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Water Quality

Water quality issues are an ongoing concern for any surface water source.  We, in Gillies Bay, are no exception. Cranby Lake is a living and dynamic habitat, affected by many factors which are not within our control: climate, wildlife, and other environmental influences make providing safe drinking water a challenge at best.


Annual water test results from Exova:

GBID water analysis 2017


Please click on the images below, to learn a little about what goes on at our lake in the warmer months.

The units indicated in the images are temperature of air and water (in Celsius), turbidity (in NTUs – the goal being less than 1 NTU), and total coliforms.  Coliforms are a measure of the organisms in the water which indicate changes in water quality.  Not all coliforms are harmful, but they give us an indication of the probability of the presence of dangerous organisms.

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