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

Twickenham 1958

[Report of the Medical Officer of Health for Twickenham]

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21
Table 7

Table: AVERAGE RESULTS OF THE CHEMICAL AND BACTERIOLOGICAL EXAMINATION OF THE WATER SUPPLY TO THE BOROUGH OF TWICKENHAM FOR 1958Milligrammes per litre (unless otherwise stated)(a) chemical

AVERAGE RESULTS OF THE CHEMICAL AND BACTERIOLOGICAL EXAMINATION OF THE WATER SUPPLY TO THE BOROUGH OF TWICKENHAM FOR 1958

Milligrammes per litre (unless otherwise stated)

(a) chemical

Description of the SampleAmmonia NitrogenAlbuminoid NitrogenOxidised Nitrogen (Nitrate)Chlorides as Cl.Oxygen abs0 from Permanganate 4 hrs0 at 27 C.Turbidity in terms of SilicaColour, mm. brown 2ft. tube Burgess's TintometerHardness (Total)Hardness (Non-carbonate)pH ValuePhospate as PO4Silicate as S1O2Sulphate as SO4Fluoride as FMagnesium as MgElectrical Conductivity (gemmhos)
Hampton0.0200.0794.1261.300.413272687.70.859580.155550

Table: (b) Bacteriological after chlorination (water passing into supply)

(b) Bacteriological after chlorination (water passing into supply)

Description of the SamplePlate. count (average per millilitre) Colonies counted on agarColiform count Percentage samples negative in 100 ml.
37°C 20-24 hrs.ColiformE.Coli
Hampton8.299.61100.0