London's Pulse: Medical Officer of Health reports 1848-1972
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Hints from the Health Department. Leaflet from the archive of the Society of Medical Officers of Health. Credit: Wellcome Collection, London
Kingston upon Thames 1970
[Report of the Medical Officer of Health for Kingston-upon-Thames]
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129
Results of the Chemical Examination of
Water supplied to Borough.
(in milligrammes per litre)
Number of Samples 363
Ammoniacal Nitrogen 0.026
Albuminoid Nitrogen 0.083
Nitrate Nitrogen 4.8
Oxygen abs. from KHn04 4 hrs. at 27 C. 1.02
Hardness (total) CaC03 274
Hardness (non-carbonate) CaC03 79
Magnesium as Mg 5
Sodium as Na 27.7
Potassium as K 5.6
Chloride as CI 40
Phosphate as P04 2.7
Silicate as Si02 9
Sulphate as S04 70
Natural Fluoride as F 0.20
Surface-active material as Manoxol OT 0.03
Turbidity units 0.1
Colour (Burgess units) 11
pH value 7.9
Electrical Conductivity (micromhos) 570