Groundwater quality : comparing alluvial plain and tertiary volcanic in tropical region

Sustainable water resources are the most important issue related to the effects of land use change. However, aspects of geomorphology and lithology have not been studied by researchers before. This study aims to analyze the characteristics of groundwater systems associated with lithology and geomorphology. The method used in this study was a survey. Data retrieval is done during the long dry season (tropical region), and the normal dry season in regions with different land forms and lithology. Analyze the data by comparing groundwater samples with physical water quality. The results showed that in tertiary volcano areas there is a decrease in the quality of groundwater physically during the long dry season, while in alluvial plains there is no physical decrease in water quality. The decrease in water quality occurs during the long dry season. The decrease in groundwater quality is influenced by the dry season, the litology of quarland volcanic rocks, and the shape of tertiary volcanic landform.