| dc.description.abstract | This research aims to analyze the quality and geochemical distribution of
groundwater in the Winongo watershed of Yogyakarta City, by considering the
existing conditions of the region. The research site is located in the center of
Yogyakarta City, which is an area with dense community activities. The area is also
characterized by its constituent rocks which are young volcanic deposits. This
research is important to determine the potential and mapping of groundwater in the
location, given the need for clean water which is increasing along with population
growth. The method used in this research involves the use of software such as
Quantum GIS (QGIS) 3.30.0 to conduct groundwater quality mapping and Origin
2023 to create stiff diagrams and stiff maps. The parameters studied include cations
(Na, K, Al, and Cu) and anions (Cl, SO4, and NO3) in groundwater. The results
showed that the contents of pH, TDS, DHL, chloride, sulfate, and nitrate can be
influenced by domestic activities in the study area. The presence of sodium,
potassium and aluminum, meanwhile, can be attributed to the natural source of the
constituent rocks. The stiff diagram shows that the dominant ion conditions in the
study area are divided into two types, the first type is groundwater type I Na(K)-Cl
with 24 sampling points, which is marked in red. The second type is type II Na(K)-
SO4 groundwater with 8 sampling points, which is marked with yellow
colorKeywords: Mapping, stiff diagram, groundwater, Geochemistry, Winongo
Watershed. This means that 75% of the study area has type I groundwater, with
dominant cations Na + K and dominant anions Cl and SO4. This study provides a
better understanding of groundwater quality in the Winongo watershed of
Yogyakarta City and its relationship with the existing conditions of the area. These
findings can be useful in groundwater resource management and decision-making
related to water supply in the area. | en_US |
