Water Quality Status of Omang Pond in Gunungsewu Karst Area, Gunungkidul, Indonesia

Kusumawati, S. and Widyastuti, M. (2023) Water Quality Status of Omang Pond in Gunungsewu Karst Area, Gunungkidul, Indonesia. In: 4th Geoscience and Environmental Management Symposium, ICST UGM 2023, 1 November 2023through 2 November 2023, Yogyakarta.

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Abstract

The Gunungsewu Karst Area has a unique hydrological system with limited surface water resources, especially in dry seasons. Karst ponds, thereby, play an essential role in meeting the local water needs. Omang is a karst pond used intensively for bathing and washing, which is thought to decrease water quality. The research objectives were (1) to determine the characteristics of the pond, (2) to analyze the pond water quality, and (3) to assess the water quality status. Water quality analysis was conducted at several points selected by purposive random sampling. Temperature, pH, DO, and TDS were measured directly in the field, while nitrate, phosphate, turbidity, BOD, and fecal coliform were tested in the laboratory. Also, the National Sanitation Foundation-Water Quality Index (NSF-WQI) was employed to assess the water quality status. Results showed that the pond has a shallow depth, making the bottom sediment prone to mixing, and a volume of 4,706.09 m3. Per Governor Regulation Number 20 of 2008, DO, BOD, nitrate, phosphate, and pH exceeded their respective upper limits for class II purposes. In contrast, temperature, turbidity, TDS, and fecal coliform met the recommended standards. Based on the NSF-WQI values, the status of the pond water quality was moderately polluted. © 2023 EDP Sciences. All rights reserved.

Item Type: Conference or Workshop Item (Paper)
Additional Information: Cited by: 0; Conference name: 4th Geoscience and Environmental Management Symposium, ICST UGM 2023; Conference date: 1 November 2023 through 2 November 2023; Conference code: 196177; All Open Access, Gold Open Access
Uncontrolled Keywords: Water quality, Karst
Subjects: G Geography. Anthropology. Recreation > GB Physical geography
Divisions: Faculty of Geography > Departemen Geografi Lingkungan
Depositing User: Sri Purwaningsih Purwaningsih
Date Deposited: 05 Sep 2024 07:51
Last Modified: 05 Sep 2024 07:51
URI: https://ir.lib.ugm.ac.id/id/eprint/6463

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