Table 3
Surface water volumes processed by drinking water plants, by drainage region

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Surface water volumes processed by drinking water plants, by drainage region
	Drainage region code	Raw water			Treated water			Backwash and wastewater ¹
	Drainage region code	2005	2006	2007	2005	2006	2007	2005	2006	2007
	code	millions of cubic metres
Canada ²	…	5,263.8 ^A	5,141.4 ^A	5,186.3 ^A	5,031.9 ^A	4,891.0 ^A	4,935.0 ^A	231.9 ^A	250.4 ^A	251.3 ^A
Pacific Coastal and Yukon	101,105	414.7 ^A	428.1 ^A	360.8 ^A	414.5 ^A	427.9 ^A	360.6 ^A	0.2 ^E	0.2 ^E	0.3 ^E
Fraser–Lower Mainland	102	198.9 ^A	195.9 ^A	236.5 ^A	192.9 ^A	190.3 ^A	230.8 ^A	5.9 ^A	5.6 ^A	5.7 ^A
Okanagan–Similkameen	103	87.8 ^D	89.4 ^D	92.2 ^D	87.6 ^D	89.2 ^D	92.1 ^D	F	F	F
Columbia	104	36.9 ^D	37.1 ^D	36.6 ^D	35.8 ^D	35.8 ^D	35.2 ^D	1.1 ^E	1.3 ^E	1.4 ^E
Peace–Athabasca and Lower Mackenzie	206,207	45.1 ^A	47.3 ^A	47.7 ^A	42.1 ^A	44.1 ^A	44.7 ^A	3.0 ^C	3.2 ^C	3.1 ^C
Missouri	309	x	x	x	x	x	x	x	x	x
North Saskatchewan	410	151.2 ^A	156.6 ^A	160.4 ^A	141.4 ^A	146.5 ^A	144.4 ^A	9.8 ^A	10.1 ^A	16.0 ^A
South Saskatchewan	411	329.0 ^A	338.5 ^A	342.1 ^A	288.8 ^A	302.6 ^A	302.9 ^A	40.2 ^A	35.9 ^A	39.2 ^A
Assiniboine–Red	412	140.0 ^A	146.2 ^A	142.3 ^A	135.1 ^A	141.4 ^A	138.1 ^A	5.0 ^A	4.8 ^A	4.2 ^A
Winnipeg, Lower Saskatchewan–Nelson, Churchill and Northern Ontario	413,414,415,417	42.2 ^A	42.7 ^A	42.2 ^A	38.1 ^A	38.2 ^A	37.9 ^A	4.2 ^B	4.5 ^B	4.3 ^B
Northern Quebec	418	F	x	x	F	x	x	F	x	x
Great Lakes	519	1,579.5 ^A	1,531.6 ^A	1,556.6 ^A	1,501.0 ^A	1,442.8 ^A	1,474.9 ^A	78.5 ^A	88.8 ^A	81.7 ^A
Ottawa	520	342.3 ^B	334.6 ^B	330.4 ^B	322.0 ^B	303.5 ^B	310.0 ^B	20.3 ^B	31.1 ^C	20.4 ^A
St. Lawrence	521	1,486.2 ^A	1,405.0 ^A	1,442.2 ^A	1,435.1 ^A	1,355.0 ^A	1,384.6 ^A	51.1 ^B	49.9 ^B	57.7 ^B
North Shore–Gaspé	522	67.7 ^A	68.4 ^A	71.1 ^A	66.2 ^A	66.3 ^A	68.9 ^A	1.5 ^D	2.2 ^D	2.2 ^C
Saint John–St. Croix	523	x	8.0 ^A	8.2 ^B	x	8.0 ^A	8.2 ^B	x	0 ^...	0 ^...
Maritime Coastal	524	187.9 ^B	180.9 ^B	183.0 ^B	181.4 ^B	174.3 ^B	174.3 ^B	6.5 ^C	6.6 ^C	8.7 ^B
Newfoundland–Labrador	525	144.8 ^B	129.9 ^B	132.0 ^B	140.4 ^B	124.0 ^B	126.1 ^B	4.3 ^B	5.9 ^B	6.0 ^A

Calculated as the difference between raw water withdrawals and final volumes of treated water produced.

Excludes Arctic Coast–Islands and Keewatin–Southern Baffin Island due to low response.

Note(s):

Figures may not add up to totals due to rounding.

Source(s):

Statistics Canada, 2009, Environment Accounts and Statistics Division, Survey of Drinking Water Plants (survey number 5149).

Table 3Surface water volumes processed by drinking water plants, by drainage region

Archived Content

Table 3
Surface water volumes processed by drinking water plants, by drainage region