[Report 1941] / Medical Officer of Health, Bolton County Borough.

  • Bolton (Greater Manchester, England). County Borough Council.
Date:
1941
Catalogue details

Licence: Attribution 4.0 International (CC BY 4.0)

Credit: [Report 1941] / Medical Officer of Health, Bolton County Borough. Source: Wellcome Collection.

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    Miscellaneous Examinations. 10 Waters. 1 Ice Cream. 3 Urines. 24 Swabs for Anthrax (Cattle and Sheep). 20 Bath Waters. 8 Milk Bottles and washings. 3 bleach Ointments. Examinations for the Waterworks Committee. Routine water examinations 691 Of the above 691 samples, 221 were filtered waters sampled at the Filter Stations. These gave the following results;— Ag.^R Count (Total No. of organisms of all types per ml. growing on Agar at 37° C.) : Average Agar Count per 1 ml. ... ... ... 8 B. CoLi. Standards adopted for filtered water at filter stations :— Number of B. Coli per 100 mils. 0 Good. 1— 2 Tolerable. 2— 4 Unsatisfactory. Above 4 Bad. No. of samples with 0 Typical B. No. of samples with 1 Typical B. No. of samples with 2 Typical B. No. of samples with 3 Typical B. No. of samples with 4 Typical B. Coli per 100 mils. ... 209 or 94 58% Coli per 100 mils. ... 4 or 1 81% Coli per 100 mils. ... 2 or 0 90% Coli per 100 mils. ... 1 or 0 45% Coli per 100 mils. ... 5 or 2 26% Cl Welchii. ... 211 or 95-48% ... 10 or 4-52% Negative in 50 mils. Positive in 50 mils.