View report page

66
One hundred and sixty-nine plans of drainage and other sani
tary works relating to existing and new buildings were examined
and approved.
Discharge of Trade Effluents into Sewers.—Under the provi
sions of the London County Council (General Powers) Act, 1953,
the Borough Engineer's Department consulted with various public
bodies and carried out a site survey from which a list of 351
premises was compiled where trade effluents are discharged to the
public sewer. A further survey of premises has increased the number
of premises likely to discharge trade effluents to a total of 372. Of
these, 65 connections are directly to sewers under the control of the
London County Council and will be dealt with by that authority,
under the provisions of the Act.
In connection with this matter the Borough Engineer has
kindly supplied the following information :—
Premises discharging trade effluent to local sewers 307
Premises discharging trade effluent to L.C.C. sewers 65
Number of sewer connections inspected 88
Number of samples taken 76
Number of samples found satisfactory 20
Some eleven of the unsatisfactory samples were from the
premises of the South Eastern Gas Board and negotiations are still
proceeding concerning discharge to the Tunnel Avenue sewers. In
conjunction with the London County Council's Scientific Adviser a
series of tests are to be run to establish the acceptable standards of
effluent to be discharged with particular reference to the atmospheric
pollution within the sewers.
The remaining unsatisfactory samples were found to be caused
by errors in operating manufacturing plant and lack of maintenance
of drainage systems. Remedial measures were taken by the firms
concerned.
Water 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 91 water supply certificates were granted
under Section 95 of the Public Health (London) Act, 1936. Water
fittings have been amended, repaired or renewed in 292 cases.