Environment Canada published a review of Threats to Sources of Drinking Water and Aquatic Ecosystem Health In Canada in 2001 and a later analysis of Threats to Water Availability in Canada in 2004.
Both documents can be downloaded and viewed by clicking on the links above.
The reports are still relevant today and explain how population pressure and changes in land use can affect surface and groundwater sources.
Sylvan Lake Watershed Stewardship Society 