"Facility-based lead releases to water by source, Canada, 2003 to 2023",,,,,, ,,,,,, Year,Wastewater treatment (releases to water in kilograms),Pulp and paper industry (releases to water in kilograms),Other sources (releases to water in kilograms),Non-ferrous smelting and refining (releases to water in kilograms),Mining and rock quarrying (releases to water in kilograms),Total (releases to water in kilograms) 2003,15487.10,2583.00,1901.80,2253.90,2112.90,24338.70 2004,11526.40,2886.40,1631.80,2881.50,1925.50,20851.70 2005,9472.50,3340.50,1964.50,2778.40,3713.50,21269.40 2006,9899.80,2365.90,1569.50,1874.60,3429.60,19139.30 2007,6417.40,2370.80,1396.10,1819.40,2252.40,14256.20 2008,11582.80,2424.60,1493.60,2194.10,3274.90,20970.00 2009,8475.90,2252.70,1971.60,2148.80,1611.50,16460.40 2010,11973.30,2117.40,1938.80,1526.60,1341.90,18898.00 2011,8990.80,2888.10,1886.30,1518.90,1876.00,17160.10 2012,4698.60,2864.80,1642.40,1773.60,3074.40,14053.80 2013,4660.30,2423.30,1905.90,1483.60,2388.70,12861.90 2014,5114.70,1849.40,1417.60,1768.10,135559.60,145709.40 2015,4395.90,1459.90,1236.70,1338.70,991.30,9422.50 2016,3880.00,1576.90,855.70,1527.60,1042.00,8882.20 2017,4375.80,1444.00,1131.30,1111.40,1078.40,9140.90 2018,4596.90,3013.20,1343.50,1117.80,620.50,10692.40 2019,4707.70,2135.20,1329.30,1136.90,266.30,9575.40 2020,4191.60,1122.50,1004.10,1085.70,240.30,7644.20 2021,3482.60,972.10,1081.90,790.30,307.70,6634.60 2022,3782.60,993.90,1408.40,627.90,183.10,6995.90 2023,4393.80,1071.00,1465.20,694.70,537.10,8161.80 ,,,,,, "Note: Totals may not add up due to rounding. The indicator reports facility-based releases only. The indicator includes the amount of elemental lead and lead in any compound, alloy or mixture reported in the National Pollutant Release Inventory based on the inventory reporting criteria. As a result, the reported lead releases to water account for only a portion of the releases of this toxic pollutant to water in Canada. “Other sources” include electric utilities, manufacturing (except the pulp and paper industry), the oil and gas industry, ore and mineral industries (except non-ferrous smelting and refining), solid waste management, transportation (road, rail, air and marine) 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).,,,,,,