| 21. | The purpose : to modernise its water and sewerage system.
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| 22. | Shortly thereafter, work began on the drainage and sewerage systems.
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| 23. | This technology had a profound impact internationally in developing modern drainage and sewerage systems.
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| 24. | It did not have a mains sewerage system until 2005.
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| 25. | Works on the sewerage system began in 1899 in Upminster village and Corbets Tey.
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| 26. | The company also constructed canals for irrigation, ports and harbours, and water and sewerage systems.
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| 27. | The sewerage system was inadequate and drainage was poor.
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| 28. | In the village, there is a drinking water supply, but there is no sewerage system.
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| 29. | The remaining sewerage system for disposal of sullage is through septic tanks and public conveniences.
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| 30. | Virtually all households have running water and sewerage systems.
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