EESA01H3 Lecture Notes - Lecture 1: Radium Hot Springs, Kootenay National Park, Coliform Bacteria
17 Feb 2017
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Liquid natural capital: the earth is a (cid:449)ater pla(cid:374)et, water (cid:272)o(cid:448)ers (cid:1011)(cid:1005)% of the earth"s surfa(cid:272)e, mostl(cid:455) salt (cid:449)ater, no spe(cid:272)ies (cid:272)a(cid:374) li(cid:448)e (cid:449)ithout (cid:449)ater, s(cid:272)ulpti(cid:374)g the earth"s surfa(cid:272)e, moderati(cid:374)g (cid:272)li(cid:373)ate, removing and diluting wastes and pollutants. World problems: qua(cid:374)tit(cid:455) of (cid:449)ater, qualit(cid:455) of (cid:449)ater. 2025: withdra(cid:449)al- total amount of water removed from a river, lake or aquifer for any purpose. Some may be returned to the source for reuse but not all. 85% of water use for irrigatio(cid:374) is (cid:272)o(cid:374)su(cid:373)ed a(cid:374)d (cid:374)ot retur(cid:374)ed to it"s (cid:449)ater (cid:271)asi(cid:374) Water and your health: dri(cid:374)ki(cid:374)g (cid:449)ater, s(cid:449)i(cid:373)(cid:373)i(cid:374)g (cid:449)ater. Drinking water: a(cid:374)(cid:374)ual reports o(cid:374) lo(cid:272)al dri(cid:374)ki(cid:374)g water quality, naturall(cid:455) pure (cid:449)ater & distilled water, natural (cid:272)o(cid:374)te(cid:374)t of (cid:373)i(cid:374)erals i(cid:374) (cid:449)ater, surfa(cid:272)e (cid:449)ater. In urban areas rivers lakes springs cisterns: grou(cid:374)d (cid:449)ater- in rural areas. Quality of water: water ph hard(cid:374)ess color tur(cid:271)idit(cid:455) taste odor mi(cid:272)ro(cid:271)es a(cid:374)d che(cid:373)i(cid:272)als. Arsenic fluoride lead nitrates: industrial organic contaminants. Pesticides and herbicides volatile organic compounds (voc: disinfection byproducts.
