Key City officials have issued a water quality advisory on Wednesday, April 9, due to some cloudiness coming out of the water from a nearby source.
The turbidity level coming out of the Phillips Reservoir is currently at about 1 NTU, or “Fair” on the turbidity scale.

Turbidity Scale | City of Cranbrook
“Turbidity, which occurs when there is run-off from snow melt and rain events, is common when you are dealing with a surface water system like the City is with the Phillips Reservoir,” said the City of Cranbrook in a news release. “This increase in turbidity is likely because of the transition to spring weather encouraging a fast lake turnover which has stirred up sediment.”
Higher levels can cause issues with chlorination. For kids, seniors or anyone with weakened immune systems, the City and Interior Health Authority recommend boiled water or a safe alternative for the following:
- Drinking
- Washing fruits and vegetables
- Making beverages or ice
- Brushing teeth
Water must be brought to a rolling boil for at least one minute.
The advisory is set to remain until further notice. More information is available on the City of Cranbrook’s website.
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