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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
Lambeth 1967
[Report of the Medical Officer of Health for Lambeth Borough]
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110
Tests for lead have been carried out in connection with chemical analyses of
samples of running water collected from premises in the distribution system and I
set out below the information obtained over the period 1st January to 31st
December, 1967:-
Average Results of Chemical Examination Milligrames per litre (unless otherwise stated)
| Description of the Sample | Number of Samples | Ammoniacal Nitrogen | Albuminoid Nitrogen | Nitrate Nitrogen | Oxygen abs. from KMn04 4 hrs at 27°C. | B.O.D. 5 days at 20° C. |
|---|---|---|---|---|---|---|
| Hampton | 52 | 0.019 | 0. 090 | 4.2 | 1.10 | |
| Thames derived, South of River | 156 | 0.021 | 0. 088 | 4.2 | 1.12 | |
| Honor Oak well | 1 | 0.054 | 0. 024 | 0.4 | Nil | |
| Description of the Sample | H ardness (total) CaCO3 | Hardness (non-carbonate) CaC03 | Magnesium as Mg | Sodium Potassium as Na | Sodium Potassium as K | Chloride as Cl |
| Hampton | 284 | 72 | 5 | 22.6 | 5.1 | 30 |
| Thames-derived, South of River | 272 | 69 | 5 | 22.6 | 5.1 | 30 |
| Honor Oak well | 300 | 45 | 10.5 | 3.4 | 13 | |
| Description of the Sample | Phosphate as P04 | Silicate as SiO2 | Sulphate as SO4 | Natural Fluoride as F | Surface-active Material as Uanoxol OT | CO2 |
| Hampton | 1.9 | 10 | 64 | 0. 30 | 0.01 | |
| Thames-derived, South of River | 1.9 | 9 | 64 | 0.30 | 0.01 | |
| Honor Oak well | 0.5 | 33 | ||||
| Description of the Sample | Turbidity units | Colour (Burgess units) | PH value | Electrical Conductivity (micromhos) | ||
| Hampton | 0. 1 | 11 | 7.9 | 590 | ||
| Thames-derived. South of River | 0. 1 | 12 | 7.9 | 580 | ||
| Honor Oak wel1 | 0.3 | 3 | 7.3 | 500 |