The coliform density may, however, be helpful in selecting a remedial option.
Microsoft Windows NT 6.1.7601 Service Pack 1
1
Standard Methods for the Examination of Water and Wastewater, 20th edition (1998). Available from American Public Health Association, 800 I Street, NW., Washington, DC 20001-3710.
Microsoft Windows NT 6.1.7601 Service Pack 1
2
Standard Methods for the Examination of Water and Wastewater
, 21st edition (2005). Available from American Public Health Association, 800 I Street, NW., Washington, DC 20001-3710.
Microsoft Windows NT 6.1.7601 Service Pack 1
3
Standard Methods for the Examination of Water and Wastewater,
22nd edition (2012). Available from American Public Health Association, 800 I Street NW., Washington, DC 20001-3710.
Microsoft Windows NT 6.1.7601 Service Pack 1
4
Standard Methods Online are available at
http://www.standardmethods.org
. The year in which each method was approved by the Standard Methods Committee is designated by the last two digits in the method number. The methods listed are the only online versions that may be used.
Microsoft Windows NT 6.1.7601 Service Pack 1
5
Lactose broth, as commercially available, may be used in lieu of lauryl tryptose broth, if the system conducts at least 25 parallel tests between lactose broth and lauryl tryptose broth using the water normally tested, and if the findings from this comparison demonstrate that the false-positive rate and false-negative rate for total coliforms, using lactose broth, is less than 10 percent.
Microsoft Windows NT 6.1.7601 Service Pack 1
6
A multiple tube enumerative format, as described in
Standard Methods for the Examination of Water and Wastewater
9221, is approved for this method for use in presence-absence determination under this regulation.
Microsoft Windows NT 6.1.7601 Service Pack 1
7
EPA Method 1604, EPA 821-R-02-024—"EPA Method 1604: Total Coliforms and
Escherichia coli
in Water by Membrane Filtration Using a Simultaneous Detection Technique (MI Medium)," September 2002,
http://www.epa.gov/nerlcwww/1604sp02.pdf
.
Microsoft Windows NT 6.1.7601 Service Pack 1
8
Multiple-tube and multi-well enumerative formats for this method are approved for use in presence-absence determination under this regulation.
Microsoft Windows NT 6.1.7601 Service Pack 1
9
Colisure
®
results may be read after an incubation time of 24 hours.
Microsoft Windows NT 6.1.7601 Service Pack 1
10
E*Colite
®
—"Charm E*Colite
TM
Presence/Absence Test for Detection and Identification of Coliform Bacteria and
Escherichia coli
in Drinking Water," January 9, 1998.
Microsoft Windows NT 6.1.7601 Service Pack 1
11
Readycult
®
—"Readycult
®
Coliforms 100 Presence/Absence Test for Detection and Identification of Coliform Bacteria and
Escherichia coli
in Finished Waters," January 2007, Version 1.1. Available from EMD Millipore (division of Merck KGaA, Darmstadt, Germany), 290 Concord Road, Billerica, MA 01821.
Microsoft Windows NT 6.1.7601 Service Pack 1
12
modified Colitag
®
, ATP D05-0035—"
Modified Colitag
TM
Test Method for the Simultaneous Detection of
E. coli
and other Total Coliforms in Water," August 28, 2009. Available at
http://www.nemi.gov
or from CPI, International, 580 Skylane Boulevard, Santa Rosa, CA 95403.
Microsoft Windows NT 6.1.7601 Service Pack 1