The drainage and sewerage of Bombay : being a report submitted to the Bench of Justices of that city / by their Executive Engineer Hector Tulloch.

  • Tulloch, Hector.
Date:
1872
Catalogue details

Licence: Public Domain Mark

Credit: The drainage and sewerage of Bombay : being a report submitted to the Bench of Justices of that city / by their Executive Engineer Hector Tulloch. Source: Wellcome Collection.

    31/112 (page 23)
    Taking tlie population at 816,000, he was of opinion that the sewers should be made large enougli to carry away the sewage of a prospective population of about double this number, or of one and a half million people. He Avas opposed to the separation of rainfall and sewage. He thought such a system impracticable. His proposition, therefore, was to provide sewers capacious enough to carry away both; but, considering that so large a portion of the town lay at a very low level, he proposed to let as much of the sewage and drainage as possible escape into the sea by gravitation, and to pump up only the remainder, or that portion which could not by any means be disposed of in that way. For eight months of the year, while there was no rain, all the sewage was to gravitate towards Colaba, where it was to be pumped up into reservoirs, and discharged into the sea at high tide. But during the monsoon the high parts of the town, viz. Mazagon, the district about Doongre Coolee Street, the Fort, the Esplanade, Sonapore, and Chowpatti, were to be cut off from the main-sewer running to Colaba, and the drainage and sewage from these districts were to be dis- charged into the harbour and Back Bay. The engines at Colaba during the monsoon were thus to have pumped the sewage and drainage of only the low districts about Bholesh- war and Commatteepoora. Mr. Aitken did not think that the sewage discharged into the harbour and Back Bay during the monsoon would be a nuisance. He was of opinion that it would be so diluted that all chance of its proving obnoxious would be destroyed. With the object of placing his main-sewer as high as possible, and in order to avoid having to pump more than necessary, Mr. Aitken thought it was essential to the proper drainage of Bombay that the very low-lying district enclosed by the Bellasis Bead, the Duncan Eoad, the Girgaum Back Road, and the Breach Candy Road, should be raised by filling up the area (150 acres) with earth three feet deep. He