Abstract
The identification of sources of fecal pollution in urban streams or storm sewers is often difficult since fecal contamination events frequently are episodic and/or have ceased before a survey can be undertaken. As an alternative to sampling the water column and/or natural sediments, sediment bags suspended in the water column can act to integrate water quality data with respect to fecal coliform concentrations. Furthermore, sediment bags retain coliform bacteria after their initial sorption to the sand substrate. As a result, they can identify contaminant sources even though, as is often the case, the sampling survey is carried out after the pollution event.
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