"Regional water quality category by watershed, Canada, 2022 to 2024 period ",,,,, ,,,,, Water quality category,Atlantic Ocean (percentage of sites),Great Lakes and St. Lawrence River (percentage of sites),Hudson Bay (percentage of sites),Mackenzie River (percentage of sites),Pacific Ocean (percentage of sites) Excellent,2,4,14,16,0 Good,57,21,39,32,22 Fair,30,38,32,47,33 Marginal,11,28,16,5,33 Poor,0,9,0,0,11 ,,,,, "Note: For the Regional water quality in Canadian rivers indicator, water quality was assessed at 171 sites across Canada using the Canadian Council of Ministers of the Environment's water quality index (https://ccme.ca/en/resources/water-aquatic-life). Compared to the national indicator, the Regional water quality in Canadian rivers indicator uses 14 additional monitoring sites and includes more sites in the northern portions of the Mackenzie River and Pacific Ocean regions. Percentages may not add up to 100 due to rounding. For more information, consult the Data sources and methods section (https://www.canada.ca/en/environment-climate-change/services/environmental-indicators/water-quality-canadian-rivers.html#DSM).",,,,, "Source: Data assembled by Environment and Climate Change Canada from federal, provincial and joint water quality monitoring programs. Population, forestry, mining and land cover statistics for each site's drainage area were provided by Statistics Canada, Natural Resources Canada, Environment and Climate Change Canada, Agriculture and Agri-Food Canada, the Government of Alberta and the University of Maryland.",,,,, Available on the Environmental indicators website (www.canada.ca/environmental-indicators).,,,,,