London's Pulse: Medical Officer of Health reports 1848-1972

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Enfield 1966

[Report of the Medical Officer of Health for Enfield]

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TABLE 29

CERTIFICATION OF BLINDNESS AND PARTIAL SIGHT

Follow-up of Registered Blind and Partially Sighted Persons in 1966

Cause of Disability
CataractGlaucomaRetrolental FibroplasiaMyopiaOthers
(i) Number of cases registered during the year in respect of which Forms B.D.8 recommended:
(a) No treatment32123
(b) Treatment (medical, surgical, optical, or ophthalmic medical supervision)1118-730
(ii) Number of cases at (i)(b) above which on follow-up action:
(a) Have completed treatment1
(b) Treatment started, but not completed216525
(c) Awaiting treatment5123
(d) Refused treatment3
(e) Died or removed from the Borough11--1
(iii) Number of new cases registered as at 31st December, 19661420853
(iv) Total number of cases registered as at 31st December, 1966664

TABLE 30

WATER SUPPLY

Metropolitan Water Board

Chemical and Mineral Analysis

Average results in milligrams per litre where applicable
* Thames derived North of RiverNew River derivedHoe Lane Well derivedHadley Road Well derivedWaltham Abbey Well derived
Number of samples207104354
Albuminoid Nitrogen0087007100360-0500046
Ammoniacal Nitrogen00310027016001500-221
Nitrate Nitrogen395-5020101
Oxygen abs. from KMn04,1 260760-440320-38
4 hrs. at 27°C
Hardness (total) CaCO3289315419285294
Hardness (non-carbonate) CaCO378831594669
Magnesium as Mg54232721
Chloride as CI3236302325
Phosphate as P041.61.5
Silicate as SiO2710172519
Sulphate as SO468641598485
Natural Fluoride as F0.200.20
Surface-active material as Manoxol OT0.010.01---
Turbidity Units0.10.11.50.90.8
Colour (Burgess units)1591257
pH Value7.97.77.07.47.4
Electrical Conductivity (micromhos)570630760580570
* Ashford Common, Kempton Park, Hanworth Road and Barn Elms