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29
SANITARY CIRCUMSTANCES OF THE BOROUGH.
Water.
(i) The whole of Greenford and Northolt is supplied by the
Rickmansworth and Uxbridge Valley Water Company with the
exception of five roads south of Whitton Avenue in the Perivale
Ward which are supplied by the Colne Valley Water Company.
The rest of the Borough is supplied by the Metropolitan Water
Board.
(ii) No samples were taken during the year from any pipe
supply either for bacteriological or chemical analyses.
During the year, at the request of the Minister of Health, a
survey of the wells with borings into the chalk was carried out.
The special report which was prepared is recorded below.
(iii) No plumbo-solvent action occurs in any of the water
supplies.
(iv) There was no action taken in respect of any form of
contamination.
(v) Water from public mains is supplied to 48,252 houses
witli a population of 185,970 (estimated to September, 1947).
SPECIAL REPORT OF THE MEDICAL OFFICER OF HEALTH
ON WATER OBTAINED FROM BORINGS INTO THE CHALK
IN THE BOROUGH OF EALING.
At the request of the Minister of Health a survey of the wells
with borings into the chalk has been recently carried out. These
wells which are twelve in number are all in private ownership
and are used in connection with factories. In only four instances
are they used for drinking purposes.
Samples have been taken of water from eight of these wells
which are in use and submitted for both chemical and bacteriological
examination and satisfactory results were obtained in each
case excepting one, where the supply was found to be polluted,
but after a series of samples, taken from various points of this
particular supply, the water from the bore was found to be good
both chemically and bacteriologically and it was found that
pollution was taking place in the pipe which delivers the water
into the tanks at the top of the building. Steps were taken to
sterilise the pipes and a subsequent sample was reported to be
satisfactory.
Attached are the particulars of each invividual well, a specimen
boring showing the various strata found and the results of chemical
and bacteriological examinations of eight of the wells.