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 Water quality criteria [1]


WATER QUALITY CRITERIA
Water class Criteria
A Drinking water without treatment:
Faecal coliforms: 50 MPN / 100 ml (max); DO: 5 mg/1 (min); BOD: 2mg/l (max)
B Bathing: Faecal coliforms:
500 MPN / 100 ml (max);DO: 5 mg /l (max)
C Drinking water with treatment:
Faecal coliforms: 5000 MPN / 100 ml (max)
DO: 4 mg/l (min); BOD: 3 mg/l (max)
D Wildlife, fisheries:
DO: 4mg/l (min)
Source: Central Pollution Control Board


HARDWAR KANPUR ALLAHABAD
Dissolved Oxygen (mg/l)
D/S   8.1   6.9    7.6		 Dissolved Oxygen (mg/l)
U/S   7.2   N.A.   5.1
D/S   6.7   4.4   5.1		 Dissolved Oxygen (mg/l)
U/S   6.4   8     7.07
D/S   6.6   6.9   6.4
Biological Oxygen Demand (mg/l)
D/S   1.80   1.77   2.01
 Biological Oxygen Demand (mg/l)
U/S   7.17   N.A.   1.61
D/S   8.57   43.45   65.84		 Biological Oxygen Demand (mg/l)
U/S   7.2   N.A.   5.1
D/S   6.7   4.4   5.1
Faecal Coliforms (MPN/100)
D/S   477   518   490		 Faecal Coliforms (MPN/100)
U/S  161643  N.A.  N.A
D/S 144333  19500  N.A.		 Faecal Coliforms (MPN/100)
U/S   350   2011   N.A
D/S   743   367   N.A.
VARANASI PATNA DEFINITIONS
Dissolved Oxygen (mg/l)
U/S   5.6   7.8   7.7
D/S   5.9   7.2   6.8		 Dissolved Oxygen (mg/l)
U/S   8.4   7.7   8.2
D/S   8.1   7.5   7.4		 BOD(BIOLOGICAL OXYGEN DEMAND):A measure of the amount of oxygen consumed by micro-organisms that feed on organic matter in water. Higher BOD means more contaminated water.
DO(DISSOLVED OXYGEN): A measure of the oxygen dissolved in water. Higher DO means cleaner water.
FAECAL COLIFORM: Organisms found in the intestinal tracts of people and animals. Their presence in water indicates dangerous bacterial contamination.
Biological Oxygen Demand (mg/l)
U/S   10.13   2.62  1.16
D/S  10.60   5.94   1.89
 Biological Oxygen Demand (mg/l)
U/S   1.95   0.30   1.39
D/S   2.20   0.33   0.85
Faecal Coliforms (MPN/100)
U/S   387   4017   N.A.
D/S   793  988667  N.A.		 Faecal Coliforms (MPN/100)
U/S  161643  N.A.  N.A
D/S 144333  19500  N.A.		 1986    1990   1991
U/S Upstream D/SDownstream
MPN/100 Most Probable Number/100

Publication Date: 
29/09/1992
Down to Earth [2]
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Tags:
Pollution Control [3], River Pollution [4], Ganga [5], Water Quality [6], India [7]

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Source URL: http://admin.indiaenvironmentportal.org.in/feature-article/water-quality-criteria

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[1] http://admin.indiaenvironmentportal.org.in/feature-article/water-quality-criteria
[2] http://admin.indiaenvironmentportal.org.in/category/newspaper/down-earth
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/pollution-control
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/river-pollution
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/ganga
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/water-quality
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/india