Bacteria
How frequently is the potable water tested for bacteria (fecal
coliform)?
Frequency of Testing Percentage of tests
(no. of tests/month) that indicate presence
of fecal coliform after
treatment
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< 40 < 1% - No Problem at this level.
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> 1%
> 40 < 5% - No Problem at this level.
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> 5%
NOTE: The EPA has established a Maximum Contaminant Level Goal
(MCLG) of zero total coliforms and fecal coliforms per 100 ml
sample (AWWA, 1990).
? Information on Bacteria