"Facility-based arsenic releases to water by source, Canada, 2003 to 2023",,,,,, ,,,,,, Year,Wastewater treatment (releases to water in kilograms),Mining and rock quarrying (releases to water in kilograms),Pulp and paper (releases to water in kilograms),Non-ferrous smelting and refining (releases to water in kilograms),Other sources (releases to water in kilograms),Total (releases to water in kilograms) 2003,3726.1,8302.8,3231.8,1779.1,2043.1,19082.9 2004,2424,25209.2,3745.3,2363.2,2201.3,35942.9 2005,2004.2,40934.5,3660.6,2515.5,1656.8,50771.7 2006,2521.4,30555.6,3609.7,2767.4,1339.9,40794 2007,2217.2,15956.8,3706.3,2207,2092.5,26179.9 2008,3019.1,36944.7,3157.4,2481.4,1283.7,46886.3 2009,2759.8,2311.9,2610.5,2064.4,2007.1,11753.7 2010,2885.8,1704,2813.5,2005,1578,10986.4 2011,3170.5,2170.1,2628.8,1743.2,824.4,10536.9 2012,2852.5,2356.8,2836.6,1648.6,1374.9,11069.4 2013,1689.7,3818.5,2922.4,1911.5,969.9,11312 2014,2813.9,261634,2377.6,1793.7,793.4,269412.6 2015,2808.8,2174.8,2237.3,846.4,467.6,8534.8 2016,3162.3,2143.1,2120.6,1846.2,385,9657.3 2017,3387.5,2119.7,2250.3,1593.4,432,9782.8 2018,3172.2,1733.9,2217.6,1388.8,407.1,8919.6 2019,3211.6,1709.4,2039.3,1692.1,303.4,8955.7 2020,3474.3,1631.4,1765.4,1230,258.3,8359.3 2021,3368.9,1112.4,1709.4,949.7,300.6,7441 2022,3571.1,1196.5,1632.1,1044.6,791.8,8236.1 2023,3647.7,1474.4,1781,1125,414.9,8443 ,,,,,, "Note: Totals may not add up due to rounding. The indicator reports facility-based releases only. The indicator includes the amount of elemental arsenic and arsenic in any compound, alloy or mixture reported in the National Pollutant Release Inventory based on the inventory reporting criteria. As a result, the reported arsenic releases to water account for only a portion of the releases of this toxic pollutant to water in Canada. ‘Other sources’ include solid waste management, manufacturing (except the pulp and paper industry), the oil and gas industry, ore and mineral industries (except non-ferrous smelting and refining), and other miscellaneous sources. For more details on sources, please consult the Data sources and methods. (www.canada.ca/en/environment-climate-change/services/environmental-indicators/releases-harmful-substances-water.html#DSM). ",,,,,, Source: Environment and Climate Change Canada (2025) 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).,,,,,,