Abstract
Coliform bacteria are microorganisms that are often used as indicators of the presence of other pathogenic bacteria. Calculation of total coliform bacteria needs to be done to determine the presence of organic waste pollution that occurs in the Blanakan River Estuary, Subang, West Java. The purpose of this study was to determine the total abundance of coliform bacteria (water status based on coliform level) and to study the relationship between total coliform bacteria and Zn heavy metal content in the Blanakan River Estuary. The method used was purposive sampling carried out at three sampling stations. The results obtained showed that the average coliform content in the three stations ranged from 9.2 x 10−2 to 3.0 x 10−1 (0.092 – 0.3) MPN/ml sample. Zn heavy metal content in the water at three stations ranged from 0.61 mg/l to 2.13 mg/l. The conclusion of this study is the abundance of the average total Coliform bacteria obtained at each station shows that the total content of Coliform bacteria has not exceeded water quality standards according to the Government Regulation no 82 of 2001. The presence of total coliform bacteria has a weak relationship with the presence of metals Zn.
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