Frequency‐of‐Occurrence Monitoring for Coliform Bacteria in Small Water Systems

The effectiveness of Clark's presence–absence (P–A) test was compared with that of the membrane filter (MF) technique during an evaluation of the frequency‐of‐occurrence approach to microbiological monitoring of water systems. Results showed no significant difference between the fractions that...

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Bibliographic Details
Published in:Journal - American Water Works Association 1987-11, Vol.79 (11), p.59-63
Main Authors: Pipes, Wesley O., Mueller, Karolyn, Troy, Marleen, Minnigh, Harvey A.
Format: Article
Language:English
Subjects:
Bacteria
Coliforms
Membrane Filter Technique
Microbiological Analyses
Presence‐Absence Test
Small Water Systems
Water Quality Monitoring
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Summary:The effectiveness of Clark's presence–absence (P–A) test was compared with that of the membrane filter (MF) technique during an evaluation of the frequency‐of‐occurrence approach to microbiological monitoring of water systems. Results showed no significant difference between the fractions that were positive by the two methods. Major changes in the microbiological quality of the water were detected with equal frequency by the P–A test and the MF method and were detected more readily by the frequency‐of‐occurrence parameter than by the average MF coliform count.
ISSN:0003-150X
1551-8833
DOI:10.1002/j.1551-8833.1987.tb02944.x