Abstract
As one of the districts in Bantul Regency which borders directly with the City of Yogyakarta, the District of Banguntapan has the potential to be an area affected by city development. This is what drives population growth in this district, so that the waste it generates also increases. The purpose of this study is to determine the level of groundwater vulnerability to pollution by using the SINTACS method and analyzing the dominant factors that influence it. Calculation and analysis results show that the variation of groundwater vulnerability index values in the study area ranged from 182.8 to 200.3, with 10 locations classified as high vulnerability and 2 locations classified as rather high vulnerability. Because it is located in a similar geological condition, namely the Aquifer Unit of Merapi Volcanic Fluvio Plain where most of the constituent material of this aquifer is sand and a little clay as inserts, the difference in groundwater vulnerability to pollution in the study area is only determined by the difference in groundwater depth.
Highlights
Urban areas have a large population, which encourages the need for large clean water as well
The decline in groundwater quality in an area indicates that groundwater pollution and land use are sources of contaminant release that have the opportunity to reduce groundwater quality through the infiltration process [2], while according to [3], sources of groundwater pollutants can be either point or nonpoints originating from domestic, agricultural, industrial, mining and tourism waste
This study is located in Banguntapan District which is administratively included in the Bantul Regency area (Figure 1)
Summary
Urban areas have a large population, which encourages the need for large clean water as well. According to [1], in addition to increasing groundwater exploitation, population growth will increase the amount of household and industrial waste that is known to have caused significant changes in groundwater quality. The decline in groundwater quality in an area indicates that groundwater pollution and land use are sources of contaminant release that have the opportunity to reduce groundwater quality through the infiltration process [2], while according to [3], sources of groundwater pollutants can be either point or nonpoints originating from domestic, agricultural, industrial, mining and tourism waste. One of the many approaches taken to maintain the sustainability of good water quality and quantity is to study groundwater vulnerability to pollution [4]. Potential groundwater pollution is influenced by the hydrogeological characteristics of an area. Different hydrogeological characteristics influence groundwater vulnerability to potential pollution. Groundwater vulnerability assessment on pollution is important to know the level of vulnerability and as a frame of reference in groundwater planning, development and management
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