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All Journal Journal of Geoscience, Engineering, Environment, and Technology Prosiding Seminar Nasional Rekayasa Teknologi Industri dan Informasi ReTII
Listyani R.A., T.
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Aerospace Engineering Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Physics Transportation

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Spatial and Seasonal Variation of Doline Water Hydrochemistry in West Gunungsewu Karst Area, Yogyakarta Special Region, Indonesia Listyani R.A., T.; Ridayati
Journal of Geoscience, Engineering, Environment, and Technology Vol. 9 No. 2 (2024): JGEET Vol 09 No 02 : June (2024)
Publisher : UIR PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25299/jgeet.2024.9.2.6033

Abstract

The doline water hydrochemical study was conducted in the Gunungsewu karst area, Yogyakarta Special Region. The hydrogeological survey followed by doline water sampling was carried out in the Panggang and Wonosari-Baron Hydrogeological Subsystems. Ten selected doline water samples were taken, each in the dry and rainy season, for further physical/chemical testing in the laboratory. Research analysis includes hydrochemical analysis of several parameters such as pH, TDS, EC, major and minor ions content and assisted by difference and variability tests statistical analysis. The hydrochemical variations of doline water in the study area generally did not show any spatial variations, except for the EC parameter. Temporal/seasonal hydrochemical variations are apparent, as evidenced by differences in many variations of TDS, EC, major ions (Ca2+, Na+, K+, HCO3-, Cl-), and minor ions (sulfate and nitrate). In the dry season, the hydrochemical facies generally develop as Ca, Na-bicarbonate facies, while in the rainy season, doline water typically has Ca-bicarbonate facies. The hydrochemical of doline water may be influenced by groundwater.
The Water Quality Index of Springs in Bauro Village, Timor-Leste Juvencio Dos Santos; Listyani R.A., T.; Ev. Budiadi
Retii 2025: Prosiding Seminar Nasional ReTII ke-20 (Edisi Penelitian)
Publisher : Institut Teknologi Nasional Yogyakarta

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Abstract

The spring in Bauro Village, Timor-Leste, is used to meet the community's daily needs; therefore, an evaluation is needed to determine the quality of the groundwater from this spring. This research aims to assess groundwater quality, particularly using the Water Quality Index (WQI). Evaluation was carried out on 12 springs that emerged from limestone and sandstone. The research results show that not all springs meet the quality standards for drinking water or clean water. The WQI assessment shows that the majority of the 12 sampled sites (S1–S10 and S12) fall into the unsuitable category, indicating high levels of contamination from both natural and anthropogenic sources. Only Bauro spring S11 exhibited excellent water quality, while Luarai spring S12 showed poor drinking water quality and was unsuitable for clean water, reflecting localized contamination and possible mineral enrichment.
Co-Authors Evaristus Budiadi Juvencio Dos Santos Ridayati Ridayati