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The results are summarised as follows:—
Grade 1 38 53%
„ 2 21 29%
„ 3 10 14%
„ 4 3 4%
72 100%
The three samples placed in grade 4 were of supplies
originating in two other Boroughs, and details of the results
were transmitted to the respective Councils. Subsequent
samples were all grade 1.
GENERAL SANITATION
Factories and Workplaces. The number of inspections
made to premises registered under the Factories Act, 1937, was
195. Defects relating to sanitary conveniences, ventilation and
other sanitary matters were dealt with at 57 premises. The
table on page 48 gives details of action taken during the year.
Water Courses. Regular inspections were made of the
water courses in the district, particularly of the River Wan die,
and Beverley and Pyl Brooks for the purpose of detecting pollutions.
Mosquitoes. A number of complaints were received from
residents and spraying of water courses and ditches was
carried out particularly in the vicinity of the Council's recreation
grounds and open spaces during the breeding season.
Morden Hall Park continues to be an intermittent breedingground
due to occasional flooding from the River Wandle.
Proposals were put forward during the year for raising the
level of the Park by utilising spent screenings from the Refuse
Works. Although this will undoubtedly help, no final relief
can be expected until the level is raised to prevent the possibility
of any part being flooded during the breeding season.
Rodent Control. 282 complaints of infestation were
received during the year and as a result of the inspections of
926 premises, 300 of them were found to be infested. The
control method recommended by the Ministry of Agriculture
43