Parameter Unit Samples Location Standard* 1 2 3 TDS ppm 12.900 1.144 - 4.000 pH - 6.77 5-9 8 6-9 COD ppm 3.000 580 1.872 200 Nitrate ppm 0.189 1.2 - - Nitrite ppm 0.011 0.11 - - Ammonia ppm 14.11 48 0.22 5 Oiland Grease ppm 28 24 931 25 Phenol ppm 104.6 2.6 0.03 2 Phosphate ppm 0.072 0.136 - - Benzene ppm - - 0.08 - Toluene ppm - - 0.37 - Xylene ppm - - 0.93 -

1. CPU-Total E and P Indonesie; 2. Pertamina Refinery Unit IV; 3. Kawengan Oil Field *MER No.19/2010

Table 4: The characteristics of produced water in Indonesia.