Year - 1999 (Area in ‘000 hec.) River / Sampling Points pH Dissolved Oxygen (mg /L) Biological Oxygen Demand (BOD in mg/L) Total Coliform(MPN/100ml) Fecal Coliform (MPN /100 ml) Brahmani River Panposh Upstream 7.5 7.2 2.88 795 528.33 Panposh Downstream 7.5 6.1 5.36 1424 1058.5 Bonaigarh 7.5 7.25 2.83 241.5 125 Rengali 7.4 7.11 2.87 338.33 213 Samal 7.5 6.96 2.96 315.83 241 Kamalanga Upstream 7.5 6.7 3.5 597 417 Kamalanga Downstream 7.4 6.3 4.6 1044 757 Bhuban 7.4 6.72 3.59 885.83 589 Dharamsala -- -- -- -- 664 Pottamundai -- -- -- -- 900 Source- OSPCB Website Year - 1998 River / Sampling Points pH Dissolved Oxygen (mg /L) Biological Oxygen Demand (BOD in mg/L) Total Coliform (MPN/100ml) Fecal Coliform (MPN /100 ml) Brahmani River Panposh Upstream 7.7 7.4 3.5 312 240 Panposh Downstream 8 6.5 5.7 862 547 Bonaigarh 7.8 7.9 3.5 264 205 Rengali 7.6 7.9 3.2 278 175 Samal 7.7 7.7 3.5 394 282 Kamalanga Upstream 7.8 7.8 4.2 289 223 Kamalanga Downstream 8 6.2 6 1097 632 Bhuban 7.7 7.2 4.9 375 184 Dharamsala -- -- -- -- 388 Pottamundai -- -- -- -- 257 Source- OSPCB Website Year - 1997 River / Sampling Points pH Dissolved Oxygen (mg /L) Biological Oxygen Demand (BOD in mg/L) Total Coliform (MPN/100ml) Fecal Coliform (MPN /100 ml) Brahmani River Panposh Upstream 7.6 8.6 3.4 396 285 Panposh Downstream 7.8 7.3 5.9 1910 1275 Bonaigarh 7.7 9 3.3 259 186 Rengali 7.6 9.1 3.3 771 586 Samal 7.5 8.5 3.8 622 381 Kamalanga Upstream 7.6 8.4 4.4 1005 642 Kamalanga Downstream 7.9 7 7.4 1570 940 Bhuban 7.6 8.2 4.4 643 206 Dharamsala -- -- -- -- 455 Pottamundai -- -- -- -- 445 Source- OSPCB Website