A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Occurrence and Distribution of Microbiological Indicators in Groundwater and Stream Water
A total of 136 stream water and 143 groundwater samples collected in five important hydrologic systems of the United States were analyzed for microbiological indicators to test monitoring concepts in a nationally consistent program. Total coliforms were found in 99%, Escherichia coli in 97%, and Clostridium perfringens in 73% of stream water samples analyzed for each bacterium. Total coliforms were found in 20%, E. coli in less than 1%, and C. perfringens in none of the groundwater samples analyzed for each bacterium. Although coliphage analyses were performed on many of the samples, contamination in the laboratory and problems discerning discrete plaques precluded quantification. Land use was found to have the most significant effect on concentrations of bacterial indicators in stream water. Presence of septic systems on the property near the sampling site and well depth were found to be related to detection of coliforms in groundwater, although these relationships were not statistically significant. A greater diversity of sites, more detailed information about some factors, and a larger dataset may provide further insight to factors that affect microbiological indicators.
Occurrence and Distribution of Microbiological Indicators in Groundwater and Stream Water
A total of 136 stream water and 143 groundwater samples collected in five important hydrologic systems of the United States were analyzed for microbiological indicators to test monitoring concepts in a nationally consistent program. Total coliforms were found in 99%, Escherichia coli in 97%, and Clostridium perfringens in 73% of stream water samples analyzed for each bacterium. Total coliforms were found in 20%, E. coli in less than 1%, and C. perfringens in none of the groundwater samples analyzed for each bacterium. Although coliphage analyses were performed on many of the samples, contamination in the laboratory and problems discerning discrete plaques precluded quantification. Land use was found to have the most significant effect on concentrations of bacterial indicators in stream water. Presence of septic systems on the property near the sampling site and well depth were found to be related to detection of coliforms in groundwater, although these relationships were not statistically significant. A greater diversity of sites, more detailed information about some factors, and a larger dataset may provide further insight to factors that affect microbiological indicators.
Occurrence and Distribution of Microbiological Indicators in Groundwater and Stream Water
Francy, Donna S. (author) / Helsel, Dennis R. (author) / Nally, Rebecca A. (author)
Water Environment Research ; 72 ; 152-161
2000-03-01
10 pages
Article (Journal)
Electronic Resource
English
Correlation of Cryptosporidium and Giardia Occurrence in Groundwater With Surface Water Indicators
| British Library Conference Proceedings | 1998
Fungi as environmental microbiological indicators
| British Library Conference Proceedings | 1998
Occurrence and Distribution of Ammonium in Iowa Groundwater
| Wiley | 2002
Receiving Water Quality Indicators for Judging Stream Improvement
| British Library Conference Proceedings | 1999
The influence of environmental factors on microbiological indicators of coastal water pollution
| British Library Conference Proceedings | 1998