"Facility-based releases of mercury, lead, cadmium and arsenic to water, Canada, 2003 to 2024",,,, ,,,, Year,Mercury (percentage change from 2003 level),Lead (percentage change from 2003 level),Cadmium (percentage change from 2003 level),Arsenic (percentage change from 2003 level) 2003,0,0,0,0 2004,-11,-14,-6,88 2005,40,-13,-31,166 2006,-11,-21,-24,114 2007,-33,-41,-24,37 2008,-44,-14,-49,146 2009,-10,-32,-35,-38 2010,-32,-22,-45,-42 2011,-7,-29,-45,-45 2012,-54,-42,-45,-42 2013,-44,-47,-44,-41 2014,508,499,28,"1,312" 2015,-71,-61,-55,-55 2016,-63,-64,-50,-49 2017,-68,-62,-45,-49 2018,-71,-56,-46,-53 2019,-72,-61,-41,-53 2020,-76,-69,-53,-56 2021,-74,-73,-55,-61 2022,-79,-71,-56,-57 2023,-75,-66,-56,-56 2024,-81,-67,-58,-60 ,,,, "Note: The indicator reports facility-based releases only. This chart accounts only for the releases to water reported in the National Pollutant Release Inventory based on the inventory reporting criteria for releases of mercury, lead, cadmium and arsenic and their compounds. The amounts presented in this indicator should not be interpreted as comprehensive totals of releases to water of these pollutants in Canada. In 2014, a significant spill at the Mount Polley mine in central British Columbia accounted for large releases of mercury, lead, cadmium and arsenic to water.",,,, Source: Environment and Climate Change Canada (2026) National Pollutant Release Inventory (https://open.canada.ca/data/en/dataset/40e01423-7728-429c-ac9d-2954385ccdfb). ,,,, Available on the Environmental indicators website (www.canada.ca/environmental-indicators).,,,,