Standard Test Method for Isolation and Enumeration of Escherichia coli in Water by the Two-Step Membrane Filter Procedure

Importancia y uso:

5.1 This test method is useful for measuring recreational water quality and chlorinated wastewaters, although it can be used for any water suspected of contamination by fecal wastes of warm-blooded animals. The significance of finding E. coli in recreational water samples, especially samples obtained from fresh recreational waters, is that there is a risk of gastrointestinal illness, directly related to the E. coli density, associated with swimming.5

5.2 Since small or large volumes of water or dilutions thereof can be analyzed by the MF technique, a wider range of levels of E. coli in water can be detected and enumerated than with other methods.

Subcomité:

D19.24

Referida por:

D5465-16R20, D8506-23

Volúmen:

11.02

Número ICS:

07.100.20 (Microbiology of water)

Palabras clave:

ambient waters; Escherichia coli; fecal pollution; mTEC agar; recreational waters; two-step membrane filter method; wastewaters;