Total Maximum Daily Load of the Curug Sub-district Segment of The Cirarab River, Indonesia

Abstract

Although The Cirarab River has a highly polluted status, it is used as a source for clean and drinking water for people in Tangerang City. Pollution occurs due to poor river quality management. This study examines the Total Maximum Daily Load/TMDL of The Cirarab River at The Curug Subdistrict Segment using QUAL2Kw with two modelling scenarios. The first scenario was used to obtain the existing load, and the second scenario was used to determine TMDL. The existing loads results obtained were 12,032.26 kgBOD/day and 48,946.69 kgCOD/day. The TMDL results obtained were 2,234.30 kgBOD/day and 18,619.20 kgCOD/day. The existing loads entering each subsegment have exceeded TMDL that they need to be reduced. TMDL calculation is useful as a basis for an effective river management strategy.