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95
ENVIROMENTAL HEALTH
by S. R. Daly, LL.M., B.Sc., D.P.A.(Lond.), Barrister-at-Law
Chief Public Health Inspector.
Water Supply
The water supply of the Borough of Redbridge is provided
by two statutory undertakers, namely the Metropolitan
Water Board and the South Essex Waterworks Company and has
been of satisfactory quality and sufficient quantity during the
period under review.
The principal source of supply of the former is derived
from the River Lee and is treated at the Metropolitan Board's
Lee Bridge Works with a small addition of water from the Ferry
Lane Works and the Wanstead well. The population supplied
by the Metropolitan Board in Redbridge is 133,765, the supply
being made direct to houses in every case, there being no
stand pipe supply within the Borough. No new source of supply
was instituted in the area during 1965 nor has there been any
material change in the general supply system. 972 samples
were submitted to chemical and/or bacteriological examination.
The average fluoride content of these supplies is as follows:—
Wanstead Well 0,55 of a milligramme per litre F.
River Lee derived 0.25 of a milligramme per litre F.
The total distance of the Board's supply mains laid in the
Borough by the Board during 1965 was 266 yards.
The South Essex Waterworks Company on the other hand
derives its supply mainly from the River Stour and from deep
wells at Mill Road, Grove Road and Roding Lane. The General
Manager and Chief Engineer of the South Essex Waterworks
Company states that during 1965 7,867 chemical, bacteriological
and biological examinations were made at the Company's
Langham Laboratory, all of which indicated that the
supplies were wholesome. Some samples were also examined
for radioactivity. Samples from the wells situated in the Company's
supply area were also taken and analysed weekly and
samples were taken from houses in various parts of the supply
area for bacteriological examination, all of which proved
satisfactory. The fluoride content of the various supplies is
(0;25 p.p.m.
The following mains were laid in Redbridge during 1965:—
3 ins. 4 ins. 6 ins.
Yards 249 71 178