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WATER SUPPLY
I am indebted to Dr. E. Windle Taylor, Director of Water
Examination of the Metropolitan Water Board, for the following
information.
The supply for Hornsey area has been satisfactory both in quantity
and quality during the year 1954. During this year the area was supplied
from two main sources:—
(a) River Thames-derived water stored in Littleton and Walton
reservoirs and treated at the Board's filtration works at
Kempton Park and Hampton.
(b) Water from the New River derived from the River Lea and from
wells and treated at the Board's filtration works at Stoke
Newington.
Samples are collected on five days of every week, or more often if
required, at each stage of the purification process as well as samples
from the distribution system, and tests include physical, chemical and
micro-biological examination.
All new and repaired mains are chlorinated before being restored to
use and samples of water from them are tested to ensure that its quality
is up to that normally supplied.
The water supplied to this area is not plumbo-solvent.
The water supply is in all cases direct to dwelling houses; none is
supplied by means of a stand pipe.
Chemical Examination
1,585 samples of filtered water derived from the River Thames and
225 from the New River were taken for chemical examination. All
were found to be satisfactory. The average fluoride content in water
supplied to Hornsey is 0.15 parts per million.