Surface water quality at different land use in the Welang Hulu River Basin, East Java, Indonesia

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Vol. 10 No. 1 (2024)
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NADILA WULAN CAHYANI ♥
Departemen Biologi, Fakultas Sains dan Analitik Data, Institut Teknologi Sepuluh Nopember. Jl. Teknik Kimia, Surabaya 60111, Jawa Timur, Indonesia
ANGGRAINI AURINA PUTRI
Departemen Ilmu Tanah, Fakultas Pertanian, Universitas Brawijaya. Jl. Veteran no 1, Malang 65145, Jawa Timur, Indonesia
RONY IRAWANTO
Pusat Penelitian Ekologi dan Etnobiologi, Badan Riset dan Inovasi Nasional. Jl. Raya Surabaya - Malang No.Km. 65, Sembung Lor, Parerejo, Purwodadi, Pasuruan 67163, Jawa Timur, Indonesia

Abstract

Abstrak. Cahyani NW, Putri AA, Irawanto R. 2024. Surface water quality at different land use in the Welang Hulu River Basin, East Java, Indonesia. Pros Sem Nas Masy Biodiv Indon 10: 26-31. Water is a natural resource needed by all living things. The need for clean water is very important for human life and it is important to plan a clean water supply system that is well managed. Water in circulation and distribution is very easily contaminated with chemicals or other substances through environmental pollution. Pollution and decline in water quality are closely related to population density. The Welang Hulu Watershed is part of a natural system that is useful in providing water for the surrounding area. Increased human activity in the Upper Welang Watershed can cause rivers to become vulnerable to water pollution, thereby causing a decline in environmental quality. Therefore, this research was carried out to determine the quality of water in the Welang Hulu watershed. The research was conducted in March-July 2023 in the Upper Welang Watershed. Water sampling was divided into 12 different location points representing land use areas of forest, gardens, moorland, rice fields, residential areas, and industry and was carried out in 3 sub-districts including the Welang Hulu watershed, namely Lawang, Purwodadi, and Purwosari, East Java. This research uses a purposive random sampling method and descriptive analysis. Measurements were carried out by looking at environmental parameters in the form of sunlight intensity, humidity and air temperature, as well as river water quality parameters such as water temperature, pH, TDS and 14 other chemical parameters. Based on the research results, it shows that in the Upper Welang Watershed, Chlorine (Cl), Bromine (Br), Lead (Pb), Nitrate (NO3-), Nitrite (NO2-), Fluoride (F-), and Carbonate (CO32-) were found.


 

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