Canadians may consume arsenic from their municipal drinking water or private well water, but usually these levels are very low. But some areas of Canada have higher levels of arsenic in drinking water. Arsenic gets into drinking water either from natural sources, such as rocks and soil, or by contamination from certain types of mining, smelting or manufacturing plants. Canadians could be exposed to unsafe amounts of arsenic if they drink water that has a high level of arsenic.
Showering, bathing, swimming and other activities involving water are not believed to be harmful because arsenic is not absorbed through the skin.
Other sources of exposure
You may also be exposed to arsenic from CCA-treated wood or by inhaling pollution from certain types of mining, smelting or manufacturing plants that release arsenic into the air. But this exposure is much less than through drinking water that contains arsenic.