Coliforms and Fecal Streptococcus in the Illinois River at Peoria, 1971-1976

Lin, Shun Dar; Evans, Ralph L.

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https://hdl.handle.net/2142/77765 Copy

Description

Title

Coliforms and Fecal Streptococcus in the Illinois River at Peoria, 1971-1976

Author(s)

• Lin, Shun Dar
• Evans, Ralph L.

Issue Date

1980

Keyword(s)

• Bacteria
• fecal coliform
• fecal streptococcus
• Illinois River
• time series analysis
• total coliform
• water pollution

Abstract

Water samples from the Illinois River at Peoria were collected weekly and examined for total coliform (TC), fecal coliform (FC), fecal streptococcus (FS), and 17 chemical and physical parameters. The bacteria data obtained during June 1971 to May 1976 were compiled and evaluated monthly, seasonally, and yearly. Wide ranges of bacterial densities were observed. The densities of TC and FC were high during the winter and summer, respectively. The FS counts fluctuated less with time. About 44 percent of the time FC densities complied with the Illinois Pollution Control Board rule regarding 200 per ml. Compliance with the rule regarding 400 FC per 100 ml was found to be the limiting factor. Approximately 7.1 percent of the TC densities consisted of FC. The FC/TC values were low in the winter and spring months and high in the summer and fall. Based on FC/FS ratio values, fecal contamination derived from human sources occurred in 41 percent of the samples collected during June through August. An attempt to correlate the bacterial densities with the 17 parameters measured was not successful. A time series analysis was performed to show the trends, seasonal and cyclical indexes, and irregular factors for the bacterial densities.

Publisher

Illinois State Water Survey

Series/Report Name or Number

Report of Investigation (Illinois State Water Survey) RI-093

Type of Resource

text

Language

en

Permalink

http://hdl.handle.net/2142/77765

Copyright and License Information

Copyright, University of Illinois Board of Trustees. All rights reserved. This document is a product of the Illinois State Water Survey, and has been selected and made available by the Illinois State Water Survey and the University Library, University of Illinois at Urbana-Champaign. It is intended for research and educational use, and proper attribution is requested.

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