Macrozoobenthos that live in the base of a river is commonly used as bioindicator, as its presence is depended on the water quality of the river in general. To understand the condition in Batang Gadis River water, a study has been conducted on November 2016 – Februari 2017. Samples were taken from 5 stations, around the household area (S1), around the gold mining field (S2), around the sand m…