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67
In connection with this matter the Borough Engineer has
kindly supplied the following information :—
"The Council exercises the control and sampling of trade
effluents under the provisions of the London County Council
(General Powers) Act, 1953. As a result of an additional Drainage
Inspector being appointed it has been possible to increase the
number of samples taken over previous years.
Premises discharging trade effluents to local sewers 320
New premises discharging trade effluent to local sewers 2
Premises added as result of further survey 11
Premises discharging trade effluents to L.C.C. sewers 65
Number of sewer connections inspected 248
Number of samples taken 230
Number of samples found satisfactory 184
Of the unsatisfactory samples, 11 were from premises of the
South Eastern Gas Board. In conjunction with the London County
Council's Scientific Adviser a series of tests were run at the Board's
premises to endeavour to establish the acceptable standards of
effluent to be discharged, with particular reference to the atmospheric
pollution within the sewers. The formal results of these
tests are still awaited, but an early indication is that the tests run
were by no means conclusive and disappointing in that it was difficult
to relate an atmospheric pollution within the sewer to the
volume and quality of effluent discharged.
The remaining unsatisfactory samples were found to be caused
by errors in operating manufacturing plant, misuse and lack of
maintenance of drainage systems. Remedial measures have been
taken by the firms concerned."
Wat"er Supply.—The whole of the Borough is supplied with
water by the Metropolitan Water Board which is a Statutory undertaking,
and the responsibility for its purity rests with that Authority.
There are 24,736 dwellings with direct connections to the Board's
mains.
During the year 240 water supply certificates were granted
under Section 95 of the Public Health (London) Act, 1936. Water
fittings have been amended, repaired or renewed in 260 cases.