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Conclusions - State of Water Quality

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· There were no environmentally significant trends in water quality that could be identified through visual examination of the data.
· Peak non-filterable residue and turbidity values occurred during peak flow periods.
· High metals and non-filterable residue occurred together in samples collected over the period of record. This would indicate that the metals were in a particulate form, probably not biologically available and would be removed by drinking water treatment needed to remove turbidity.
· Total aluminum, cadmium, chromium, copper, iron, lead, manganese, nickel and zinc, organic carbon, apparent colour, non-filterable residue and turbidity values did not meet various water quality criteria at times due to high levels of suspended sediment carried by high river flow.
· Copper levels exceeded the aquatic life criteria most of the time, suggesting a naturally high copper mineralization in the watershed.
· Turbidity removal and disinfection would be needed prior to drinking.
· The river had a low sensitivity to acid inputs.
· The river was cool enough for drinking, but too cold for water-contact recreation.
· Hardness levels were generally below the optimum range for drinking water in the summer months and at or above the optimum range in the winter months, but were still quite acceptable for drinking.

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