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Catchement Area of Batam island. The main function of Duriangkang
resevoir is the water resources to support 78 % of drinking water supply
needs of Batam Island with the processing capacity amounting to 3000
liter/second. The main problem of Duriangkang Reservoir are : (1)
industrial waste water from Batamindo Industrial Zone has been extremely
polluted with COD conten (134,61 mg/liter) exceeding the Waste Water
Quality Standard Group II (80 mg/liter), (2) domestically waste water from
domestic activity in Duriangkang Catchment Area has also been
extremely polluted with BOD5 conten (58,22 mg/liter) exceeding the
Waste Water Quality Standard Group II (50 mg/liter). This research to
study influent of industrial waste water and domestically waste water to
carrying capacity of Duriangkang Reservoir.
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