Hints from the Health Department. Leaflet from the archive of the Society of Medical Officers of Health. Credit: Wellcome Collection, London
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 |