_id	Development Region	Location / River	pH	TDS (mg/l)	DO (mg/l)	B0D (mg/l)
1	Eastern  	Mechi 	8.3	30	8.9	1.8
2	Eastern  	Kankai  	7.7	60	8.7	2
3	Eastern  	Arun  	6.2	200	9.1	2.1
4	Central 	East Rapti at Sauraha  	7.8	213	8.7	2.5
5	Western 	Seti at Ramghat 	8.2	222	9.3	2
6	Mid- Western 	Bheri at Chatagaon  	7.8	208	9.3	1.1
7	Far -Western 	Karnali at Chisapani  	7.8	264	10.5	1.5
8	Far -Western 	Mahakali at Pancheswor 	8.8	110	5	2
9	WHO Guideline  	""	6.5-8.5 	100	>5.0 	3