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EF/ ICR Logo Source Water (Untreated) Levels of Total Coliform for
Ann Arbor Water Treatment Plant


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 Ann Arbor Water Plant

Water Type Month Total Coliform Level (Total Coliforms/100mL)
Surface Water JUL 1997 10
Surface Water AUG 1997 20
Surface Water SEP 1997 300
Surface Water OCT 1997 100
Surface Water NOV 1997 132
Surface Water DEC 1997 120
Surface Water JAN 1998 150
Mixed FEB 1998 20
Surface Water MAR 1998 1733
Surface Water APR 1998 80
Surface Water MAY 1998 100
Surface Water JUN 1998 55
Surface Water JUL 1998 175
Surface Water AUG 1998 20
Surface Water SEP 1998 40
Surface Water OCT 1998 20
Surface Water NOV 1998 183
Surface Water DEC 1998 20


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
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Dec 1997 view report view report
Jan 1998 view report view report
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