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19
Chemical Examination
104 samples of filtered water derived from the New River and
52 from River Thames derived water were taken for chemical
examination. All were found to be satisfactory.
The natural fluoride content of the two sources of supply,
namely, River Thames and New River, shows slight variation from
time to time. Samples collected at regular intervals show an average
of 0.25 parts per million.
SEWERAGE AND SEWAGE DISPOSAL
That part of the Borough north of Fortis Green is drained into
the East Middlesex main drainage system and the remainder of the
Borough's sewerage system joins the northern outfalls of the London
County Council's drainage system. The whole of the Borough is
thus adequately served.