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
Enfield 1968
[Report of the Medical Officer of Health for Enfield]
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TABLE 30
CERTIFICATION OF BLINDNESS AND PARTIAL SIGHT Follow-up of Registered Blind and Partially Sighted Persons in 1968
| (a) No treatment | 3 | 2 | — | 1 | 22 |
| (b) Treatment (medical, surgical, optical or ophthalmic medical supervision) | 18 | 13 | - | 2 | 52 |
| (ii) Number of cases at (i) (b) above which on follow-up action : | |||||
| (a) Have completed treatment | 2 | — | — | — | — |
| (b) Treatment started, but not completed | 8 | 10 | — | 1 1 | 49 |
| (c) Awaiting treatment | 6 | 1 | — | 2 | |
| (d) Refused treatment | 1 | 1 | — | — | — |
| (e) Died or removed from the borough | 1 | 1 | — | _ | 1 |
| (iii) Number of new cases registered during 1968 | 21 | 15 | — | 3 | 74 |
| (iv)Total number of cases registered as at 31st December, 1968 718 | |||||
TABLE 31 WATER SUPPLY Metropolitan Water Board Chemical and Mineral Analysis
| Average Results in milligrams per litre where applicable | |||||
|---|---|---|---|---|---|
| Thames Derived North of River | New River Derived | Hoe Lane Well Derived | Hadley Road Well Derived | Waltham Abbey Well Derived | |
| Number of Samples | 207 | 104 | 4 | 4 | 4 |
| Albuminoid Nitrogen | 0019 | 0.013 | 0.110 | 0.145 | 0.170 |
| Ammoniacal Nitrogen | 0.085 | 0.063 | 0.034 | 0.023 | 0.040 |
| Nitrate Nitrogen | 3.8 | 4.8 | — | — | 0.2 |
| Oxvgen abs. from KMnO,, 4 hrs. at 27°C | 119 | 0.67 | 0.28 | 0.11 | 0.18 |
| Hardness (total) CaCOi | 287 | 306 | 438 | 272 | 286 |
| Hardness (non-carbonate) CaC03 | 78 | 76 | 192 | 36 | 76 |
| Magnesium as Mg | 5 | 5 | — | — | — |
| Sodium Potassium as Na | 23.4 | 29.9 | — | — | — |
| Sodium Potassium as K | 5.2 | 5.2 | — | 22 | — |
| Chloride as CI | 32 | 40 | 32 | 27 | |
| Phosphate as PO4 | 1.9 | 1.7 | — | — | — |
| Silicate as SiO2 | 9 | 10 | — | — | — |
| Sulphate as SO4 | 62 | 66 | — | 1.20 | — |
| Natural Fluoride as F | 0.30 | 0.30 | 0.70 | 0.75 | |
| Surface-active material as Manoxol OT | 0.02 | 0.01 | -_ | -_ | — |
| CO2 | — | — | - | — | — |
| Turbiditv units | 0.1 | 01 | 0.4 | 0.3 | 0.5 |
| Colour (Burgess units) | 14 | 7 | 9 | 5 | 8 |
| pH Value . | 8.0 | 7.9 | 7.3 | 7.4 | 7.5 |
| Electrical Conductivity (micromhos) | 570 | 630 | 770 | 570 | 550 |