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Drinking water quality standards
From:Wikipedia | Edit:insomila | Time :2739天前 | 3875 Times visit: | 分享到:
Drinking water quality standards describes the quality parameters set for drinking water. Despite the truth that every human on this planet needs drinking water to survive and that water may contain many harmful constituents, there are no universally recognized and accepted international standards for drinking water.

ns indicates that no standard exists. μg/l -> Micro grams per litre or 0.001 ppm, mg/L -> 1 ppm or 1000 μg/l

Parameter Table World Health Organization European Union United States China Canada [8]
1,2-dichloroethane “ 3.0 μg/l 5 μg/l “ “
Acrylamide “ 0.10 μg/l “ “ “
Aluminium Al 0,2 mg/l no limit listed
Antimony Sb ns 5.0 μg/l 6.0 μg/l “ 6.00 μg/l
Arsenic As 10μg/l 10 μg/l 10μg/l 50μg/l 10.0 μg/l
Barium Ba 700μg/l ns 2 mg/L “ 1.00 mg/L
Benzene 10μg/l 1.0 μg/l 5 μg/l “ “
Benzo(a)pyrene “ 0.010 μg/l 0.2 μg/l 0.0028 μg/l “
Beryllium Be "
Boron B 2.4 mg/l 1.0 mg/L “ “ 5.00 mg/L
Bromate “ 10 μg/l 10 μg/l “ “
Cadmium Cd 3 μg/l 5 μg/l 5 μg/l 5 μg/l 5.00 μg/l
Calcium Ca 200 mg/L
Chromium Cr 50μg/l 50 μg/l 0.1 mg/L 50 μg/l (Cr6) 0.050 mg/L
Cobalt Co "
Copper Cu “ 2.0 mg/l TT 1 mg/l 1.00 mg/L
Cyanide “ 50 μg/l 0.2 mg/L 50 μg/l “
Epichlorohydrin “ 0.10 μg/l “ “ “
Fluoride 1.5 mg/l 1.5 mg/l 4 mg/l 1 mg/l “
Gold Au no limit listed
hardness CaCO3 0–75 mg/L = soft
Iron Fe 0,2 mg/l 0.300 mg/L
Lanthanum La no limit listed
Lead Pb “ 10 μg/l 15 μg/l 10 μg/l 10.0 μg/l
Magnesium Mg 50.0 mg/L
Manganese Mn 0, 05 mg/l 0.050 mg/L
Mercury Hg 6 μg/l 1 μg/l 2 μg/l 0.05 μg/l 1.00 μg/l
Molybdenum Mo no limit listed
Nickel Ni “ 20 μg/l “ “ no limit listed
Nitrate 50 mg/l 50 mg/l 10 mg/L (as N) 10 mg/L (as N) “
Nitrite “ 0.50 mg/l 1 mg/L (as N) “ “
Pesticides — Total “ 0.50 μg/l “ “ “
Pesticides (individual) “ 0.10 μg/ l “ “ “
pH 6.5 to 8.5
Phosphorus P no limit listed
Polycyclic aromatic hydrocarbons l “ 0.10 μg/ “ “ “
Potassium K no limit listed
Scandium Sc no limit listed
Selenium Se 40 μg/l 10 μg/l 50 μg/l 10 μg/l 10.0 μg/l
Silicon Si no limit listed
Silver Ag 0.050 mg/L
Sodium Na 200 mg/L
Strontium Sr no limit listed
Tetrachloroethene and Trichloroethene 40μg/l 10 μg/l “ “ “
Tin Sn no limit listed
Titanium Ti no limit listed
Tungsten W no limit listed
Uranium U 0.10 mg/L
Vanadium V no limit listed
Zinc Zn 5.00 mg/L
vinyl chloride 0,50 µg/l
chlorides 250 mg/l
electrical conductivity 2500 µS cm-1 at 20 °C
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