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 1972
Report of the Medical Officer of Health
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Table 15 — Rodent Control
| 1972 | 1971 | |
|---|---|---|
| Complaints: | ||
| Complaints of rats received | 436 | 449 |
| Complaints of mice received | 2,859 | 2,815 |
| Total premises involved | 3,295 | 3,264 |
| Infestations treated by Council's staff: | ||
| (including properties inspected for reasons other than notification) | ||
| Premises rid of rats | 439 | 451 |
| Premises rid of mice | 2,871 | 2,802 |
| Total premises disinfested | 3,310 | 3,253 |
| Inspections by Public Health Inspectors and visits by Rodent Officers to such places | 3,866 | 3,782 |
| Notices: | ||
| Intimation notices served | 6 | - |
| Statutory notices served | 22 | 13 |
Table 16 — Chemical Examination of Water Supplied to City of Westminster — Average Results
Milligramms per litre (unless otherwise stated)
| Analysis Data | Source of Supply | |
|---|---|---|
| Stoke Newington | R. Thames -Derived | |
| Ammoniacal Nitrogen | 0.02 | 0.031 |
| Albuminoid Nitrogen | 0.055 | 0.069 |
| Nitrate Nitrogen | 7.8 | 6.9 |
| Oxygen abs. from KMn02 4 hrs. at 27°C | 0.70 | 1.06 |
| Hardness (total) CaC03 | 308 | 274 |
| Hardness (non-carbonate) CaC03 | 78 | 82 |
| Magnesium as Mg | 5.5 | 5 |
| Sodium as Na | 28.8 | 24.5 |
| Potassium as K | 5.1 | 5.5 |
| Chloride as CI | 41 | 35 |
| Phosphate as PO4 | 2.2 | 2.8 |
| Silicate as Si02 | 10 | 10 |
| Sulphate as SO4 | 52 | 58 |
| Natural Fluoride as F | 0.15 | 0.15 |
| Surface-active material as Manoxal OT | 0.02 | 0.02 |
| Turbidty units | 0.1 | 0.1 |
| Colour (Burgess units) | 9 | 13 |
| pH value | 7.9 | 7.9 |
| Electrical Conductivity (microhms) | 650 | 570 |