Uji Toksisitas Air Limbah Ipal Komunal Mendiro Terhadap Ikan Zebra (Danio Rerio) Menggunakan Metode Whole Effluent Toxicity (Wet)

Abstract

If domestic wastewater is directly discharged into water bodies without being treated first, it will cause the water quality to decline and disrupt aquatic biota, therefore domestic wastewater must be treated first at a Wastewater Treatment Plant (IPAL). Communal IPAL is a suitable solution for domestic wastewater treatment. To determine the impact that will be caused, it is necessary to test physical, chemical parameters and toxicity levels. This research aimed to determine the LC50 value in the Mendiro Communal WWTP influent and effluent using the Whole Effluent Toxicity (WET) method using zebrafish (Danio rerio). The WET test consists of a preliminary test carried out for 24 hours and followed by a toxicity test carried out for 24, 48, 72 and 96 hours. The LC50 value at Mendiro Communal WWTP can be calculated using the probit method. Based on the analysis results, the LC50 value for the Mendiro Communal WWTP influent was 4%, while the LC50 value for the effluent could not be calculated because there were no deaths in the test animals during testing.