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22
Sewer Flushing.— Careful attention has been paid to the flushing
of the sewers and culverts, the quantity of water used for this
purpose during the last three years being as under : —
1896. 1897. 1898.
Gallons 19,866,000 18,765,000 24,084,000
The fortnightly flushing of the sewers in the Haringey District
instead of monthly, as hitherto, accounts to a large extent for the
increased quantity of water used during the past year. Care is taken
that the brick culverts and open watercourses are kept in a cleanly
condition, and all cases of pollution are followed up closely and disconnected.
Gullies.— Wherever old gullies, mostly of brick construction and
untrapped, have been found defective they have been replaced with
stoneware pot gullies with proper water seal.
Sewers.— The length of new sewers laid and reconstructed
during the year is about 5½ miles, compared with 4 2/3 miles during the
corresponding period of 1897. These figures are made up as follows :—
1897. 1898.
Yds. Yds.
New foul-water sewers 2680 8975
New surface-water sewers 4860 5025
7540 9000
Sewers reconstructed 670 620
Total ... 8210 say 4 2/3 miles. 9620 say 5½ miles.
Sewer Ventilation.— The erection of vertical cast-iron ventilating
shafts up the flank walls of buildings or in other suitable positions
has been continued during the year, the total number erected