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EF/ ICR Logo Source Water (Untreated) Levels of Total Coliform for
Regional Water Authority


Water System Total Coliform Report
REMINDER: Data Purpose: The ICR data were collected as part of a national research project to support development of national drinking water standards. The should NOT be used to determine local water systems compliance with drinking water standards, nor should they be used to make personal judgements about health risks.


Source Water (Untreated) Levels of Total Coliform for Lake Gaillard Water Treatment Plant

Water Type Month Total Coliform Level (Total Coliforms/100mL)
Surface Water JUL 1997 10
Surface Water AUG 1997 14
Surface Water SEP 1997 22
Surface Water OCT 1997 16
Surface Water NOV 1997 26
Surface Water DEC 1997 21
Surface Water JAN 1998 14
Surface Water FEB 1998 14
Surface Water MAR 1998 12
Surface Water APR 1998 16
Surface Water MAY 1998 58
Surface Water JUN 1998 6
Surface Water JUL 1998 40
Surface Water AUG 1998 365
Surface Water SEP 1998 61
Surface Water OCT 1998 275
Surface Water NOV 1998 44
Surface Water DEC 1998 11


Source Water (Untreated) Levels of Total Coliform for Lake Saltonsta ll Water Treatment Plant

Water Type Month Total Coliform Level (Total Coliforms/100mL)
Surface Water JUL 1997 201
Surface Water AUG 1997 111
Surface Water SEP 1997 2419
Surface Water OCT 1997 0
Surface Water NOV 1997 6
Surface Water DEC 1997 38
Surface Water JAN 1998 80
Surface Water FEB 1998 24
Surface Water MAR 1998 42
Surface Water APR 1998 26
Surface Water MAY 1998 108
Surface Water JUN 1998 62
Surface Water JUL 1998 32550
Surface Water AUG 1998 308
Surface Water SEP 1998 488
Surface Water OCT 1998 325
Surface Water NOV 1998 15
Surface Water DEC 1998 21


Source Water (Untreated) Levels of Total Coliform for West River Water Treatment Plant

Water Type Month Total Coliform Level (Total Coliforms/100mL)
Surface Water JUL 1997 2419
Surface Water AUG 1997 2419
Surface Water SEP 1997 1299
Surface Water OCT 1997 37
Surface Water NOV 1997 345
Surface Water DEC 1997 44
Surface Water JAN 1998 142
Surface Water FEB 1998 0
Surface Water MAR 1998 613
Surface Water APR 1998 172
Surface Water MAY 1998 36
Surface Water JUN 1998 140
Surface Water JUL 1998 649
Surface Water AUG 1998 461
Surface Water SEP 1998 225
Surface Water OCT 1998 61
Surface Water NOV 1998 29
Surface Water DEC 1998 24


How does this utility's source water compare to source waters nationally for coliform? Click on "view report" to see the state and national levels of total coliform.

Month State Report National Report
July 1997 view report view report
Aug 1997 view report view report
Sep 1997 view report view report
Oct 1997 view report view report
Nov 1997 view report view report
Dec 1997 view report view report
Jan 1998 view report view report
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