
The abbreviation for
"United States Environmental Protection Agency". |
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Usphs |
The abbreviation for
"United States Public Health Service". |
