Water Quality
Mahanadi
Brahmani
Baitarani
Rushikulya
Nagavali
Subernarekha
Nagavali river basin
Sl. No
Location
No. of Obs.
Annual average (2009) value
(Range of values)
Frequency of violation (Percent of violation) from designated criteria value
Designated Class
Existing Class
Parameters responsible for downgrading the water quality
Possible Reason
Parameters
pH
DO (mg/l)
BOD (mg/l)
TC
(MPN/100 ml)
BOD
TC
1.
Penta U/s
4
8.0 (7.5-8.4)
7.3 (6.7-7.6)
1.3 (0.8-1.8)
2175 (1500-3100)
0
0
2.
J.K. Pur D/S
4
8.2 (7.7-8.5)
7.2 (6.8-7.7)
1.7 (1.3-2.1)
4275 (1700-7000)
0
2 (50)
C
Doesn’t conform to Class C
TC
Human activities
3.
Rayagada D/S
4
8.1 (7.5-8.5)
7.6 (7.4-8.1)
1.5 (1.2-1.7)
4175 (1100-9400)
0
1 (25)
C
Doesn’t conform to Class C
TC
Human activities
Class ‘C’ water quality Criteria
(
IS-2296-1982)
6.5-8.5
4 and above
3 or less
5000 or less
Drinking water source with conventional treatment followed by disinfection
Values within parenthesis are annual range values
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