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inlets for fresh air sometimes also discharge foul air, in consequence
of which many of them have been closed in, and extra
upcast shafts erected at points of vantage in their place.
During the past twenty years no drains of any house have
been permitted to be connected with the sewers unless they have
been provided with a chamber containing a trapped interceptor
just within the boundary adjoining the street or road.
There are very few houses which are not near a sewer, so that
fortunately only a few cesspools now exist.
In the District there are now 49 miles 292 yds. of sewage
sewers, and 45¼ miles of surface-water sewers, and no less than
50½, miles of these have been constructed during the past twelve
years.
Sewers.—During the past year a total of 3,645 yards of
new sewers were laid as follows : —
Sewage sewers 1,944 yards.
Surface-water sewers 1,701 „
Total 2 miles 125 „

The following Private Streets were Made-up in accordance
with the 150th Sec. Public Health Act, 1875, during
the year, and will be taken over by the Council.