Approved CWA Microbiological Methods for Ambient Water
Methods approved under Clean Water Act Section 304(h) and published at 40 CFR Part 136.
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Method 1623.1: Cryptosporidium and Giardia in Water by Filtration/IMS/FA (pdf)
This document describes the method used to support the assessment of Cryptosporidium and Giardia occurrence in raw surface waters used as source waters for drinking water treatment plants, which is required to support future regulation of protozoa in drinking water under the Safe Drinking Water Act Amendments of 1996. - 1103.1: Escherichia coli (E. coli) in Water by Membrane Filtration Using membrane-Thermotolerant Escherichia coli Agar (mTEC) (pdf)
- 1106.1: Enterococci in Water by Membrane Filtration Using membrane-Enterococcus-Esculin Iron Agar (mE-EIA) (pdf)
- 1600: Enterococci in Water by Membrane Filtration Using membrane-Enterococcus Indoxyl-β-D-Glucoside Agar (mEI) (pdf)
- 1603: Escherichia coli (E. coli) in Water by Membrane Filtration Using Modified membrane-Thermotolerant Escherichia coli Agar (Modified mTEC) (pdf)
- 1604: Total Coliforms and Escherichia coli in Water by Membrane Filtration Using a Simultaneous Detection Technique (MI Medium) (pdf)
- 1622: Cryptosporidium in Water by Filtration/IMS/FA (pdf)
- 1623: Cryptosporidium and Giardia in Water by Filtration/IMS/FA (pdf)