| 31. | He also worked as Acting Chief of the Metropolitan Waterworks and Sewerage System Regulatory Office.
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| 32. | The installation of a sewerage system marks a milestone in the history of developing Chakar.
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| 33. | The company won contracts for railway rolling stock, a sewerage system, trams and agricultural machinery.
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| 34. | The major sewerage system for disposal of sullage is through septic tanks and public conveniences.
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| 35. | Some cities don't even have a sewerage system ."
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| 36. | In the 1880s it was bricked over as part of the emerging storm-water and sewerage system.
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| 37. | In the early 1950s, the town obtained a new waterworks, water mains and a sewerage system.
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| 38. | Further there are unsatisfactory conditions of sewerage systems.
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| 39. | This anomaly was attributed to the closure and replacement of cesspits by the modern sewerage systems.
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| 40. | Paris, London, and other large cities saw an investment in their sewerage system during the 1850s.
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