London's Pulse: Medical Officer of Health reports 1848-1972
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Hints from the Health Department. Leaflet from the archive of the Society of Medical Officers of Health. Credit: Wellcome Collection, London
Surbiton 1963
[Report of the Medical Officer of Health for Surbiton]
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49.
ANNUAL TEST BAITING OP SEWERS.
| No.of Manholes baited. | Takes of Bait | Percentages of takes. | |
|---|---|---|---|
| Initial 1947/8 | 384 | 64 | 16.666 |
| Second 1948 | 160 | 13 | 8.125 |
| Third 1949 | 229 | 8 | 3.493 |
| Fourth 1950 | 250 | 9 | 3.600 |
| Fifth 1951 | 200 | 11 | 5.500 |
| Sixth 1952 | 201 | 7 | 3.487 |
| Seventh 1953 | 179 | 7 | 3.910 |
| Eighth 1956 | 162 | 10 | 6.173 |
| Ninth 1957 | 167 | 7 | 4.191 |
| Tenth 1958 | 156 | 10 | 6.410 |
| Eleventh 1959 | 129 | 2 | 1.542 |
| Twelfth 1960 | 182 | 14 | 7.704 |
| Thirteenth 1961 | 181 | 11 | 6.071 |
It has not been deemed necessary to carry out a full test
baiting of the sewer system since 1961, but, as shewn on
the previous page, treatment of the only known trouble-spots
continues.