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GENERAL
EFFLUENT STANDARDS
Schedule
- VI, Part A, GSR 801(E) dt. 3 1.12.93.
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Sl.
No.
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Parameter
|
Unit
|
Standards
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Inland
surface water
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Public
sewer
|
Land
for irrigation
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Marine
coastal areas
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1.
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Colour
and odour
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-
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All
efforts should be made to remove colour and unpleasant odour as
far as practicable.
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-
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All
efforts should be made to remove colour and unpleasant odour as
far as practicable.
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All
efforts should be made to remove colour and unpleasant odour as
far as practicable.
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2.
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Suspended
solids
|
mg/l,
max.
|
100
|
600
|
200
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a)
For process effluent—100
b)
For cooling water - 10 percent above total suspended matter of
influent
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3.
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Particle
size of Suspended solids
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-
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Shall
pass 850 micron IS sieve
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-
|
-
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a)
Floatable solids–max. 3 mm
b)
Settleable solids–max. 850 µm.
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4.
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pH
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-
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5.5
to 9
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5.5
to 9
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5.5
to 9
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5.5
to 9
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5.
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Temperature
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0C,
max.
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Shall
not exceed 5 0C above the receiving water temperature
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-
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-
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Shall
not exceed 5 0C above the receiving water temperature
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6.
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Oil
and grease
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mg/l,
max.
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10
|
20
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10
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20
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7.
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Total
residual chlorine
|
mg/l,
max.
|
1
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-
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-
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1
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8.
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Ammoniacal
nitrogen (as N)
|
mg/l,
max.
|
50
|
50
|
-
|
50
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9.
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Total
kjeldahl nitrogen (as N)
|
mg/l,
max.
|
100
|
-
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-
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100
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10.
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Free
ammonia (as NH3)
|
mg/l,
max.
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5
|
-
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-
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5
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11.
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Biochemical
Oxygen Demand(3 days at 270 C)
|
mg/l,
max.
|
30
|
350
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100
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100
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12.
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Chemical
oxygen demand
|
mg/l,
max.
|
250
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-
|
-
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250
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13.
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Arsenic
(as As)
|
mg/l,
max.
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0.2
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0.2
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0.2
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0.2
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14.
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Mercury
(as Hg)
|
mg/l,
max.
|
0.01
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0.01
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-
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0.01
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15.
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Lead
(as Pb)
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mg/l,
max.
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0.1
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1
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-
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2
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16.
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Cadmium
(as Cd)
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mg/l,
max.
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2
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1
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-
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2
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17.
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Hexavalent
chromium (as Cr +6)
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mg/l,
max.
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0.1
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2
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-
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1
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18.
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Total
chromium (as Cr)
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mg/l,
max.
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2
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2
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-
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2
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19.
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Copper
(as Cu)
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mg/l,
max.
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3
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3
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-
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3
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20.
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Zinc
(as Zn)
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mg/l,
max.
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5
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15
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-
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15
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21.
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Selenium
(as Se)
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mg/l,
max.
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0.05
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0.05
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-
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0.05
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22.
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Nickel
(as Ni)
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mg/l,
max.
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3
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3
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-
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5
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23.
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Cyanides
(as CN)
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mg/l,
max.
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0.2
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2
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0.2
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0.2
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24.
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Fluorides
(as F)
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mg/l,
max.
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2
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15
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-
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15
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25.
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Dissolved
Phosphates (as P)
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mg/l,
max.
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5
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-
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-
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26.
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Sulphides
(as S)
|
mg/l,
max.
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2
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-
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-
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5
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27.
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Phenolic
compounds(as C6H5OH)
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mg/l,
max.
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1
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5
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-
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5
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28.
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Radioactive
materials:
a)
Alpha emitters
b)
Beta emitters
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Micro
curie/ml, max.
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10-7
10-6
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10-7
10-6
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10-8
10-7
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10-7
10-6
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29.
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Bioassay
test
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-
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90
% survival of fish after 96 h in 100 % effluent
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90
% survival of fish after 96 h in 100 % effluent
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90
% survival of fish after 96 h in 100 % effluent
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90
% survival of fish after 96 h in 100 % effluent
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30.
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Manganese
(as Mn)
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mg/l,
max.
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2
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2
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-
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2
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31.
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Iron
(as Fe)
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mg/l,
max.
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3
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3
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-
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3
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32.
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Vanadium
(as V)
|
mg/l,
max.
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0.2
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0.2
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-
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0.2
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33.
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Nitrate
nitrogen (as N)
|
mg/l,
max.
|
10
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-
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-
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20
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-
NATIONAL
AMBIENT AIR QUALITY STANDARD (NAAQS)
E(p)rules,
schl.- vii, gsr 176(e) dt. 2.4.1996.
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Pollutant
|
Time
weighted average
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Concentration
in ambient air, µg*/m3
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Method
of Measurement
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Industrial
area
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Residential,
rural & other areas
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Sensitive
area
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Sulphur
dioxide(SO2)
|
Annual
Av**
|
80
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60
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15
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1.
Improved West and Gacke method
2.
Ultraviolet fluorescence
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24
hours***
|
120
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80
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30
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Oxides
of nitrogen as NO2
|
Annual
Av**
|
80
|
60
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15
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1.
Jacob & Hochheister modified (Na-Arsenite) method.
2.
Gas phase chemi-luminescence
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24
hours***
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120
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80
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30
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Suspended
particulate matter (spm)
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Annual
av**
|
360
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140
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70
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High
volume sampler (average flow rate not less than 1.1 m3/minute)
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24
hours***
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500
|
200
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100
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Respirable
particulate matter (size less than 10 µm)
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Annual
Av**
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120
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60
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50
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Respirable
particulate matter sampler
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24
hours***
|
150
|
100
|
75
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Lead
(pb)
|
Annual
av**
|
1.0
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0.75
|
0.50
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--
as method after sampling using epm2000 or equivalent filter paper
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24
hours***
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1.5
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1.00
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0.75
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Carbon
monoxide (CO), mg/m3
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8
hours***
|
5.0
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2.0
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1.0
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--Non
dispersive infrared spectroscopy
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1
hour
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10.0
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4.0
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2.0
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* Except in the case of carbon monoxide.
**
Annual Arithmetic mean of minimum 104 measurements in a year.
These
are 24 hourly measurements, taken twice a week, at uniform interval.
*** 24 hourly/8 hourly values should be met 98% of the time
in a year.
However
2% of the time it may exceed but not on two consecutive days.
Note:
1.
National Ambient Air Quality Standard: The levels of air quality
necessary with an adequate margin
of safety, to protect the public health, vegetation and property.
2.
Whenever and wherever two consecutive values exceeds the limit
specified above for the respective category,
it shall be considered adequate reason to institute regular/continuous
monitoring and further investigation.
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-
Ambient Air Quality Standards in respect of Noise
SCHEDULE
[Rule 3(1) and 4(1) of
Noise Pollution (Regulation and Control) Rules, 2000.]
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Area
Code
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Category
Of Area/Zone
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Limit
in dB(A), Leq*
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Day
Time
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Night
Time
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A
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Industrial
Area
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75
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70
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B
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Commercial
Area
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65
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55
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C
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Residential
Area
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55
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45
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D
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Silence
Zone
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50
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40
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Note
:
1.
Day time is reckoned in between 6.00 a.m. and 10.00 p.m.
2.
Night time is reckoned in between 10.00 p.m. and 6.00 a.m.
3.
Silence Zone is an area comprising not less than 100 m around hospitals,
educational institutions,
courts, religious places
or any other area which is declared as such by the competent authority.
4.
Mixed categories of areas may be declared as one of the four above
mentioned categories
by the competent authority.
*
dB(A) Leq denotes the time weighted average of the level of sound in
decibels on scale A
which is relatable to human hearing.
“decibel”
is a unit in which noise is measured.
“A”, in
dB(A) Leq, denotes the frequency weighting in the measurement of noise
and
corresponds to frequency response characteristics of the human ear.
“Leq”
is the energy mean of the noise level over a specified period.
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-
PRIMARY
WATER QUALITY CRITERIA FOR BATHING WATER
GSR
742(E) dated 25.9.2000.
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Sl.
No.
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Criteria
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Rationale
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Parameter
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Unit
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Limit
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1
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Faecal
coliform
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Desirable
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MPN/100
ml
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500
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To
ensure low sewage contamination. Faecal coliform and Faecal streptococci
are considered as they reflect the bacterial pathogenicity.
The
desirable and permissible limits are suggested to allow for fluctuation
in environmental conditions such as seasonal change, change in
flow condition etc.
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Maximum
permissible
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MPN/100
ml
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2500
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4
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Faecal
streptococci
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Desirable
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MPN/100
ml
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100
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Maximum
permissible
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MPN/100
ml
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500
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3
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pH
|
-
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6.5
to 8.5
|
The
range gives protection to the skin and delicate organs like the
eye, nose, ears etc. which are directly exposed during outdoor
bathing.
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4
|
Dissolved
Oxygen
|
mg/l,
min.
|
5
|
This
minimum dissolved oxygen concentration ensures freedom from oxygen
consuming organic pollution immediately upstream which is necessary
for preventing production of anaerobic gases from sediment.
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5
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Biochemical
Oxygen Demand (3 days at 270 C)
|
mg/l,
max.
|
3
|
This
biochemical oxygen demand of 3 mg/l or less ensures reasonable
freedom from oxygen demanding pollutants and prevent production
of obnoxious gases.
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