Conducting experiments at water treatment utilities in Connecticut, Massachusetts, and California the research team examines the applicability of using pulsed-field gel electrophoresis to track coliform bacteria from source water through the treatment train and into the distribution system. The technique may help utilities determine whether bacteria before and after treatment are from the same genetic population, and therefore have not been introduced during or by the treatment process. The techniques now used are not as precise. The conclusion is that molecular fingerprinting has practical applications in drinking water. Much of the data is appended. There is no index.
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