Addressing water stress through wastewater reuse: Complexities and challenges in Bangalore, India

Jamwal, Priyanka and Thomas, Bejoy K and Lele, Sharachchandra and Srinivasan, Veena (2014) Addressing water stress through wastewater reuse: Complexities and challenges in Bangalore, India. In: Proceedings of the Resilient Cities 2014 congress. Resilient Cities . ICLEI – Local Governments for Sustainability, Bonn, Germany.

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Wastewater reuse is an important adaptation option for mitigating water stress in rapidly growing urban centres. But, wastewater reuse is easier said than done, particularly in developing countries. The task becomes even more challenging when one takes a basin-level perspective. We illustrate these challenges by studying the Vrishabhavathy River in Bangalore, India, which carries almost half of the city’s wastewater. First, we find that the sewage treatment plant (STP) located on this river does not function efficiently and no positive impact of effluent discharge on river water quality was observed. Second, while the Sewerage Board has implem ented conventional centralized sewage treatment and proposed its expansion and even larger scale projects, decentralized wastewater treatment, advocated by many civil society groups, may be more cost effective. Options at all scales, however, face several institutional challenges in implementation. Third, while untreated wastewater is a health hazard for downstream farmers using this water for irrigation, substantial wastewater recycling upstream would have a negative impact on their livelihoods by reducing the quantity of water available for irrigation. In addition, as the Vrishabhavathy is a tributary of the inter-state river Cauvery, reduced flows might impact on inter-state water sharing commitments complicating matters further. Realizing the potential of wastewater reuse in Bangalore will thus require techno-institutional integration and thinking at a basin scale

Item Type: Book Section
Additional Information: Copyright of this article belongs to ICLEI
Uncontrolled Keywords: Wastewater reuse and recycling, Treatment plant efficiency, Decentralized wastewater treatment, Downstream impacts
Subjects: C Publications by ATREEians > H Book Chapters
Divisions: Publications by ATREEians > Book Chapters
Depositing User: The Library Officer
Date Deposited: 06 Dec 2016 05:40
Last Modified: 22 May 2019 10:52

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