As a representative urban stream in Korea, the Gwangju (GJ) stream suffers from chronic fecal contamination. In this study, to characterize levels of fecal pollution in the GJ stream, the monthly monitoring data for seven years (from 2001 to 2007) and the hourly monitoring data from two field experiments were examined with respect to seasonal/daily variations and spatial distribution under wet and dry weather conditions. This research revealed that concentrations of fecal indicator bacteria strongly varied depending on the prevalent meteorological conditions. That is, during the dry daytime, fecal indicator bacteria concentrations decreased due to inactivation from solar irradiation, but rapidly increased in the absence of sunlight, suggesting external source inputs. In addition, bacterial concentrations substantially increased during rainfall events, due probably to a major contribution from combined sewer overflow. The observations in this study can be useful for implementing fecal pollution management strategies and for predicting fecal contamination as a function of meteorological conditions.
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Research Article|
June 01 2010
Spatial and temporal variability of fecal indicator bacteria in an urban stream under different meteorological regimes
Sung Min Cha;
Sung Min Cha
1Department of Environmental Science and Engineering, Gwangju Institute of Science and Technology (GIST), 261 Cheomdan-gwagiro, Buk-gu, Gwangju 500-712, South Korea
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Seung Won Lee;
Seung Won Lee
1Department of Environmental Science and Engineering, Gwangju Institute of Science and Technology (GIST), 261 Cheomdan-gwagiro, Buk-gu, Gwangju 500-712, South Korea
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Yong Eun Park;
Yong Eun Park
1Department of Environmental Science and Engineering, Gwangju Institute of Science and Technology (GIST), 261 Cheomdan-gwagiro, Buk-gu, Gwangju 500-712, South Korea
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Kyung Hwa Cho;
Kyung Hwa Cho
1Department of Environmental Science and Engineering, Gwangju Institute of Science and Technology (GIST), 261 Cheomdan-gwagiro, Buk-gu, Gwangju 500-712, South Korea
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Seungyoon Lee;
Seungyoon Lee
2K-water Research Institute (KRI) Korea Water Resources Corporation 462-1, Jeonmin-dong, Yuseonjg-gu, Daejeon 305-730, South Korea
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Joon Ha Kim
1Department of Environmental Science and Engineering, Gwangju Institute of Science and Technology (GIST), 261 Cheomdan-gwagiro, Buk-gu, Gwangju 500-712, South Korea
3Sustainable Water Resource Technology Center, GIST, 261 Cheomdan-gwagiro, Buk-gu, Gwangju 500-712, South Korea
E-mail: [email protected]
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Water Sci Technol (2010) 61 (12): 3102–3108.
Citation
Sung Min Cha, Seung Won Lee, Yong Eun Park, Kyung Hwa Cho, Seungyoon Lee, Joon Ha Kim; Spatial and temporal variability of fecal indicator bacteria in an urban stream under different meteorological regimes. Water Sci Technol 1 June 2010; 61 (12): 3102–3108. doi: https://doi.org/10.2166/wst.2010.261
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