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All Journal BALANGA: Jurnal Pendidikan Teknologi dan Kejuruan
Lucyanita Bayu Risqi
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Civil Engineering, Building, Construction & Architecture Education Energy Engineering Other

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THE EFFECTIVENESS OF TUMBLER USE IN REDUCING PLASTIC WASTE GENERATION AMONG STUDENTS IN DENPASAR CITY Lucyanita Bayu Risqi; I Made Alit Widnyana; Azizah Azis; Ayuni Harianti
BALANGA: Jurnal Pendidikan Teknologi dan Kejuruan Vol. 13 No. 1 (2025): Journal Balanga Edisi Januari-Juni 2025
Publisher : Jurusan Pendidikan Teknologi dan Kejuruan, FKIP, Universitas Palangkaraya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37304/balanga.v13i1.22020

Abstract

This study aims to evaluate the effectiveness of using reusable water tumblers in reducing the consumption of bottled drinking water among senior high school students in Denpasar City. The research employed a mixed-methods approach, combining quantitative and qualitative methods through surveys using questionnaires and interviews with 322 respondents from two schools. The findings indicate that the average consumption of bottled drinking water before the habitual use of tumblers was 2.618 bottles per student per week, which decreased to 1 bottle per week after tumbler use became a regular practice. Pearson correlation analysis revealed a moderately strong negative relationship between tumbler usage frequency and plastic bottle consumption (r = -0.61). Furthermore, the linear regression model showed that each increase in tumbler usage level could reduce plastic bottle consumption by 0.69 bottles per week. The study concludes that the use of tumblers is effective in reducing bottled water consumption among students, although infrastructure support, such as water refill stations in schools, is still needed to optimize its impact.
ASSESSMENT OF SPRING WATER POTENTIAL BASED ON WATER BALANCE FOR DOMESTIC WATER SUPPLY IN BESANG KAWAN TOHJIWA VILLAGE Lucyanita Bayu Risqi; I Made Alit Widnyana; Azizah Azis
BALANGA: Jurnal Pendidikan Teknologi dan Kejuruan Vol. 13 No. 2 (2025): Journal Balanga Edisi Juli-Desember 2025
Publisher : Jurusan Pendidikan Teknologi dan Kejuruan, FKIP, Universitas Palangkaraya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37304/balanga.v13i2.24537

Abstract

Besang Kawan Tohjiwa Village Klungkung Regency Bali, has a natural spring with significant potential that has not been optimally utilized for domestic water supply. Currently, the spring is mainly used for drinking water, while other domestic water needs rely on PDAM supply. This study aims to evaluate the capability of the spring to meet domestic water demand based on a quantitative water availability approach. A quantitative descriptive-analytical method was applied. Spring discharge was measured using the volumetric method, while domestic water demand was calculated based on population data and standard domestic water requirements. A water balance approach was used to compare water availability and demand. The results indicate that the spring water availability is 5.61 m³/day, while the domestic water demand is 5.43 m³/day, resulting in a surplus of 0.18 m³/day. Quantitatively, the spring has sufficient capacity to meet domestic water demand. However, its utilization is constrained by the elevation difference between the spring location and residential areas. Proper technical planning of water abstraction and distribution systems is required to enable sustainable and efficient utilization of the spring as an alternative domestic water source.
Co-Authors Ayuni Harianti Azizah Azis I Made Alit Widnyana