FC/FS Ratio, Total Coliforms, Fecal Coliforms, Fecal Streptococcus, Des Moines River
The fecal coliform/fecal streptococcus (FC/FS) ratio and total coliform test were used in attempts to determine the degree and source of bacterial contamination present in the Des Moines River between April 18 and November 14, 1970. There were no predictable changes in the FC/FS ratio as the river passed from a rural area, through a metropolitan district, and on to another rural area; however, the total coliform counts did show variation with distance. The failure of the FC/FS ratio to indicate source of contamination was probably due to the highly varying external conditions acting upon the river.
Proceedings of the Iowa Academy of Science
©1973 Iowa Academy of Science, Inc.
Messley, Karen E. and Kingsbury, Phyllis J.
"The Fecal Coliform/Fecal Streptococcus Ratio as a Measure of Bacterial Contamination and Indicator of Its Source in the Des Moines River,"
Proceedings of the Iowa Academy of Science, 80(2), 74-77.
Available at: https://scholarworks.uni.edu/pias/vol80/iss2/12