Jump to main content.


EF/ ICR Logo Source Water (Untreated) Levels of E. coli for
City of Wilmington Delaware


Water System E. coli 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 E. coli for Porter Filter Plant

Water Type Month E. coli Level (E.coli/100mL)
Surface Water JUL 1997 11
Surface Water AUG 1997 40
Surface Water SEP 1997 70
Surface Water OCT 1997 54
Surface Water NOV 1997 38
Surface Water DEC 1997 19
Surface Water JAN 1998 25
Surface Water FEB 1998 20
Surface Water MAR 1998 9
Surface Water APR 1998 26
Surface Water MAY 1998 86
Surface Water JUN 1998 20
Surface Water JUL 1998 4
Surface Water AUG 1998 79
Surface Water SEP 1998 53
Surface Water OCT 1998 45
Surface Water NOV 1998 20
Surface Water DEC 1998 16


Source Water (Untreated) Levels of E. coli for Brandywine Filter Plant

Water Type Month E. coli Level (E.coli/100mL)
Surface Water JUL 1997 16
Surface Water AUG 1997 12
Surface Water SEP 1997 12
Surface Water OCT 1997 21
Surface Water NOV 1997 23
Surface Water DEC 1997 17
Surface Water JAN 1998 8
Surface Water FEB 1998 123
Surface Water MAR 1998 9
Surface Water APR 1998 60
Surface Water MAY 1998 548
Surface Water JUN 1998 17
Surface Water JUL 1998 46
Surface Water AUG 1998 88
Surface Water SEP 1998 23
Surface Water OCT 1998 25
Surface Water NOV 1998 16
Surface Water DEC 1998 80


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

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
Feb 1998 view report view report
Mar 1998 view report view report
Apr 1998 view report view report
May 1998 view report view report
Jun 1998 view report view report
Jul 1998 view report view report
Aug 1998 view report view report
Sep 1998 view report view report
Oct 1998 view report view report
Nov 1998 view report view report
Dec 1998 view report view report


ICR Overview
Envirofacts Home Page


Local Navigation


Jump to main content.