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EF/ ICR Logo National Source Water (Untreated) Levels of Total Coliform
SEPTEMBER 1997



REMINDER: Data Purpose: The ICR data were collected as part of a national research project to support development of national drinking water standards. They should NOT be used to determine local water systems compliance with drinking water standards, nor should they be used to make personal judgements about health risks.


National Source Water (Untreated) Levels of Total Coliform for SEPTEMBER 1997

National Source Water (Untreated) Levels of Total Coliform for SEPTEMBER 1997

Level of Total Coliform (Total Coliforms/100mL) Number of Water Treatment Plants
0 36
1-9 44
10-99 78
100-999 104
1,000-9,999 63
OVER 10,000 18


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