Table 20
Number of drinking water plants, population served, treated water volume and operation and maintenance costs by treatment category

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Number of drinking water plants, population served, treated water volume and operation and maintenance costs by treatment category
	Drinking water plants ¹	Population served			Treated water volume			Operation and maintenance costs ²
	2005 to 2007	2005	2006	2007	2005	2006	2007	2005	2006	2007
	number	persons			millions of cubic metres			millions of dollars
Treatment category ³
Canada ⁴	2,158 ^A	27,197,110 ^A	27,452,621 ^A	27,856,304 ^A	5,706.2 ^A	5,561.1 ^A	5,616.8 ^A	739.6 ^A	757.5 ^A	807.2 ^A
Conventional treatment	471 ^A	13,719,600 ^A	13,870,826 ^A	14,088,512 ^A	2,690.4 ^A	2,625.9 ^A	2,665.4 ^A	390.2 ^A	401.1 ^A	430.0 ^A
Direct filtration	105 ^B	2,305,173 ^A	2,339,873 ^A	2,381,136 ^A	435.6 ^A	421.5 ^A	420.9 ^A	55.5 ^B	56.7 ^B	58.3 ^B
Granular media filtration	178 ^B	2,054,259 ^A	2,064,311 ^A	2,072,861 ^A	740.6 ^A	689.3 ^A	714.2 ^A	60.9 ^B	53.9 ^A	56.5 ^A
Cartridge or bag filter	x	x	x	11,208 ^E	F	F	F	x	x	x
Slow sand filtration	9 ^D	114,825 ^E	114,081 ^E	113,270 ^E	18.0 ^E	17.1 ^E	16.8 ^E	1.5 ^E	1.6 ^E	1.7 ^E
Granular media and slow sand filtration	27 ^D	32,580 ^E	32,001 ^E	x	7.5 ^E	7.5 ^E	7.3 ^E	2.7 ^D	3.4 ^D	3.3 ^D
Granular media filtration and cartridge or bag	x	x	x	x	x	x	x	x	x	x
Membrane filtration	63 ^C	464,985 ^C	465,698 ^B	513,964 ^B	112.4 ^D	104.3 ^B	104.3 ^B	24.6 ^B	28.2 ^B	32.8 ^B
Membrane filtration and granular media	29 ^D	792,767 ^A	797,278 ^A	793,427 ^A	126.3 ^A	130.2 ^A	141.7 ^A	12.4 ^B	13.4 ^B	14.1 ^B
Membrane filtration with cartridge or bag or slow sand	9 ^E	x	x	x	x	x	x	3.7 ^C	4.0 ^C	5.1 ^C
Disinfection only	674 ^A	3,065,986 ^A	3,068,309 ^A	3,108,571 ^A	660.9 ^A	649.9 ^A	569.4 ^B	72.7 ^A	74.0 ^A	76.5 ^B
Disinfection and other (unfiltered systems)	346 ^A	3,820,838 ^A	3,855,670 ^A	3,903,267 ^A	745.7 ^A	741.1 ^A	805.2 ^A	88.4 ^A	94.5 ^A	102.8 ^A
No treatment	187 ^B	545,004 ^D	559,937 ^D	565,244 ^D	115.4 ^D	123.9 ^C	121.3 ^D	21.7 ^D	21.4 ^D	20.6 ^D
No disinfection with other treatment	41 ^C	109,641 ^D	108,982 ^D	109,019 ^D	21.0 ^D	19.0 ^D	18.4 ^D	3.6 ^D	3.6 ^D	3.6 ^D

Estimates for all three years are calculated for a target population defined as drinking water plants serving a population of 300 or more persons in 2007.

Data do not include costs associated with the distribution of treated water (see page 7 of the questionnaire).

Plants were assigned to a category based on the reported treatment processes in section 4 of the questionnaire. Refer to Appendix I for the main processes applied in each treatment category.

Excludes Nunavut 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 20Number of drinking water plants, population served, treated water volume and operation and maintenance costs by treatment category

Archived Content

Table 20
Number of drinking water plants, population served, treated water volume and operation and maintenance costs by treatment category