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given by the Port Health Authority and the meat and/or other food is
examined at the consignees premises in Harrow.
Another matter of interest was fowl pest. It will be known that fowl
pest was widespread throughout the country during 1970 and during the
year, pursuant to the Diseases of Animals Acts, three suspected cases
were investigated. The enquiries were made in conjunction with the
veterinary officers of the Animal Health Division of the Ministry of
Agriculture, Fisheries and Food and action appropriate to the circumstances
was taken to prevent the spread to other flocks.
WATER SUPPLY
Apart from a small area in the extreme south-west part of the district
which is supplied by the Rickmansworth and Uxbridge Valley Water
Company, the Borough is supplied by the Colne Valley Water Company.
Nearly all the water supplied by them is obtained from a series of wells
fed from gathering grounds in the Chilterns.
The supply has been satisfactory in quantity and quality and no
adverse reports were received.
Throughout the year samples were taken by the Colne Valley Water
Company and in every case the report received was satisfactory. In
addition, eleven samples were taken by the Department—all were
satisfactory.
Two samples were also taken of water from the deep boring at
Messrs. Braziers, Kenton Lane, where the supply from this source is used
for cooling and for other purposes within the dairy. Again, the results in
each case were satisfactory.
The following is a copy of the report received on a sample submitted
for chemical analysis.
Chemical Results in parts per million
Suspended Matter Absent
Appearance Clear and Bright
Colour Less than 5 Hazen Units
Taste Normal
Odour Absent
Total Solid Residue dried at 105°C 322.
Chlorides as Chlorion 37
Nitrate Nitrogen 12
Nitrite Nitrogen Absent
Ammoniacal Nitrogen 0.10
Albuminoid Nitrogen 0.03
Oxygen Absorbed, 4 hrs. at 27°C 0.12
Total Hardness as CaCO3 170
Non-carbonate hardness as CaCO3 77
Alkalinity as CaCO3 93
Poisonous Metals Absent
pH 7.5