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 Feltham]
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Hardness:
Total 280 Carbonate (Temporary) | 205 |
Non-carbonate (Permanent) | 75 |
Nitrogen in Nitrates | 4.4 |
Nitrogen in Nitrites | Absent |
Free Ammonia | 0.016 |
Oxygen absorbed in 4 hrs. at 27 °C | 1.1 |
Albuminoid Ammonia | 0.084 |
Residual Chlorine | Absent |
Metals | Absent |
Bacteriological
Number of
Colonies developing
on
Agar per c.c. 1 day at 37°C 2 days at 37°C 3 days at 20°C
or ml. in 4 7 2
Presumptive Coliform Reaction Absent from 100 ml.
Bact. coli. Absent from 100 ml.
Cl. welchii Reaction Present in 100ml. Absent from 10 ml.
This sample is clear and bright in appearance, has
a reaction on the alkaline side of neutrality and is free
from metals. The water is hard in character but
its hardness and its content of mineral and saline constituents
in solution are not excessive. It is of satisfactory
organic quality and of a high standard of bacterial
purity.
These results are indicative of a water which is pure
and wholesome in character and suitable for drinking
and domestic purposes.
3. The water supplied has no plumbo-solvent action
but samples are tested for presence of metals.
4 No action has been required in respect of contamination
of the water. All water is chlorinated before
distribution.
5. With the exception of a few outlying cottages, all
the houses in the area are supplied from the public
water mains. Only a very limited number of houses are
supplied by standpipes common to two or more houses,
the vast majority being supplied direct. Population
supplied with water from standpipes is approximately
70.