Table I E. coli Analytical Methods
Organism | Methodology | Method | SM 20th Edition1 | SM 21st Edition2 | SM 22nd Edition3 | SM Online4 | Other |
E. coli | Enzyme Substrate Methods | Colilert | 9223 B5 | 9223 B 5 | 9223 B | 9223 B-97 5,6 | |
Colilert-18 | 9223 B | 9223 B | 9223 B | 9223 B-97 | |||
ONPG-MUG Test | 9223 B | 9223 B | 9223 B | 9223 B-97 | |||
Escherichia coli Procedure (following Lactose Fermentation Methods) | EC-MUG medium | 9221 F, 9221 F.1 | 9221 F.1 | 9221 F.1 | |||
NA-MUG7 | 9222 G | ||||||
Enterococci | Multiple-Tube Technique | 9230B | 9230 B-04 | ||||
Membrane Filter Technique | 9230C | EPA Method 16008 | |||||
Enterolert9 | |||||||
Coliphage | Two-Step Enrichment Presence-Absence Procedure | Fast Phage 10 EPA Method 1601.11 | |||||
Single Agar Layer Procedure | EPA Method 1602.12 |
1Standard 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.
2Standard 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.
3Standard 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.
4Standard 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.
5 Multiple-tube and multi-well enumerative formats for this method are approved for use in presence-absence determination under this regulation.
6 Colisure® results may be read after an incubation time of 24 hours.
7 EC-MUG (Method 9221F) or NA-MUG (Method 9222G) can be used for E. coli testing step as described in § 141.21(f)(6)(i) or (ii) after use of Standard Methods 9221 B, 9221 D, 9222 B, or 9222 C.
8 EPA Method 1600: Enterococci in Water by Membrane Filtration Using membrane-Enterococcus Indoxyl--D-Glucoside Agar (mEI) EPA 821-R-02-022 (September 2002) is an approved variation of Standard Method 9230C. The method is available at http://www.epa.gov/nerlcwww/1600sp02.pdf or from EPA's Water Resource Center (RC-4100T), 1200 Pennsylvania Avenue, NW., Washington, DC 20460. The holding time and temperature for ground water samples are specified in footnote 1 above, rather than as specified in Section 8 of EPA Method 1600.
9 Medium is available through IDEXX Laboratories, Inc., One IDEXX Drive, Westbrook, Maine 04092. Preparation and use of the medium is set forth in the article "Evaluation of Enterolert for Enumeration of Enterococci in Recreational Waters," by Budnick, G.E., Howard, R.T., and Mayo, D.R., 1996, Applied and Environmental Microbiology, 62:3881-3884.
10 Charm Sciences Inc. "Fast Phage Test Procedure. Presence/Absence for Coliphage in Ground Water with Same Day Positive Prediction". Version 009. November 2012. 659 Andover Street, Lawrence, MA 01843. Available at www.charmsciences.com.
11 EPA Method 1601: Male-specific (F+) and Somatic Coliphage in Water by Two-step Enrichment Procedure; April 2001, EPA 821-R-01-030. Method is available at http://www.epa.gov/nerlcwww/1601ap01.pdf or from EPA's Water Resource Center (RC-4100T), 1200 Pennsylvania Avenue, NW., Washington, DC 20460.
12 EPA Method 1602: Male-specific (F+) and Somatic Coliphage in Water by Single Agar Layer (SAL) Procedure; April 2001, EPA 821-R-01-029. Method is available at http://www.epa.gov/nerlcwww/1602ap01.pdf or from EPA's Water Resource Center (RC-4100T), 1200 Pennsylvania Avenue, NW., Washington, DC 20460.
Wis. Admin. Code Department of Natural Resources NR 809.334