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Analisis Debit Potensial dan Kualitas Air Tanah Dangkal di Sub DAS Kasin Kota Malang Yuliani, Emma; Hendrawan, Andre Primantyo; Rubiantoro, Prasetyo; Wardani, Annida Shafira; Miasari, Putu Kalila Shevanya
Jurnal Kridatama Sains dan Teknologi Vol 6 No 02 (2024): JURNAL KRIDATAMA SAINS DAN TEKNOLOGI
Publisher : Universitas Ma'arif Nahdlatul Ulama Kebumen

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53863/kst.v6i02.1438

Malang City is the second largest city in East Java. Rapid population growth changes the city of Malang from an agrarian to a residential and industrial area. This has resulted in increased pressure on groundwater conditions both in quantity and quality. Groundwater exploitation for the fulfillment of clean water is one of the main factors causing a decrease in shallow groundwater levels. Pressure on the quality of one of them is domestic waste and industrial waste discharged on the ground surface. The Kasin sub-watershed area of Malang City is a basin area in the middle of a dense urban settlement and industry. Runoff flowing water gathered into one in the Kasin River so that this condition is vulnerable to pollution of surface water and groundwater. The research methods used include survey, geoelectric measurements, water sampling, laboratory testing, and data processing using the Darcy to calculate groundwater potential, Water Quality Index (WQI) method and Pollution Index to determine groundwater quality against land use change. Based on the results of the observations carried out, the research area is included in the Malang Tuff Formation (Qvtm) with a resistivity value range of 3.4–389 Ωm resulting in rock layers consisting of top soil, clay, tufa, sandstone tuft, pumice tuft, and breksi tuft. From the geoelectric point, 2 passes were made to obtain a hydraulic slope that illustrates the potential of groundwater in the study area of 0.340 – 8.273 l/second. Based on the results of the calculation, the shallow groundwater pollution index is classified as light to moderately polluted. Meanwhile, with the WQI method, water is very bad and not suitable for drinking

Hazards and Risk Assessment for Physical Hydraulic Structures of Dam Model in the Laboratory Wiyono Wit Saputra, Anggara; Rubiantoro, Prasetyo; Tri Juwono, Pitojo; Harisuseno, Donny; Sidqi Fidari, Jadfan
Jurnal Teknik Pengairan: Journal of Water Resources Engineering Vol. 15 No. 2 (2024)
Publisher : Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.pengairan.2024.015.02.10

Some workers often neglected Occupational Health and Safety (OHS) regulations in the laboratory environment, resulting in potential hazards that ultimately led to workplace accidents. The physical hydraulic model of dam structures in this laboratory involved activities that posed potential risks. Hazard assessment and the risk of workplace accidents were identified through direct field observations to pinpoint potential risks associated with these activities. Questionnaires and interviews with personnel involved in laboratory activities, including workers and technicians, were conducted to gather relevant data concerning the research problem. This study aimed to identify potential risks and hazards using a Job Safety Analysis approach and to assess the risks associated with each activity stage. Risk levels at various stages of work were determined through job safety analysis within the OHS management system. Risk identification encompassed impacts on individuals, equipment, materials, and the environment. The highest high-risk and moderate-risk identified from the assessment are the demolition of the previous dam model in the site preparation step and the preparation of the electric water pump with a capacity of 100 l/second in the running stage. Generally, based on the identified risk categories, risk mitigation for dam model testing work in the laboratory included using Personal Protective Equipment (PPE) such as ear protection, masks, helmets, safety shoes, and gloves to prevent work-related accidents.

Hazards and Risk Assessment for Physical Hydraulic Structures of Dam Model in the Laboratory Wiyono Wit Saputra, Anggara; Rubiantoro, Prasetyo; Tri Juwono, Pitojo; Harisuseno, Donny; Sidqi Fidari, Jadfan
Jurnal Teknik Pengairan: Journal of Water Resources Engineering Vol. 15 No. 2 (2024)
Publisher : Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.pengairan.2024.015.02.10

Some workers often neglected Occupational Health and Safety (OHS) regulations in the laboratory environment, resulting in potential hazards that ultimately led to workplace accidents. The physical hydraulic model of dam structures in this laboratory involved activities that posed potential risks. Hazard assessment and the risk of workplace accidents were identified through direct field observations to pinpoint potential risks associated with these activities. Questionnaires and interviews with personnel involved in laboratory activities, including workers and technicians, were conducted to gather relevant data concerning the research problem. This study aimed to identify potential risks and hazards using a Job Safety Analysis approach and to assess the risks associated with each activity stage. Risk levels at various stages of work were determined through job safety analysis within the OHS management system. Risk identification encompassed impacts on individuals, equipment, materials, and the environment. The highest high-risk and moderate-risk identified from the assessment are the demolition of the previous dam model in the site preparation step and the preparation of the electric water pump with a capacity of 100 l/second in the running stage. Generally, based on the identified risk categories, risk mitigation for dam model testing work in the laboratory included using Personal Protective Equipment (PPE) such as ear protection, masks, helmets, safety shoes, and gloves to prevent work-related accidents.

Construction of Simple Bathing, Washing, and Toilet Facilities for Sanitation and Environmental Conservation in Polaman Sub-Village, Kalirejo Village, Lawang District, Malang Regency Suhartanto, Ery; Bisri, Mohammad; Andawayanti, Ussy; Wahyuni, Sri; Chandrasasi, Dian; Marsudi, Suwanto; Rubiantoro, Prasetyo
TEKAD : Teknik Mengabdi Vol. 5 No. 1 (2026)
Publisher : Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.tekad.2026.05.1.4

Limited access to adequate bathing, washing, and toilet facilities (MCK) remains a significant problem for residents of RT-03/RW-10, Polaman Sub-Village, Kalirejo Village, Lawang District, Malang Regency, so that some residents still use the river to meet their basic sanitation needs, potentially reducing their health and environmental quality. This Community Service Activity aims to provide simple WASH facilities that meet sanitation standards while promoting behavioral changes toward clean and healthy living through community participation. The implementation methods included an initial survey and interviews to identify the socio-cultural and environmental conditions, discussions to develop solutions with the RT administrators and residents, socialization with the PKK women's group, the construction of the MCK through the self-help efforts of students, donors, and the community during July-October 2025, and an evaluation in November 2025 through field observations, interviews, and documentation. The results of the activity include the construction of a simple, functional, and easy-to-operate toilet two units with a layout that meets comfort standards and better manages wastewater flow; increased community understanding of the importance of sanitation and environmental conservation; and a stronger spirit of cooperation in maintaining shared facilities. Overall, this program was deemed effective by residents and neighborhood association administrators in improving access to basic sanitation, reducing dependence on rivers as a means of sanitation, and supporting the creation of a cleaner, healthier, and more sustainable residential environment, while also providing a model for simple sanitation facilities that can be replicated in similar areas.

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