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created Sep 11 2015

updated May 3 2019

Description

The Watershed Contaminant Reduction Index measures contaminants released into the North Saskatchewan River from the City of Edmonton, adjusted for population. The index is calculated annually using measured and estimated amounts of sediments, nutrients (ammonia and phosphorus) and bacteria released into the river, referenced to a baseline. Contaminant sources from the City of Edmonton include
the wastewater treatment plant, combined sewer overflow sites and storm water outfalls. An increase in the index is good and means less contaminants are released to the river. A five-year running average is used to smooth out fluctuations due to weather.

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Tags
watershed, contaminant, index, reduction
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General Information
Purpose
The Watershed Contaminant Reduction Index measures contaminants released into the North Saskatchewan River from the City of Edmonton, adjusted for population.
Department
Financial Services and Utilities
Branch
Drainage Services
Time Frame
Date Made Public
September 22, 2015
Update Frequency
Annually
Automated or Manual
Manual
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