Water Analysis as per Singapore Municipality Specifications and WHO Guidelines.
Singapore Standards Water Analysis | ||||||||
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Parameters | Unit | WHO Guideline ValueNote (1) | Environmental Public Health (Water Suitable for Drinking) (No.2) Regulations 2019 | GB | Average | Range | Compliance | Compliance to GB |
Benzene | µg/L | 10 | 10 | 10 | <1 | <1 | ü | ü |
Benzo[a] pyrene | µg/L | 0.7 | 0.7 | 0.01 | <0.07 | <0.07 | ü | ü |
Boron | mg/L | 2.4 | 2.4 | 1 | 0.267 | 0.006 -0.496 | ü | ü |
Bromate | mg/L | 0.01 | 0.01 | 0.01 | <0.002 | <0.002 – 0.003 | ü | ü |
Bromodichloromethane | µg/L | 60 | 60 | 60 | 6 | <5 -16 | ü | ü |
Bromoform | µg/L | 100 | 100 | 100 | <5 | <5-8 | ü | ü |
Cadmium | µg/L | 3 | 3 | 5 | <0.2 | <0.2 | ü | ü |
Calcium | mg/L | – | – | 16 | 5 – 62 | – | – | |
Carbofuran | µg/L | 7 | 7 | 7 | <0.05 | <0.05 | ü | ü |
Carbon Tetrachloride | µg/L | 4 | 4 | 2 | <0.4 | <0.4 | ü | ü |
Chlorate | mg/L | 0.7 | 0.7 | 0.7 | 0.141 | <0.043 – 0.447 | ü | ü |
Chlordane (total isomers) | µg/L | 0.2 | 0.2 | <0.02 | <0.02 | ü | ü | |
Chloride | mg/L | – | – | 250 | 27 | <5 – 117 | – | – |
Chlorine | mg/L | 5 | 5 | ≥0.05 | 2.19 | 1.36 – 2.91 | ü | ü |
Chlorite | mg/L | 0.7 | 0.7 | 0.7 | <0.015 | <0.015 | ü | ü |
Chloroform | µg/L | 300 | 300 | 60 | 11 | <5-42 | ü | ü |
Chlorotoluron | µg/L | 30 | 30 | <0.05 | <0.05 | ü | ü | |
Chlorpyrifos | µg/L | 30 | 30 | 30 | <0.1 | <0.1 | ü | ü |
Chromium | mg/L | 0.05 | 0.05 | 0.05 | <0.005 | <0.005 | ü | ü |
Copper | mg/L | 2 | 2 | 1 | <0.002 | <0.002-0.005 | ü | ü |
Cyanazine | µg/L | 0.6 | 0.6 | <0.2 | <0.2 | ü | ü | |
Cyanide | mg/L | – | 0.07 | 0.05 | <0.03 | <0.03 | ü | ü |
Cyanogen chloride (as cyanide) | µg/L | – | 70 | <50 | <50 | ü | ü | |
Cylindrospermopsins (Total) | µg/L | 0.7 | – | <0.1 | <0.1 | ü | ü | |
2,4-D (2,4-dichlorophenoxyacetic acid) in free acid form | µg/L | 30 | 30 | 30 | <0.05 | <0.05 | ü | ü |
2,4-DB [4-(2,4-Dichlorophenoxy)butyric acid] | µg/L | 90 | 90 | <0.05 | <0.05 | ü | ü | |
DDT and metabolites | µg/L | 1 | 1 | 1 | <0.01 | <0.01 | ü | ü |
Di(2-Ethylhexyl) phthalate | µg/L | 8 | 8 | 8 | <1 | <1 | ü | ü |
1,2-Dibromo-3-Chloropropane (DBCP) | µg/L | 1 | 1 | <0.1 | <0.1 | ü | ü | |
Dibromoacetonitrile | µg/L | 70 | 70 | <7 | <7 | ü | ü | |
Dibromochloromethane | µg/L | 100 | 100 | 300 | <5 | <5 – 9 | ü | ü |
Dibromoethane, 1,2- (Ethylene Dibromide) | µg/L | 0.4 | 0.4 | 0.05 | <0.05 | <0.05 | ü | ü |
Dichloroacetate | µg/L | 50 | 50 | 80 | 7 | <5 – 25 | ü | ü |
Dichloroacetonitrile | µg/L | 20 | 20 | <1 | <1-2.79 | ü | ü | |
Dichlorobenzene, 1,2- | µg/L | 1000 | 1000 | 300 | <1 | <1 | ü | ü |
Dichlorobenzene, 1,4- | µg/L | 300 | 300 | 300 | <1 | <1 | ü | ü |
Dichloroethane, 1,2- | µg/L | 30 | 30 | 30 | <2 | <2 | ü | ü |
Dichloroethene (cis & trans), 1,2- | µg/L | 50 | 50 | 30,50 | <5 | <5 | ü | ü |
Dichloromethane | µg/L | 20 | 20 | 20 | <3 | <3 | ü | ü |
Dichloropropane, 1,2- | µg/L | 40 | 40 | <1 | <1 | ü | ü | |
Dichloropropene, 1,3- | µg/L | 20 | 20 | <2 | <2 | ü | ü | |
Dichlorvos | µg/L | – | 20 | 1 | <0.02 | <0.02 | ü | ü |
Dicofol | µg/L | – | 10 | <0.01 | <0.01 | ü | ü | |
Dichlorprop | µg/L | 100 | 100 | <0.05 | <0.05 | ü | ü | |
Dimethoate | µg/L | 6 | 6 | 6 | <0.1 | <0.1 | ü | ü |
Dioxane, 1,4- | µg/L | 50 | 50 | <1 | <1 | ü | ü | |
Diquat | µg/L | – | 30 | <2.5 | <2.5 | ü | ü | |
Endrin | µg/L | 0.6 | 0.6 | <0.01 | <0.01 | ü | ü | |
Epichlorohydrin | µg/L | 0.4 | 0.4 | 0.4 | <0.1 | <0.1 | ü | ü |
Ethylbenzene | µg/L | 300 | 300 | <1 | <1 | ü | ü | |
Edetic acid (EDTA-Ethylene Diamine Tetraacetic Acid) in free acid form | µg/L | 600 | 600 | <1 | <1 | ü | ü | |
Fenoprop (2,4,5-TP; 2,4,5-trichlorophenoxy propionic acid) | µg/L | 9 | 9 | <0.05 | <0.05 | ü | ü | |
Fluoride | mg/L | 1.5 | 0.7 | 1 | 0.46 | 0.32-0.58 | ü | ü |
Glyphosate and Aminomethylphosphonic acid (AMPA) | µg/L | – | 900 | 700 | <5 | <5 | ü | ü |
Hexachlorobutadiene | µg/L | 0.6 | 0.6 | 0.6 | <0.01 | <0.01 | ü | ü |
Hydroyatrazine | µg/L | 200 | 200 | <0.5 | <0.5 | ü | ü | |
Isoproturon | µg/L | 9 | 9 | <0.05 | <0.05 | ü | ü | |
Iron | mg/L | – | – | 0.3 | 0.003 | <0.003 – 0.020 | – | – |
Lead | µg/L | 10 | 10 | 10 | <0.5 | <0.5 | ü | ü |
Lindane | µg/L | 2 | 2 | 2 | <0.01 | <0.01 | ü | ü |
Malathion | µg/L | – | 900 | 250 | <0.02 | <0.02 | ü | ü |
MCPA (4-Chloro-2-methylphenoxyacetic acid) | µg/L | – | 700 | <0.05 | <0.05 | ü | ü | |
Mecoprop [MCPP; 2-(2-methyl-chlorophenoxy) propionic acid] | µg/L | 10 | 10 | <0.05 | <0.05 | ü | ü | |
Mercury, in inorganic form | µg/L | 6 | 6 | 1 | <0.03 | <0.03 | ü | ü |
Methoxychlor | µg/L | 20 | 20 | <0.01 | <0.01 | ü | ü | |
Metolachlor | µg/L | 10 | 10 | <1 | <1 | ü | ü | |
Microcystin-LR | µg/L | – | 1 | 1 | <0.1 | <0.1 | ü | ü |
Microcystins (Total) | µg/L | 1 | – | <0.5 | <0.5 | ü | ü | |
Molinate | µg/L | 6 | 6 | <0.6 | <0.6 | ü | ü | |
Monochloramine | mg/L | 3 | 3 | 2.01 | 1.25 – 2.12 | ü | ü | |
Monochloroacetic acid (chloroacetic acid) | µg/L | 20 | 20 | <10 | <10 | ü | ü | |
Manganese | mg/L | 0.08 | 0.4 | 0.1 | <0.002 | <0.002 – 0.012 | ü | ü |
Magnesium | mg/L | – | – | 0.27 | <0.027-2.02 | – | – | |
Molybdenum | mg/L | – | 0.07 | 0.07 | <0.004 | <0.004- 0.004 | ü | ü |
Nickel | mg/L | 0.07 | 0.07 | 0.02 | <0.003 | <0.003- 0.006 | ü | ü |
Nitrate (as N) | mg/L | 11 | 11 | 10 | 0.07 | <0.01 – 0.83 | ü | ü |
Nitrilotriacetic acid (NTA) | µg/L | 200 | 200 | <1 | <1 | ü | ü | |
Nitrite (as N) | mg/L | 0.9 | 0.9 | 1 | <0.01 | <0.01-0.04 | ü | ü |
Nitrate plus nitrite combined | units | 1 | 1 | <0.011 | <0.011 – 0.045 | ü | ü | |
N-Nitrosodimethylamine (NDMA) | ng/L | 100 | 100 | 100 | <2 | <2 – 2.8 | ü | ü |
Pendimethalin | µg/L | 20 | 20 | <1 | <1 | ü | ü | |
Pentachlorophenol | µg/L | 9 | 9 | 9 | <0.5 | <0.5 | ü | ü |
Perchlorate | µg/L | 70 | 70 | 70 | <2 | <2 | ü | ü |
Permethrin, where used as a larvicide for public health purposes | µg/L | – | 300 | <2 | <2 | ü | ü | |
Pyriproxyfen | µg/L | – | 300 | <0.05 | <0.05 | ü | ü | |
Saxitoxins (Total) | µg/L | 3 | – | <0.1 | <0.1 | ü | ü | |
Selenium | µg/L | 40 | 40 | 10 | <0.5 | <0.5 | ü | ü |
Simazine | µg/L | 2 | 2 | <0.2 | <0.2 | ü | ü | |
Styrene | µg/L | 20 | 20 | 20 | <2 | <2 | ü | ü |
Sulphate | mg/L | – | – | 250 | 6 | 1.4 – 67 | – | – |
Silica (as SiO2) | mg/L | – | – | 0.87 | 0.18 – 6.12 | – | – | |
Sodium | mg/L | – | – | 200 | 15.7 | 1.6 – 41 | – | – |
Terbuthylazine (TBA) | µg/L | 7 | 7 | <0.7 | <0.7 | ü | ü | |
Tetrachloroethene | µg/L | 100 | 40 | 40 | <1 | <1 | ü | ü |
Toluene | µg/L | 700 | 700 | 700 | <5 | <5 | ü | ü |
Trichloroethene | µg/L | 8 | 20 | 20 | <1 | <1 | ü | ü |
Trichlorophenol, 2,4,6- | µg/L | 200 | 200 | 200 | <1 | <1 | ü | ü |
2,4,5-T (2,4,5-Trichlorophenoxyacetic acid) | µg/L | 9 | 9 | <0.05 | <0.05 | ü | ü | |
Trichloroacetate | µg/L | 200 | 200 | 100 | <5 | <5 – 20 | ü | ü |
Trifluralin | µg/L | 20 | 20 | 20 | <1 | <1 | ü | ü |
Total Trihalomethanes Ratio | units | <1 | <1 | <1 | <0.2 | <0.2 – 0.42 | ü | ü |
Total Organic Carbon (TOC) | mg/L | – | – | 5 | 0.8 | <0.1 – 1.7 | – | – |
Total Alkalinity (as CaCO3) | mg/L | – | – | 39 | 9 – 69 | – | – | |
Total Hardness (as CaCO3) | mg/L | – | – | 450 | 41 | 13- 162 | – | – |
Total Phosphorous (as P) | mg/L | – | – | 0.007 | <0.003 – 0.029 | – | – | |
Uranium | µg/L | 30 | 30 | 30 | 0.004 | <0.001 – 0.013 | ü | ü |
Vinyl Chloride | µg/L | 0.3 | 0.3 | 1 | <0.1 | <0.1 | ü | ü |
Xylenes | µg/L | 500 | 500 | 500 | <15 | <15 | ü | ü |