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
City of London 1938
[Report of the Medical Officer of Health for Port of London]
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| Date. 1938. | Sample. | Result of Analysis. | Action taken. |
|---|---|---|---|
| Mar. 4 | ss. "Llanstephan Castle." From Ice water tap at Gun port door after passing through filter. (Genoa water.) | Condition of sample—Bright and Clear. Slight deposit. | See Special Report, page 19 |
| Number of micro-organisms developing on Yeastral agar (aerobically) at 68° F. (3 days) averaged 2,040 per c.c. | |||
| Number of micro-organisms developing on Yeastral agar (aerobically) at 98° F. (48 hours) averaged 1,000 per c.c. | |||
| Bacillus Coli absent from 50 to 0.001 per c.c. of sample. | |||
| Coliform organisms—B.Welchi not present. Streptococci not present. | |||
| Water precipitated and plated for typhoid group— negative. | |||
| Remarks—The bacterial count is too high to allow of this water being passed as fit for drinking purposes. | |||
| „ 5 | ss. "Llanstephan Castle." From No. 4 Starboard D.B. (not filtered). (Laurenco Marques water.) | Condition of sample—Cloudy, opalescent. Definite deposit. | Ditto. |
| Number of micro-organisms developing on Yeastral agar (aerobically) at 68° F. (3 days) averaged 593 per c.c. | |||
| Number of micro-organisms developing on Yeastral agar (aerobically) at 98° F. (48 hours) averaged 579 per c.c. | |||
| Bacillus Coli absent from 50 to 0.001 per c.c. of sample. | |||
| Coliform organisms—B.Welchi not present. | |||
| Streptococci not present. | |||
| Water precipitated and plated on McConkey— negative for typhoid group. | |||
| Remarks—Poor quality water. The bacterial count is high but the absence of pathogenic organisms such as B.Coli, Streptococci, &c., would allow of it being passed for drinking purposes. | |||
| „ 5 | ss. "Llanstephan Castle." From tap on boat deck after passing through filter. (Genoa water.) | Condition of sample—Bright and clear. Number of micro-organisms developing on Yeastral agar (aerobically) at 68° F. (3 days) averaged 5,400 per c.c. | Ditto |
| Number of micro-organisms developing on Yeastral agar (aerobically) at 98° F. (48 hours) averaged 1,540 per c.c. | |||
| Bacillus Coli absent from 50 to 0.001 per c.c. of sample. | |||
| Coliform organisms—B.Welchi not present. Streptococci not present. | |||
| Water precipitated and plated on McConkey— negative for typhoid group. | |||
| Remarks—The bacterial count is too high for this water to be passed as fit for drinking water. | |||
| „ 7 | ss. "Llanstephan Castle." Sample of water and sediment from filter. | Condition of sample—Dirty brown water with about 1 inch of sand deposit at bottom. | Ditto. |
| Number of micro-organisms developing on Yeastral agar (aerobically) at 68° F. (3 days) averaged 172,000 per c.c. | |||
| Number of micro-organisms developing on Yeastral agar (aerobically) at 98° F. (48 hours) averaged 82,000 per c.c. | |||
| Bacillus Coli absent from 50 to 0.001 per c.c. of sample. | |||
| Coliform organisms—B.Faecalis alkaligenes isolated from 10 c.c. of water. | |||
| B. Pyocaneous isolated from 5 c.c. of water. B.Welchi present in 10 c.c. of water. | |||
| McConkey plates—negative for typhoid and dysentery group. | |||
| Remarks—The bacteriological findings indicate an unsatisfactory condition. |