University of Twente Student Theses
Quality assessment and interrelations of water supply and sanitation: a case study of Yogyakarta City, Indonesia
Salendu, Belinda (2010) Quality assessment and interrelations of water supply and sanitation: a case study of Yogyakarta City, Indonesia.
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| Abstract: | Provision of quality urban infrastructure system has become a major concern in many developed countries. In the contrary to this, the quality aspect of providing water has been downplayed by the much focus put on access provision to these infrastructures. This is mostly the case of water supply provision and other basic infrastructures. The low quality of urban infrastructure such as water supply and sanitation may be detrimental to the environment leading unhealthy living conditions. The performance of one infrastructure may affect the other. Thus to say some of these infrastructures such as water supply and sanitation are interrelated. Understanding this integration and interrelation may therefore provide a better understanding on the importance of providing quality infrastructures. This research is aimed at understanding interrelation between water supply and sanitation by assessing the performance of sanitation infrastructures on the quality of water supply. The research was carried out in City of Yogyakarta, Indonesia particularly in the area near the river. The assessment of water quality was based on the people‟s perceptions about their drinking water with regards to the odor, taste and colour qualities both before and after flooding. The continuity of water supply was also assessed. A water supply index was then made from these indicators. Water quality tests (total coliforms and total dissolved solids) were also performed to assess the quality of the water quantitatively. The effect of the sanitation infrastructure on the water quality was then investigated by looking at the distance of water source to septic tank, river and the well depth in cases of groundwater use. Three main water sources (tap water from providers (PDAM), private well and communal well) were identified even though a section of the people bought sachet water for drinking purposes. Based on the water supply index from the users‟ perception, private wells were seen to be the best (index of 0.999) followed by communal wells (index of 0.878) then tap water from providers (index of 0.732). It was therefore no surprising most of the people used groundwater sources. A water quality test however showed higher pollutions in the groundwater as compared to tap water from providers. The perception of the user where they were reporting good taste, odor and colour qualities may therefore be misleading. Higher concentrations of total coliforms were observed in high dense areas and along the river as compared to lower dense areas. It was found that the distance to the river does not necessarily affect the occurrence of total coliforms in wells. These occurrences where about 44.1% explained by the distance of well to septic tank and the depth of the well. The distance of well to septic tank and its depth can therefore be regulated to reduce contamination of well water by total coliforms. The people could also be educated about the water quality of the different water sources. Purification method could also be explained to the people for much quality water. Keywords: interrelation water supply and sanitation, water quality assessment, water pollution. Keywords: interrelation water supply and sanitation, water quality assessment, water pollution |
| Item Type: | Essay (Master) |
| Faculty: | ITC: Faculty of Geo-information Science and Earth Observation |
| Programme: | Geoinformation Science and Earth Observation MSc (75014) |
| Link to this item: | https://purl.utwente.nl/essays/90757 |
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