THE CONDITION OF THE SETIAMANAH LAKE IN TERMS OF WATER QUALITY

E Wardhani^[1], N A Fitriani^1*

¹ Environmental Engineering Study Program, Faculty of Civil Engineering and Planning, National Institute of Technology, Bandung, Indonesia

[1]^* Corresponding author’s email: [email protected]

DOI: https://doi.org/10.20885/icsbe.vol2.art15

ABSTRACT

Setiamanah Lake is located in Setiamanah Village, Central Cimahi District, Cimahi City. This lake has an area of 0.04 ha with a depth of 5 m and a volume of 1.204.5 m³. This lake functions as a rainwater shelter and is planned to be used as a raw water source. This lake is part of the Cisangkan River watershed. The activities of residents in the watershed significantly affect the lake’s water quality. Activities in the Cisangkan River Basin consist of domestic, non-domestic, agricultural, and plantation activities. The Setiamanah lake will be designated as a source of raw water, so it is necessary to analyze the water quality and determine its quality status to find out how the water conditions and the lake management are. Water quality analysis was carried out in October 2021 (rainy season) and April 2022 (dry season) with 23 parameters analyzed. In 2021 12 parameters do not meet the standards, and in 2022 9 parameters do not meet the quality standards. The quality standard used is Government Regulation No.22 of 2021 class I. Based on the calculation of water quality status using the pollutant index method, Setiamanah Lake in both seasons shows mild contamination, with the pollutant index value in 2021 being 8.398 and in 2022 being 8.325.

Keywords: Setiamanah Lake, Cisangkan River, quality standards, water quality, pollutant index

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