Turbidity levels in Cranbrook’s Phillips Reservoir are still elevated, but officials say conditions are slowly improving.
Despite the change, the City of Cranbrook and Interior Health will keep the community-wide water quality advisory in effect until further notice.
“Turbidity, which is currently holding at about 1 NTU since the water quality advisory came into effect on April 9, 2025, is a measure of water clarity or how much matter is suspended in the water, like soil particles,” said the City.
The City says turbidity is common with surface water systems as a result of snow melt or rain, and can make chlorination less effective.
“This increase in turbidity is likely because of the transition to spring weather, encouraging a fast lake turnover, which has stirred up sediment,” said the city.
Children, the elderly, those with weakened immune systems or anyone who wants additional protection should use boiled water or find a safe alternative for drinking, washing fruits and vegetables, making beverages or ice, or brushing teeth.
If you are using boiled water, you should keep it at a rolling boil for at least one minute and let it fully cool before use.
You can find up-to-date water quality information here.
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