Analysis of Lake Toba Water Quality In 4 Utilization Zones

Abstract

Lake Toba marines a water-unique ecosystem because 342 rivers input waters of Lake Toba but only one river for water output. Many activities today give various water pollutant matters into Lake Toba. The aim is to determine the pollution categories by several indicators by parameters value of psych and chemical indicators of the pollution level. The Method of this research uses the testing of the water quality sample of Lake Toba by in-situ and ex-situ analysis to determine the pollution categories by pollution level valuation based on the environment standard limit listed by Government Regulation No.82 2001st and Minister of Health Regulations No.492 of 2010st. The results of in-situ and ex-situ analysis of water samples from 4 zones namely the agriculture zone, harbor zone, tourist zone, and aquaculture zone show that all of the zones still not yet to be polluted because the results of water sample analysis value in generally under the limits value of environment standard listed by Government Regulation of PP No.82 2001st and Minister of Health Regulations No.492 of 2010th as the standard reference.