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
City of Westminster 1966
[Report of the Medical Officer of Health for Westminster, City of]
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Table 13.—Rodent Control
| Complaints of rats received | 980 |
| Complaints of mice received | 1,028 |
| Total premises involved | 2,008 |
| (Including properties inspected for reasons other than notification) | |
| Premises rid of rats | 1,024 |
| Premises rid of mice | 1,055 |
| Total premises disinfested | 2,079 |
| Inspections by Public Health Inspectors and Rodent Officers to such places | 3,237 |
| Intimation notices served | _ |
| Statutory notices served | — |
Table 14.—Chemical Examination of Water Supplied to
City of Westminster—Average
Results Milligrammes per Litre (unless otherwise stated)
| Analysis data | Source of Supply | |
|---|---|---|
| Stoke Newington | All Thames derived | |
| No. of samples | 52 | 363 |
| Ammoniacal Nitrogen | 0.038 | 0.030 |
| Albuminoid Nitrogen | 0.069 | 0.088 |
| Nitrate | 5.4 | 4.1 |
| Chlorides as CI. | 36 | 32 |
| Oxygen abs. from Permanganate 4 hrs. at 27C | 0.74 | 1.26 |
| Turbidity units | 0.1 | 0.1 |
| Colour m.m. brown 2 ft. Tube Burgess's Tintometer | 9 | 15 |
| Hardness (total) | 315 | 285 |
| Hardness (non-carbonate) | 82 | 78 |
| p.H. Value | 7.8 | 7.9 |
| Phosphate as P04 | 1.4 | 1.7 |
| Silicate as Si02 | 10 | 8 |
| Sulphate as S04 | 64 | 64 |
| Natural Fluoride as F | 0.20 | 0.20 |
| Magnesium as Mg. | 4 | 5 |
| Sodium as Na | 27.8 | 24.5 |
| Potassium as K | 4.7 | 4.9 |
| Surface active material as manoxol | 0.01 | 0.01 |
| Electrical Conductivity (microhms) | 630 | 570 |