DOMINANT FACTORS STUDY OF COLIFORM BACTERIA CONTAMINATION IN SHALLOW GROUNDWATER AT YOGYAKARTA CITY (CASE STUDY: TAHUNAN AND PRINGGOKUSUMAN)
The use of shallow groundwater as a source of clean water is still being the preferred choice for Yogyakarta society because of its relatively easy, cheap, and practical use. However, on-site Domestic Wastewater Management System that widely used by residents was less than ideal due to limited la...
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| Format: | Theses |
| Language: | Indonesia |
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| Online Access: | https://digilib.itb.ac.id/gdl/view/70562 |
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| Institution: | Institut Teknologi Bandung |
| Language: | Indonesia |
| Summary: | The use of shallow groundwater as a source of clean water is still being the
preferred choice for Yogyakarta society because of its relatively easy, cheap, and
practical use. However, on-site Domestic Wastewater Management System that
widely used by residents was less than ideal due to limited land in densely populated
areas. So, it potentially contaminates residents' wells. This research was conducted
in Tahunan and Pringgokusuman which were expected to represent the condition
of shallow groundwater pollution in Yogyakarta City. The purpose of this study
were to identify the spread of Coliform bacterial contamination, examine the
dominant factors causing coliform bacterial contamination in shallow
groundwater, and provide suggestions for its management. The value of
groundwater quality parameter Total Coliform was used as an independent
variable, while the dependent variables were used depth, type, and wall of well,
type of SPALD, distance of well to septic tank, latrine, and other pollutant sources,
population density, land use, groundwater level, rainfall, soil type, and slope. Those
parameters were analyzed statistically with logistic regression using IBM SPSS 26
software and supported by the results of the Analytical Hierarchy Process (AHP)
study using Expert Choice software. Meanwhile, mapping of coliform bacterial
contamination in shallow groundwater would be processed using ArcGIS 16.2
software. The results showed that 83,3% of the shallow groundwater samples in the
study area did not meet the total coliform standards for clean water. While the
dominant factors that most influence the bacteriological quality of groundwater in
the Total Coliform parameter were the distance of other pollutant sources to the
well, slope, and the distance of the septic tank to the well. Suggested groundwater
management are through technological, institutional, and social approaches.
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