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 Edmonton]
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TO THE BOROUGH OF EDMONTON FOR THE YEAR 1963.
Hard ness (non carbonate) | PH Value | Phosphate as P04 | Silicate as Si02 | Surface Active Material as Manoxol OT | Sulphate as so4 | Natural Fluoride as F. | Magnesium as Mg. | Sodium as Na | Potassium as K | Elect rical Conductivity Micromhos |
---|---|---|---|---|---|---|---|---|---|---|
70 | 7.8 | 1.1 | 12 | - | - | - | - | - | - | 620 |
68 | 7.9 | 1.0 | 11 | - | - | - | - | - | - | 620 |
68 | 7.9 | 1.3 | 12 | 0.07 | 60 | 0.30 | 5 | 25 | 5.2 | 570 |
56 | 7.4 | - | - | - | - | - | - | 20 | 6.3 | 530 |
WATER EXAMINATION DEPARTMENT
AFTER TREATMENT | |||||
---|---|---|---|---|---|
Number of Samples | Agar plate count per ml. | Coliform count | E. coli count | ||
20-24 hours at 37°C | 3 days at 22°C | Per cent samples negative in 100 ml. | Per cent samples negative in 100 ml. | ||
256 | 3.9 | 100.0 | 100.0 | ||
256 | 5.0 | 100.0 | 100.0 | ||
1,930 | 14.4 | 99.43 | 99.43 | ||
69 | 0.1 | 4 | 100.0 | 100.0 |
JVO.