Table 9: Final Human Health State of the Science Report on Lead

Table 9. Concentrations of lead (μg/L) in residential tap water in Canada
Sample location	Year	n	% > 10 μg/L	Concentration (μg/L)			Reference
Sample location	Year	n	% > 10 μg/L	Median	Min^{Table 9 footnote a}	Max^{Table 9 footnote a}	Reference
- not reported Table 9 footnotes Table 9 footnote a Min: minimum; Max: maximum. Return to table 9 footnote a referrer Table 9 footnote b No flushed sample protocol. Return to table 9 footnote b referrer Table 9 footnote c Water collected after 30 minutes of stagnation. Return to table 9 footnote c referrer Table 9 footnote d Homes with lead service lines. Return to table 9 footnote d referrer Table 9 footnote e Flushed sample (5 minute). Return to table 9 footnote e referrer Table 9 footnote f Homes without lead service lines. Return to table 9 footnote f referrer Table 9 footnote g Composite sample. Return to table 9 footnote g referrer Table 9 footnote h Water drawn upon entering home with no specified or known stagnation period. Return to table 9 footnote h referrer Table 9 footnote i Values below the method detection limit (MDL) are reported as 0. Return to table 9 footnote i referrer Table 9 footnote j Sampling 15 December 2007 to 15 April 2008 (cold water, winter sampling). Return to table 9 footnote j referrer Table 9 footnote k Sampling 15 June to 15 October 2008 (warm water, summer sampling). Return to table 9 footnote k referrer Table 9 footnote l Based on average of five 1L kitchen tap water samples collected per household. 1 L collected after 5 minute flush, four 1L sequential samples collected following 30 minutes of stagnation. Sampled September 2009 to March 2010 (fall sampling and winter (cold water) sampling). Approximately 56% of these households likely had lead service lines. Note: The column reporting % > 10 ug/L includes only samples collected after 5 minute flush. Return to table 9 footnote l referrer Table 9 footnote m Average of maximum values Return to table 9 footnote m referrer Table 9 footnote n From homes built prior to 1950 Return to table 9 footnote n referrer
British Columbia, First Nations reserves	2008-2009	568	0.5	-	-	20.4	Chan et al. 2011
Edmonton^{Table 9 footnote b}	2009	-	-	<0.5	-	-	EPCOR 2009
Saskatoon^{Table 9 footnote b}	2009	8	0	<2	-	-	Saskatoon 2009
Saskatchewan^{Table 9 footnote b}	2009	176	-	6.7	<0.1	60	Saskatchewan 2011
Winnipeg^{Table 9 footnote b}	2009	-	-	<1	<1	<1	Winnipeg 2009
Ontario^{Table 9 footnote c}	2007/8^{Table 9 footnote j}	37 517	2.3	Average: 2.0	-	-	OMOE 2009
Ontario^{Table 9 footnote c}	2008^{Table 9 footnote k}	37 895	3.1	Average: 1.9	-	491	OMOE 2009
Hamilton^{Table 9 footnote c}	2009	634	8	-	<1	97	Hamilton 2010
(North) Hamilton^{Table 9 footnote c}	2008	-	-	-	<0.5^{Table 9 footnote n}	28^{Table 9 footnote n}	Richardson et al. 2011
Waterloo^{Table 9 footnote c}	2009	121	0	-	<1	4	Waterloo 2009
Barrie^{Table 9 footnote c}	2009	512	0.2	-	0.11	23.9	Barrie 2010
Kingston^{Table 9 footnote c}	2009	198	8	-	<0.02	48.1	Kingston 2009
Ottawa^{Table 9 footnote c}	2009	264	4	-	<0.5	38	Ottawa 2011
St. Catharines^{Table 9 footnote c}	2009	2	0	-	<0.02	0.03	St. Catharines 2009
Sudbury^{Table 9 footnote c}	2009	790	0.5	-	1	17	Sudbury 2009
Thunder Bay^{Table 9 footnote b}	2009	454	21	-	<1	1320	Thunder Bay 2009
Montréal^{Table 9 footnote d, Table 9 footnote e}	2006	111	53	Average: 11	3	33	Beausoleil and Brodeur 2007
Montréal^{Table 9 footnote e, Table 9 footnote f}	2006	19	-	Average: 0.7	1	2.7
Montréal^{Table 9 footnote d, Table 9 footnote g}	2006	111	-	Average: 20	3	95^{Table 9 footnote m}
Montréal^{Table 9 footnote e, Table 9 footnote f}	2006	19	-	Average: 1	0.3	7^{Table 9 footnote m}
Montréal^{Table 9 footnote h}	2007	135	-	14, dissolved Pb	2.1	114	Deshommes et al. 2010
Montréal^{Table 9 footnote h}	2007	135	-	0.39, particulate Pb	<0.02	12	Deshommes et al. 2010
Montréal^{Table 9 footnote l} (4 selected boroughs)	2009/10	313	1.6 (5 homes)	2.08	0.06	27.98	INSPQ 2011
Province of Quebec	2005	1009	0.7	2	1	20	Quebec 2011
	2006	2220	0.3	3	1	90
	2007	2573	0.8	5	1	370
	2008	2649	0.4	3	0.5	45
	2009	2730	0.5	2	0.2	530
	2010	2678	0.6	2	0.06	154
Newfoundland and Labrador^{Table 9 footnote i}	2005	839	0.4	<1.0	<1.0	46.0	Newfoundland and Labrador 2011
	2006	1009	0.6	<1.0	<1.0	45.0
	2007	817	0.6	<1.0	<1.0	43.0
	2008	1148	0.6	0.20	<1.0	49.0
	2009	1029	0.4	<1.0	<1.0	54.0
	2010	489	0.2	<1.0	<1.0	52.0
St. John’s	2010	194	-	0.51e	0.11 e	19.1 e	Bell et al. 2011
St. John’s	2010	194	-	0.84^{Table 9 footnote c}	0.15^{Table 9 footnote c}	58.2^{Table 9 footnote c}	Bell et al. 2011

Page details

Date modified:: 2013-01-11

Language selection

Search

Table 9: Final Human Health State of the Science Report on Lead

Page details