Quality of Cikawung river water based on phytoplankton diversity

Abstract This research aims to determine the quality of Cikawung river water based on phytoplankton diversity conducted in April-May 2019. This research uses descriptive method, with quantitative approach. The sample taken was 10% of the length of the Cikawung river, which is 5 km divided into 3 stations. The quality of the waters of the Cikawung river can be seen from the diversity index, evenness index and phytoplankton dominance index. The results show that the diversity value is low to moderate. The evenness value is categorized as stable condition. While the dominance index showed as labile condition or under ecology’s pressure. Broadly speaking, the quality of the waters of Cikawung river based on the diversity index is included in the heavily polluted category.