The filtration of public water-supplies: Third edition, revised and enlarged.Hazen, Allen
Science
The filtration of public water-supplies: Third edition, revised and enlarged.
Hazen, Allen
Filters and filtration; Water-supply
Water used. Deaths from Deaths from
All Causes. Typhoid Fever.
Filtered Thames water only 19,501 125
Filtered Lea water only 21,334 167
Kent wells only 18,001 123
Thames and Lea jointly 18,945 138
Thames and Kent jointly 18,577 133
The population supplied exclusively from the Lea by the East London
Company is of a poorer class than that of the rest of London, and this
may account for the slightly higher death-rate in this section. Aside
from this the rate is remarkably uniform and shows no great difference
between the section drinking ground-water only and those drinking
filtered river-waters. The death-rate from typhoid fever is also very
uniform and, although higher than that of some Continental cities with
excellent water-supplies (Berlin, Vienna, Munich, Dresden), is very
low—lower than in any American city of which I have records.
In this connection, it was shown by the Registrar-General that there
is only a very small amount of typhoid fever on the watersheds of
the Thames and Lea, so that the danger of infection of the water as
distinct from pollution is less than would otherwise be the case. Thus
for the seven years above mentioned the numbers of deaths from typhoid
fever per million of population were only 105 and 120 on the watersheds
of the Thames and the Lea respectively, as against 176 for the whole of
England and Wales.
LONDON FILTERS, 1896.
Twenty-sixth Annual Report of the Local Government Board, pages 206-213.
Public-domain text, read in full here on John Shaqi.
Reviews
Reviews
No reviews yet
Be the first to share your thoughts on this work.
Elsewhere in the archive
Join the Discussion
Join the discussion
Sign in to leave a comment or review.
Sign InorCreate an account