London's Pulse: Medical Officer of Health reports 1848-1972

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Surbiton 1948

[Report of the Medical Officer of Health for Surbiton]

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3. SEWERS.
Test baiting of the Corporation's sewers was completed during the early part of the year. Areas
1,2,3 and 4, were tested during 1947. These"areas" are just a convenient geographical division
of the Borough for the purposes of this particular work.

Result of tests:-

AreaNumber of Manholes test baitedComplete takesPartial takesNo takes.
5232219
68322358
7191-18
8686-62
9565-51
249365208

The above results may be considered as very satisfactory because whereas on the first treatment 77 of the
manholes treated, were found to be infested, the second treatment only revealed 14 infested manholes, a
reduction of 82%.

In April, the First Initial Treatment of the sewers was carried out, followed by the Second Initial Treatment in July, the results of the two treatments being as follows:-

1st Initial Treatment2nd Initial Treatment.
Area.No. Manholes pre-baitedNo.Manholes showing takes of pre-baitNo. Manholes showing takes of poison baits.No.Manholes pre-baitedNo.Manholes showing takes of pre-bait.No.Manholes showing takes of poison baits.
1------
22397862
32311111
430951232
5101-1--
6923192933
73-----
818135131-
91913413--
218773177148