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All Journal Indonesian Journal of Geography Jurnal Presipitasi : Media Komunikasi dan Pengembangan Teknik Lingkungan Majalah Geografi Indonesia Jurnal RISET Geologi dan Pertambangan Jurnal Pengembangan Kota Journal of Degraded and Mining Lands Management Jurnal Wilayah dan Lingkungan Jurnal Pengabdian Kepada Masyarakat (Indonesian Journal of Community Engagement) Journal of Geoscience, Engineering, Environment, and Technology PROMINE Jurnal Geosains dan Teknologi Journal of Applied Geology BULLET : Jurnal Multidisiplin Ilmu Jurnal Geosaintek
Doni Prakasa Eka Putra
Departemen Teknik Geologi, Fakultas Teknik, Universitas Gadjah Mada
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Journal : Journal of Geoscience, Engineering, Environment, and Technology

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Application of DRASTIC Method for Groundwater Vulnerability Analysis to Contamination in Pemalang District, Pemalang Regency, Central Java Province, Indonesia Firginawan Surya Wanda; Doni Prakasa Eka Putra; Wahyu Wilopo
Journal of Geoscience, Engineering, Environment, and Technology Vol. 10 No. 02 (2025): JGEET Vol 10 No 02 : June (2025)
Publisher : UIR PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25299/jgeet.2025.10.02.22209

Abstract

Pemalang District, Pemalang Regency, Central Java Province, as the district's capital, has experienced rapid economic and population growth. This has resulted in increased exploitation and degradation of groundwater quality, with groundwater extraction increasing from 91,856 m³ to 133,708 m³. There was an average decrease in groundwater levels of 40-70 cm from 2020 to 2023, and an increase in nitrate and chloride levels in groundwater was recorded from 2021 to 2023. To maintain the availability of groundwater that is suitable for use, efforts are needed to prevent groundwater contamination in vulnerable areas. The approach applied to examine groundwater vulnerability to contamination is the DRASTIC method. The research location is a coastal area composed of quaternary deposits with lithology consisting of sand and gravel in the south and clay and silt in the north. It has a shallow groundwater depth and a groundwater flow pattern that flows from south to north. The results of the geospatial analysis revealed two zones of groundwater vulnerability to contamination, based on the DRASTIC Index value, consisting of moderate vulnerability   (>106-146) and high vulnerability (>146-186). There were 67.4% of high vulnerability zones in this research area, spread from the central part, which is Wanamulya Village, to the southern part, which is Surajaya Village.
Co-Authors Adelide Asriati Sekar Rianda Agung Harijoko Agung Setianto Agus Budhie Wiyatna Agus Hendratno Alwan Satapona Atikah Zahidah Atmaja, Rilo Restu Surya Aung, Hnin Thazin Avantio Pramaditya Azmin Nuha Azwar Satry Muhammad Boreborey, Ty Boulom, Johnny Carlito Baltazar Tabelin Denizar Rahman Deviana Halim Doung Rata Dwikorita Karnawati Efendi Putra Dwijaya Pa Egy Erzagian Firginawan Surya Wanda Galeh Nur Indriatno Putra Pratama H Setiawan Harizona Aulia Rahman Haryono, Septiawan Nur Hazarika, Hemanta Hemanta Hazarika Hendy Setiawan Heng, Salpisey Hermawan, Oktanius Richard Heru Hendrayana Hirajima, Tsuyoshi Hnin Thazin Aung I Gde Budi Indrawan I Wayan Warmada Igarashi, Toshifumi Jaingot A. Parhusip Jaingot A. Parhusip, Jaingot A. Jinno, Kenji Johnny Boulom Juwarso Juwarso Juwarso, Juwarso K D Setyawan Kenji Jinno Keophousone Phonhalath Kurnianto Dwi Setyawan Kyu Kyu Mar Kyu Mar, Kyu Leakhena Snguon Lenggono, Tego Liliane Manny Listiyastuti, Riana Makealoun, Somyot Manixone Thepgnothy Manny, Liliane Maris Setyo Nugroho Mohammad Pramono Hadi Muhammad Haikal Razi Muhammad Iqbal Muhammad Iqbal Muhammad, Azwar Satry Nuha, Azmin Nurwijayanti Oktanius Richard Hermawan Phetnakhone Xaixongdeth Phonhalath, Keophousone Ponhalath Xaixongdeth R Risanti Rahman, Denizar Rahmat Satya Nugraha Raja Susatio Raja Susatio Raja Susatio Rata, Doung Restu Tandirerung Rilo Restu Surya Atmaja Rilo Restu Surya Atmaja Rilo Restu Surya Atmaja Rilo Restu Surya Atmaja Salpisey Heng Sandi Suko Widagdo Sarto Sarto Sarto Satapona, Alwan Sato, Tsutomo Sato, Tsutomu Saw Aung Zaw Aye Sekar Rianda, Adelide Asriati Septiawan Nur Haryono Shinta Dwi Novianti Simamora, Lestari Sutra Slamet Widodo Snguon, Leakhena Somyot Makealoun Soutsadachan Chandalsouk Souvannachith, Thilavanh Suryanto, Wiwit Syauqi, Syauqi T. Putranto, Thomas Tabelin, Carlito Baltazar Tee Xiong Tego Lenggono Teuku Faisal Fathani Teuku Faisal Fathani Thanh Thuy, Tran Thi Thepgnothy, Manixone Thilavanh Souvannachith Thomas T. Putranto Thomas Triadi Putranto Thomas Triadi Putranto, Thomas Triadi Toshifumi Igarashi Tran Thi Thanh Thuy Tsutomo Sato Tsutomu Sato Tsuyoshi Hirajima Tsuyoshi Hirajima Ty Boreborey Visi Asriningtyas Wahyu Wilopo Wawan Budianta Wibowo, Handoko Teguh Wisnu Rachmad Prihadi Wiyatna, Agus Budhie Xaixongdeth, Phetnakhone Xaixongdeth, Ponhalath Xiong, Tee Yosua Priambodo Zaw Aye, Saw Aung