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Additional Public Health Inspector.
+ Roy W. Pursglove, M.A.P.H.I.
Clerk.
Miss Marjorie Runtz.
Rodent Operative.
J.C. Mace.
Public Analyst. J.H. Hamence, Ph.D. , M.Sc., F.R.I.C.
Deputy Public Analyst. P.S. Hall, B.Sc. , P.R.I.C.
+ Holds the special qualification as Inspector of Meat and other Poods
under examination of the Royal Society of Health.
WATER SUPPLY.
The major portion of the district is supplied with water from the mains
of the Barnet District Water Company, the remainder, consisting of the
western extremities, being served by the Colne Valley Water Company.
All water supplied to the district is chlorinated, both Companys
employing trained laboratory staff who take regular samples of water for
examination at all stages of its treatment.
During the year, the Barnet District Water Company's staff examined a
total of 1 ,949 samples,of which 1,694 were bacteriological and 255 chemical.
Of the bacteriological samples, 1 ,352 were representative of supply, and
every one was found to be free from Type I B. Coli in 100 ml. quantities.
This figure of 100/2 purity has been equalled only on one previous occasion,
in 1957.
The Company submitted 99 samples for investigation, both chemical and
bacteriological, by an independent laboratory. Every treated water sample
so examined proved likewise to be free from Type I B. Coli.
It is to be noted that rainfall for the year was well below average.
At the North Minims Pumping Station a fall of 21.86" was recorded, this
quantity being only 69.9% of that recorded at North Mimms for the previous
year, and 14.9% below the average, for a twenty-two year period, of 25.66".
It was not, however, found necessary to impose any restrictions on the use of
water.