by Ketut Sumerjana
The comparative analysis of water quality and management techniques between Lake Beratan and Lake Tamblingan uncovers critical insights into the physico-chemical factors influencing water quality in these linked lakes. The study used Geographic Information System (GIS) and Water Quality Index (WQI) approaches to evaluate water samples gathered in both dry and rainy seasons. According to Chitradevi et al., 2021, and Călmuc et al., 2020, the results categorize Lake Tamblingan's water quality as "good," with Water Quality Index (WQI) values of 62.5% in the dry season and 49.7% in the wet season, while Lake Beratan's water quality is considered "excellent," with WQI scores of 43.23% and 45.7% for the corresponding seasons.
The findings highlight the significance of comprehending the interrelationship of various water bodies, especially with water quality management. The integration of GIS with WQI provides a comprehensive framework for assessing and monitoring water quality, allowing stakeholders to pinpoint pollution sources and execute effective management plans (Makanda & Nzama, 2023; Călmuc et al., 2020). The research underscores the need for continuous surveillance to prevent further contamination and pollution, stressing the importance of adequate water treatment before consumption (Serio et al., 2021).
The evaluation of water quality using WQI is essential for guaranteeing the safety of water resources for human consumption and ecological well-being. The Water Quality Index (WQI) is an integrative instrument that consolidates many water quality characteristics into a singular index, thereby enhancing the communication of water quality status to policymakers and the public (Hamza, 2024; Tyagi et al., 2020). This method facilitates the detection of pollution trends and underpins the formulation of targeted measures to enhance water quality and sustainability in the area (Sharma et al., 2022).
The comparative examination of Lake Beratan and Lake Tamblingan illustrates the efficacy of GIS and WQI techniques in evaluating water quality. The results support the adoption of strategic management approaches to protect water quality, ensuring these essential resources stay safe for consumption and ecological sustainability against rising human-induced pressures (Chitradevi et al., 2021; Serio et al., 2021).
Figure 1 water Quality Index
Figure 3 Water Quality Index Comparison
Figure 4 Water Quality Indeks of Lake Beratan and Tamblingan
References
Chitradevi, R., Jeyaraj, M., Ghadamode, V., Poonkodi, K., Venkadasamy, R., & Magudeswaran, P. (2021). Assessment of water quality using modified water quality index and geographical information system in madathukulam taluk, tiruppur district, tamil nadu, india. Oriental Journal of Chemistry, 37(5), 1210-1220. https://doi.org/10.13005/ojc/370528
Călmuc, M., Calmuc, V., Arseni, M., Topa, C., Timofti, M., Georgescu, L., … & Iticescu, C. (2020). A comparative approach to a series of physico-chemical quality indices used in assessing water quality in the lower danube. Water, 12(11), 3239. https://doi.org/10.3390/w12113239
Hamza, Z. (2024). Application of water quality index in assessing water quality: a case study of the shatt al arab river.. Technium Romanian Journal of Applied Sciences and Technology, 21, 73-82. https://doi.org/10.47577/technium.v21i.10737
Makanda, K. and Nzama, S. (2023). Assessing feasibility of water resource protection practice at catchment level: a case of the blesbokspruit river catchment, south africa. Water, 15(13), 2394. https://doi.org/10.3390/w15132394
Serio, F., Martella, L., Imbriani, G., Idolo, A., Bagordo, F., & Donno, A. (2021). The water safety plan approach: application to small drinking-water systems—case studies in salento (south italy). International Journal of Environmental Research and Public Health, 18(8), 4360. https://doi.org/10.3390/ijerph18084360
Sharma, A., Malik, D., Kamboj, V., & Sharma, A. (2022). Waterbody status of upper ganga basin and its major tributaries using enviro‐assessment techniques. World Water Policy, 8(2), 216-231. https://doi.org/10.1002/wwp2.12084
Tyagi, S., Sharma, B., Singh, P., & Dobhal, R. (2020). Water quality assessment in terms of water quality index. American Journal of Water Resources, 1(3), 34-38. https://doi.org/10.12691/ajwr-1-3-3
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