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Rescinded Water Quality Advisory

The precautionary Water Quality Advisory for the City of Castlegar has been rescinded.

This decision was made in collaboration with Interior Health now that turbidity levels have improved to within acceptable limits. This was determined following monitoring and assessment of the water turbidity levels over the weekend.

The Water Quality Advisory was put in place on September 1, 2023, following levels that exceeded the recommended levels set by Interior Health.

What Residents Can Do

Residents may want to consider flushing a tap for a few minutes if they have not been using their water during the Water Quality Advisory.

What is Turbidity?

Turbidity is a measure of how clear or cloudy the water is. These particles can interfere with the disinfection process and may reduce UV & chlorine effectiveness. Turbidity in the good and fair range is invisible to the human eye. The water quality from the Lower Arrow Lake source is typically rated as good. Health risks increase as turbidity rises, particularly for at-risk populations such as children, the elderly, and people with weakened immune systems.  Contaminants such as viruses, bacteria, and parasites can attach themselves to the suspended particles in turbid water.  These particles can then interfere with disinfection, limiting chlorine’s ability to remove or inactivate the contaminants.


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