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 for Enfield]
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ENVIRONMENTAL HEALTH
Accumulation of Refuse | 160 |
Bees | 49 |
Blocked or defective drains | 1,851 |
Dampness in premises | 166 |
Defective water-closets | 390 |
Defective water fittings | 26 |
Defective roofs | 86 |
Disinfection and disinfestation | 11 |
Improvement grants | 691 |
Insanitary or defective conditions of premises | 410 |
Insect infestations | 231 |
Noise nuisance | 78 |
Pigeons | 94 |
Rats or mice | 2,244 |
Scabies | 11 |
Smoke nuisance and Clean Air inquiries | 226 |
Squirrels | 36 |
Unsatisfactory housing conditions including overcrowding | 82 |
Unsound food | 111 |
Verminous premises | 125 |
Wasps | 590 |
Miscellaneous | 844 |
TOTAL | 8,512 |
Average Results in milligrams per litre where applicable | |||||
---|---|---|---|---|---|
Thames Derived | New River Derived | Hoe Lane Well Derived | Hadley Road Well Derived | Waltham Abbey Well Derived | |
Number of Samples | 364 | 104 | 4 | 4 | 4 |
Ammoniacal Nitrogen | 0.029 | 0.017 | 0.089 | 0.140 | 0 190 |
Albuminoid Nitrogen | 0.084 | 0.063 | 0.027 | 0.018 | 0.040 |
Nitrate Nitrogen | 6.1 | 6.4 | 0.3 | 0.3 | 0.2 |
Oxygen abs. from KMnO4 4 hrs. at 27°C. | 1.04 | 0.60 | 0.23 | 0.14 | 0.33 |
Hardness (total) CaCO3 | 281 | 302 | 438 | 278 | 273 |
Hardness (Non-carbonate) CaCO3 | 90 | 84 | 191 | 51 | 66 |
Magnesium as Mg. | 5 | 5 | - | - | - |
Sodium as Na. | 23.5 | 30.3 | - | - | - |
Potassium as K | 5.1 | 5.2 | - | - | - |
Chloride as CI | 34 | 42 | 28 | 22 | 27 |
Phosphate as PO4 | 2.3 | 1.8 | - | - | - |
Silicate as SiO2 | 10 | 9 | - | - | - |
Sulphate as SO4 | 64 | 62 | - | - | - |
Natural Fluoride as F. | 0.15 | 0.20 | 0.40 | 1.10 | 0.65 |
Surface-active materials as Manoxol OT | 0.02 | 0.02 | _ | _ | _ |
Turbidity units | 0.1 | 0.1 | 0.6 | 0.1 | 0.2 |
Colour (Burgess units) | 13 | 9 | 11 | 6 | 6 |
pH Value | 7.8 | 7.8 | 7.1 | 7.2 | 7.4 |
Electrical Conductivity (Micromhos) | 580 | 630 | 780 | 550 | 550 |