"Proportion of population served by municipal wastewater systems, Canada, 2013 to 2023",,,,,, ,,,,,, Year,Total population estimated,No treatment (percentage),Primary treatment (percentage),Secondary treatment (percentage),Tertiary treatment (percentage),Total (percentage) 2013,"34,146,704",1.8,13.9,43.0,27.3,86.0 2014,"34,481,712",1.8,13.7,43.1,27.5,86.2 2015,"34,816,720",1.8,13.7,43.0,27.6,86.1 2016,"35,151,728",1.8,13.7,42.8,27.7,86.0 2017,"35,519,779",1.8,13.6,42.8,27.8,86.0 2018,"35,887,829",1.9,13.5,42.8,27.9,86.1 2019,"36,255,880",1.8,13.6,42.6,28.0,85.9 2020,"36,623,930",1.8,13.5,42.5,28.0,85.9 2021,"36,991,981",0.9,13.5,42.4,29.2,85.9 2022,"37,360,032",0.8,12.9,43.0,29.2,85.9 2023,"37,728,082",0.8,12.9,42.9,29.3,85.9 ,,,,,, "Note: Totals may not add up due to rounding. Only the population served by municipal wastewater systems with a daily flow of 100 m3 or more was considered. Data were unavailable for the populations located in the Northwest Territories, Nunavut and north of the 54th parallel in the provinces of Quebec and Newfoundland and Labrador. ",,,,,, Source: Statistics Canada (2025) Table 38-10-0125-01 Population served by municipal wastewater systems by treatment category (https://www150.statcan.gc.ca/t1/tbl1/en/tv.action?pid=3810012501).,,,,,, Available on the Environmental indicators website (www.canada.ca/environmental-indicators).,,,,,,