Draft technical document guidelines for Canadian drinking water quality - Antimony: Canadian water quality data

Table B-1. Total antimony concentrations for select river basins across Canada, from Environment Canada's long-term monitoring data (2000–2015)
Region	River basin	Number of samples	Number of detects^{Footnote a}	Median (μg/L)	Mean (μg/L)	90th percentile (μg/L)	Maximum (μg/L)
East	Maritime Coast	2,139	1,669	0.03	0.03	0.05	0.29
	Newfoundland-Labrador	2,138	1,669	0.015	0.0365	0.093	1.41
	North Shore-Gaspé	52	51	0.007	0.0095	0.021	0.057
	Saint John-St. Croix	158	156	0.04	0.0436	0.06	0.22
Central	Winnipeg	109	109	0.059	0.0635	0.076	0.181
Prairie	Assiniboine-Red	1,036	1,035	0.27	0.2938	0.4423	3.00
	Churchill	346	346	0.024	0.0318	0.0433	0.861
	Lower Saskatchewan-Nelson	448	448	0.1335	0.1415	0.1941	0.398
	Missouri	145	145	0.116	0.1303	0.2082	0.431
	North Saskatchewan	545	540	0.081	0.0969	0.2342	0.438
	South Saskatchewan	880	874	0.037	0.0796	0.1858	1.04
Pacific	Columbia	4,191	4,135	0.047	0.0617	0.119	0.693
	Fraser	3,944	3,916	0.047	0.051	0.083	3.39
	Okanagan-Similkameen	1,076	1,070	0.053	0.0555	0.069	0.495
	Pacific Coastal	2,931	2,903	0.022	0.0589	0.142	1.32
	Peace-Athabasca	817	809	0.069	0.0892	0.1852	0.952
Arctic	Arctic Coast	220	201	0.019	0.0443	0.1258	0.581
	Keewatin-Southern Baffin Island	66	63	0.01	0.0324	0.1095	0.215
	Lower Mackenzie	1,415	1,409	0.116	0.1495	0.255	6.72
	Yukon	807	807	0.102	0.1251	0.1882	0.967
Footnotes Footnote 1 Method detection limit = 0.001–0.41 μg/L Return to footnote a referrer

Source: ECCC (2017)

Table B-2. Total antimony concentrations for select provinces groundwater monitoring studies across Canada
Jurisdiction (MDL μg/L)	Years	Source	# Detects/ samples	% Detection	Mean (μg/L)	90th percentile (μg/L)	Max (μg/L)
British Columbia^{Footnote 1} (0.02–1)	2014–2018	Untreated tap water as well as samples from disturbed locations (for example, mines)	31/64	48	0.96	0.55	11.80
Manitoba^{Footnote 2} (0.1–2)	2000–2018	Production and observation wells	330/646	51	0.50	0.70	26.00
Nova Scotia^{Footnote 3} (2)	1990–2019	Groundwater studies	45/1,886	2.4	NC	< DL	89.00
Quebec^{Footnote 4} (0.1–6)	1941–2014	Various research projects (possible sampling in groundwater of poor quality)	82/909	9.0	NC	< DL	9 400
Footnotes Footnote 1 British Columbia Ministry of Health (2019) Return to footnote 1 referrer Footnote 2 Manitoba Office of Drinking Water (2019). Data ranges from 2000–2018 Return to footnote 2 referrer Footnote 3 Nova Scotia Environment (2019) Return to footnote 3 referrer Footnote 4 Ministère du Développement durable, de l'Environnement et de la Lutte contre les changements climatiques du Québec (2019) Return to footnote 4 referrer

DL – detection limit; < DL – below detection limit (when 90th percentile with < 10% detects) – MDL: method detection limit; NC – not calculated (when % Detection is < 40%)

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Date modified:: 2022-12-23

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Draft technical document guidelines for Canadian drinking water quality - Antimony: Canadian water quality data

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