Water is Never Truly Pure

Canadian drinking water supplies are generally of excellent quality. However, water in nature is never completely “pure.”
As it travels, our groundwater picks up bits and pieces of everything it comes into contact with, including minerals, silt, vegetation, fertilizers, and agricultural run-off.

While most of these substances are harmless, some may pose a health risk (Health Canada, http://hc-sc.gc.ca).
Ontario borders on four of the five Great Lakes and we have more than a quarter of a million lakes, rivers and streams and rich groundwater resources. (Water Regulations in Ontario – Ministry of the Environment, http://www.ene.gov.on.ca/environment/en/category/water/index.htm)