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How Can We Determine How Much Water Was Lost?
Author(s) -
Angers Jim
Publication year - 2001
Publication title -
opflow
Language(s) - English
Resource type - Journals
eISSN - 1551-8701
pISSN - 0149-8029
DOI - 10.1002/j.1551-8701.2001.tb01606.x
Subject(s) - factoring , flow (mathematics) , operations management , environmental science , business , mathematics , engineering , finance , geometry
This month's question concerns unaccounted‐for water (UFW); specifically, the acceptable percentage for a well‐managed system and a formula for calculating the amount of water lost. The article states that there is no real “standard” percentage for (UFW) but most well‐managed systems consider 10 to 15 percent acceptable. Greeley's Formula is discussed for calculating UFW, which provides an estimated loss by factoring in area, pressure, flow, and time. This formula is specific for flow through short, broken pipes and taps. Sources for more information are given.