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a reservoir or storage tank mounted on a tower-like structure at the summit of an area of high ground in a place where the water pressure would otherwise be inadequate for distribution at a uniform pressure
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005
An elevated structure located above the roof of a building to create sufficient pressure to supply the fixtures within the building. Also, can be freestanding and serving entire communities.
Illustrated Dictionary of Architecture Copyright © 2012, 2002, 1998 by The McGraw-Hill Companies, Inc. All rights reserved
water tower[′wȯd·ər ‚tau̇·ər]
A tower or standpipe for storing water in areas where ordinary water pressure is inadequate for distribution to consumers.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
A tower into which water is pumped to raise its level high enough above the level of a water distribution system so that the system will be supplied with adequate water pressure.
McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.