Guidelines for Canadian drinking water quality boron: Appendix A, Canadian water quality data

Table A-1. Total boron concentrations for select river basins across Canada, taken from Environment and Climate Change Canada's long-term monitoring data (2000-2015)
Region	River basin	Number of samples	Number of detects^{Table 1 Footnote a}	Median (mg/L)	Mean (mg/L)	90th percentile (mg/L)	Maximum (mg/L)
East	Maritime Coast	574	80	0.012	0.014	0.020	0.058
	Newfoundland and Labrador	1 005	972	0.003	0.004	0.008	0.014
	North Shore-Gaspé	37	34	0.001	0.001	0.002	0.002
	Saint John	89	0
Central	Winnipeg	44	44	0.007	0.010	0.008	0.124
Prairie	Assiniboine	743	742	0.120	0.014	0.240	2.08
	Churchill	245	245	0.030	0.030	0.060	0.130
	Lower Saskatchewan-Nelson	328	328	0.042	0.051	0.087	0.261
	Missouri	94	94	0.034	0.044	0.080	0.132
	North Saskatchewan	417	416	0.017	0.080	0.244	0.417
	South Saskatchewan	644	633	0.006	0.014	0.029	0.082
Pacific	Columbia	3 540	3 273	0.002	0.003	0.007	0.018
	Fraser	3 194	3 124	0.004	0.008	0.025	0.060
	Okanagan-Similkameen	906	902	0.006	0.007	0.012	0.016
	Pacific Coastal	2 421	2 338	0.008	0.009	0.018	0.043
	Peace-Athabasca	320	314	0.003	0.004	0.007	0.059
Arctic	Arctic Coast	133	112	0.003	0.004	0.006	0.056
	Keewatin	34	34	0.003	0.002	0.004	0.004
	Lower MacKenzie	839	817	0.008	0.009	0.015	0.057
	Yukon	596	586	0.002	0.003	0.005	0.013
Source: ECCC, 2017 Table A-1 Footnote a Method detection limit = 0.0005–0.010 mg/L Table 1 Return to footnote a referrer

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