As per the 2017 global reports, 63 million Indians are living in rural areas without access to the safe drinking source of water. Access to the safe drinking water was declared as a human right by the United Nations but remains a challenge for India. Due to increase in demand of water, 30% of urban and 90% of rural households completely depend on untreated surface or groundwater, which causes serious health issues. It is estimated that 21% of communicable diseases in India are water related. These problems have raised concern on alternative, sustainable treatment solutions to manage pollution of source of water and to continue the supply of safe drinking water to the community. Many organizations and universities in India have been working to tackle the access to safe water problems with the novel approaches. In this context, a natural filtration technique, river bank filtration (RBF) is one of the alternatives which is proved to be cost-efficient technology for providing safe drinking water The crucial step in the development of River Bank Filtration project is site selection. However, site selection for RBF using conventional methods are costly, time consuming and restricted to small area. This study highlights the use of geospatial technology to develop the site suitability for river bank filtration locations based on a case study in Tungabhadra river stretch between Mudenur and Halavagalu villages. Though several researches have carried out investigation on site selection for RBF, this is the first attempt to use geospatial technology in particular. The crucial parameters which influence site suitability for RBF are hydrology, hydrogeology, water supply, water quality, land use/land cover etc. The spatial maps were prepared using these parameters and weighted overlay analysis was done after assigning weights to the spatial maps in the GIS environment. The developed site suitability map shows the villages namely Halavagalu, Nitturu, Konnatambigi, Somlapur, Nitturubasapuram, Yellapur, Hirebidri and some parts of Udgatti, Airani, Tavaragundi areas were found to be suitable for implementing the RBF.

中文翻译：

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印度通加巴德拉流域使用地理空间技术的 RBF 场地适宜性

根据 2017 年的全球报告，6300 万印度人生活在农村地区，无法获得安全的饮用水源。获得安全饮用水被联合国宣布为一项人权，但对印度来说仍然是一个挑战。由于对水的需求增加，30% 的城市和 90% 的农村家庭完全依赖未经处理的地表水或地下水，这导致了严重的健康问题。据估计，印度 21% 的传染病与水有关。这些问题引起了人们对替代的、可持续的处理解决方案的关注，以管理水源污染并继续向社区提供安全的饮用水。印度的许多组织和大学一直致力于通过新颖的方法解决获得安全用水的问题。在这种情况下，作为一种天然过滤技术，河岸过滤 (RBF) 是一种替代方案，已被证明是提供安全饮用水的经济高效技术。河岸过滤项目开发的关键步骤是选址。然而，使用传统方法选择 RBF 的站点成本高昂、耗时且仅限于小区域。本研究基于 Mudenur 和 Halavagalu 村庄之间的 Tungabhadra 河段的案例研究，强调了使用地理空间技术来开发河岸过滤位置的场地适宜性。尽管已有多项研究对 RBF 的选址进行了调查，但这是首次尝试使用地理空间技术。影响 RBF 场地适宜性的关键参数是水文、水文地质、供水、水质、土地利用/土地覆盖等。空间图是使用这些参数制作的，并在为 GIS 环境中的空间图分配权重后进行加权叠加分析。开发的场地适宜性地图显示，Halavagalu、Nitturu、Konnatambigi、Somlapur、Nitturubasapuram、Yellapur、Hirebidri 等村庄以及 Udgatti、Airani、Tavaragundi 地区的部分地区被发现适合实施 RBF。