Water Quality Downstream of Cimanuk River, West Java

Abstract

The Cimanuk River is one of the three major rivers in West Java, incidentally the second largest after the Citarum River which aims to analyze the physical and chemical qualities in the lower reaches of the Cimanuk River. The research was conducted for three months, which was carried out in the lower reaches of the Cimanuk River. Water sampling using the survey method. Sampling was carried out at three points by paying attention to community activities around the river waters. The parameters analyzed were temperature, Light Transparency, pH, TSS, TDS, DO, COD, Ammonia, Nitrate, Nitrite and Salinity Calculations following the quality standard rules of PP No. 22 of 2021, the water temperature at the three stations was 25°C. The value of light transparency ranges from 32 – 37 cm. The pH value at all three stations is neutral. The Salinity values at stations 1 and 2 are 0, and station 3 is 1.7. DO values at all three stations ranged from 7.0 – 9.6 mgL-1. COD values at all three stations ranged from 9.3 – 15 mgL-1. TDS values at all three stations range from 244 - 343 mgL-1. TSS values at all three stations ranged from 29 – 84 mgL-1. Ammonia values at all three stations ranged from 0.002 - 0.003 mgL-1. Nitrate values at all three stations ranged from 0.31 – 0.55 mgL-1. Then, the nitrite value at all three stations was 0.020 – 0.022 mgL-1. The results show that the parameters in the lower reaches of the Cimanuk River meet quality standards.