MPN = Most Probable Number – CFUs = Colony Forming Units
The dashed red line indicates the recreational use threshold of 235 MPN of E. coli CFU per 100ml of sample.
Loudoun Wildlife is grateful to Friends of the Shenandoah River for providing the baseline E. coli data from 2021 and February 2022 for this project.
VA SOS Multimetric Index Score of 0 to 7 indicates unacceptable ecological conditions (red), 8 indicates indeterminate ecological conditions (gray), 9 to 12 indicates acceptable ecological conditions (green).
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