CONTROLLING THE POLLUTION OF SURABAYA RIVER BASED ON THE STUDY OF IPAL (IJIN PEMBUANGAN AIR LIMBAH) CONDUCT

Surabaya River contributes great benefits to Surabaya people as its water still becomes the main source of Perusahaan Daerah Air Minum (PDAM) or Regional Water Utility Company. However, it has indications of water quality decrease due to over-pressure from irresponsible disposal of industrial waste. Therefore, a study is required to investigate: (a) the conduct of IPAL (Izin Pembuangan Air Limbah or Waste Water Disposal Permit) by industrial parties, (b) the identification of obstacles in implementing IPAL, and (c) the arrangement of activity plan in controlling and recovering the water quality of Surabaya River based on the results of review and identification. The result findings indicated that all parameters of waste water being tested at industries of target groups 01 and 02 did not exceed the quality standard of waste water. This kind of condition describes that all industries of target groups 01 and 02 have obeyed the conduct of IPLC. Meanwhile, there is only one industry at the target group 03 that meets the quality standard of waste water. All parameters of waste water at the three remaining industries have exceeded the threshold of waste water quality standard.