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On very rare occasions complaints have been received of a sandy
deposit in water collected from the taps of domestic premises. On
investigation the Water Company have maintained that this originated
from a sedimentary deposit in the pipes which is flushed away at
times when great demand is made. It is harmless, and, whilst being
aesthetically unacceptable, is none the less incapable of causing any
injury.
Bacteriological examinations of the water taken from delivery
points in the Borough, both by the Colne Valley Water Company and
by the Department, have invariably proved the supply to be of
excellent quality. Little can be done to change the chemical quality
of the water, which is satisfactory for a potable supply, but, for
information, a typical analysis is included.

In the last report comment was made on the success achieved
by the Colne Valley Water Co. in reducing, over the years, the hardness
of water supplied to the Borough. I have included in this year's
report a table showing the mean hardness figure for the past two
years.
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