New information about high level of pollution were published in a the journal Environmental Pollution by provincial government scientists who were not made available to speak to reporters,
The Canadian Press has reported on data that shows contamination from coal mines is already present in Alberta rivers at levels that exceed provincial guidelines. The government has closed the monitoring stations on those waterways.
From an article in 2019. Source
Hey, don’t you know that unmeasured = nonexistent? We’re all just infants playing peek-a-boo.