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60
wells. A summary of the results of the bacteriological and
chemical samples from these various sources follows. These waters
are not plumbo-solvent.
No new sources of supply were instituted by the Board during
1963 and there were no new important extensions of trunk mains
but a total length of 1,968 yards of service mains was laid during
the year. All new and repaired mains were disinfected with chlorine
before being brought in or restored to service and samples of water
collected from them were analysed to ensure that the water was up
to the level of quality normally supplied.
As well as being of the satisfactory quality indicated in the
tables, so far as is known the quantity has been adequate and the
pressure maintained in the mains. It was not necessary to take
action in respect of any form of contamination.
Three privately owned wells are in use supplying water for
commercial purposes. Six samples were taken from these wells.
On chemical examination they proved good, but one was not
altogether satisfactory on bacteriological grounds. A subsequent
sample proved to be sound.