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Distribution of municipal wastewater discharges treatment type in Canada as of 2017, by province

Characteristic	Primary treatment	Secondary treatment	Tertiary treatment	No treatment (including CSOs)*
Canada	25.3%	46.5%	23.7%	4.4%
Newfoundland and Labrador	48.7%	13.5%	1.1%	36.6%
Prince Edward Island	0.8%	78.8%	20.4%	0%
Nova Scotia	40.5%	25.3%	9.7%	24.5%
New Brunswick	19.1%	68.5%	0.5%	11.9%
Quebec	50%	39.8%	7.4%	2.7%
Ontario	0.6%	59.4%	39%	1%
Manitoba	1.7%	75.1%	18.8%	4.5%
Saskatchewan	0%	54.8%	45.1%	0.1%
Alberta	0.1%	17.3%	81.4%	1.2%
British Columbia	36.5%	45.1%	7.3%	11.1%
Yukon	0%	100%	0%	0%

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Source

Release date

June 2019

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Region

Canada

Survey time period

2017

Supplementary notes

* Combined sewer overflows. Adapted from Statistics Canada, statcan.gc.ca, 2017. This does not constitute an endorsement by Statistics Canada of this product.

Citation formats

This statistic shows the distribution of municipal wastewater discharge treatment in Canada as of 2017, broken down by province. As of that year, around 36.6 percent of the municipal wastewater in Newfoundland and Labrador was discharged without any treatment. According to the source, this figure include the overflows from the combined sewer system directly to the water bodies.

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