Beban Pencemaran, Kapasitas Asimilasi dan Status Pencemaran Estuari Banjir Kanal Barat, Kota Semarang, Jawa Tengah

Abstract

West Banjir Kanal river is part of Garang Catchment Area which used as souce of drinking water for communities of West Semarang District, Central Java. The high intensities used of area around Garang Catchment Area for agriculture, settlement and industry caused water polluted.\xa0 This research conducted to determine pollution loading, assimilation capacity and pollution state of west Banjir Kanal estuary.\xa0 The research done by survey method with collected of water samples from 3 sampling point with 3 replication respectively.\xa0 The result showed that pollution load was 22 751.493 – 117 256.591 kg/day TSS, 154.019 – 1 843.323 kg/day nitrate and 0 – 835.463 kg/day phosphat, which these values have has exceeded their assimilation capacity, causing water pollution.\xa0 Water Quality Index value is 51.94 and which indicates that West Banjir Kanal Estuary is very high polluted by TSS, nitrate and phosphate.