ANALYSIS OF IRRIGATION WATER QUALITY IN SOREANG DISTRICT (CASE STUDY: CIBEUREUM IRRIGATION AREA AND LEUWIKURAY IRRIGATION AREA)

• Main Author: Ahwan Al - Farisi, Fauzan
• Format: Final Project
• Language: Indonesia
• Subjects: Teknik saniter dan perkotaan; teknik perlindungan lingkungan
• Online Access: https://digilib.itb.ac.id/gdl/view/77421
• Institution: Institut Teknologi Bandung

The agricultural sector accounts for 70% of global water usage (Winpenny dkk, 2010). The growing population has led to the conversion of agricultural land and its surrounding areas into residential and industrial zones. This shift not only affects the quantity of water used, such as discharge rates, but also has negative implications for the quality of irrigation water. Unfortunately, there is a lack of research on the impact of land use changes on irrigation water quality, making it the focus of this study. The research was conducted in Soreang District, the capital city of Bandung Regency, which is experiencing rapid infrastructure development. The study involved field observations, water sampling, and laboratory analysis of water quality parameters. Thirty sampling points were distributed across two irrigation areas, namely D.I. Cibeureum and D.I. Leuwikuray. The laboratory analysis results were compared with the water quality standards specified in Government Regulation Number 22 of 2021 (Class II) and the 2014 R&D SDA Irrigation Water Quality Criteria. The pollution index method was used to determine the water quality status. Data processing revealed that several parameters exceeded the quality standards at the research site, including electrical conductivity (DHL), total dissolved solids (TDS), total suspended solids (TSS), biochemical oxygen demand (BOD5), chemical oxygen demand (COD), dissolved oxygen (DO), sodium adsorption ratio (SAR), sodium percentage (%Na), residual sodium carbonate (RSC), ammonia, sulfate, oil and fat, surfactants, chlorides, and E. coli. Field observations also confirmed the presence of domestic waste, industrial waste, and agricultural waste in the vicinity of the irrigation canals. Furthermore, the deteriorated condition and lack of paving on the irrigation canals could exacerbate the degradation of irrigation water quality in the study area. Given the poor quality of irrigation water, it is crucial to evaluate and address the issues affecting the irrigation canals to safeguard the productivity and health of farmers and consumers.