Water Quality Standards:Inland Surface

Sr.No

Parameter

Standard

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

32

33

34

35

       

Colour and odour

Suspended Solids, mg/l, Max

Particle size of suspended solids

Dissolved solids (inorganic), mg/a, mac

pH value

Temperature oC, Max

Oil and grease, mg/l, max

Total residual chlorine, mg/l, Max.

Ammonical nitrogen (as N), mg/l, Max.

Total Kjeldahl nitrogen (as N), mg/l, Max.

Free Ammonia (as NH3), mg/l, Max.

BOD (5 days at 20oC) Max.

COD mg/l, Max.

Arsenic (as As), mg/l, Max.

Mercury (as Hg), mg/l, Max.

Lead (as Pb), mg/l, Max.

Cadmium (as Cd), mg/l, Max.

Hexavalent chromium (as Cr+6) mg/l, Max.

Total chromium as (Cr), mg/l, Max.

Copper (as Cu), mg/l, Max.

Zinc (as Zn), mg/l, Max.

Selenium (as Se), mg/l, Max.

Nickel (as Ni), mg/l, Max.

Boron (as B), mg/l, Max.

Percent Sodium, Max.

Residual sodium carbonate, mg/l, Max.

Cyanide (as CN), mg/l, Max.

Chloride (as Cl), mg/l, Max.

Fluoride (as F), mg/l, Max.

Dissolved Phosphates (as P), mg/l, Max.

Sulphate (as SO4), mg/l, Max.

Sulphide (as S), mg/l, Max.

Pesticides

Phenolic compounds (as C6H5OH), mg/l, Max.

Radioactive materials

(a) Alpha emitters MC/ml, Max.

(b) Beta emitters uc/ml, Max.

Ref **1

100

Ref ** 2

2100

5.5 to 9.0

Ref ** 3

10

1.0

50

100

5.0

30

250

0.2

0.01

0.1

2.0

0.1

2.0

3.0

5.0

0.05

3.0

2.0

0.2

1000

2.0

5.0

1000

2.0

Absent

1.0

 

10-7

10-6

                  The standards mentioned in this notification shall apply to all the Effluents discharged such as industrial mining and mineral processing activities municipal sewage etc.

Ref **1 — All efforts should be made to remove colour and unpleasant  odour as far as practicable.

Ref **2 — Shall pass 850 micron IS Sieve.

Ref **3 — Shall not exceed 40 in any section of the stream within 15 meters down stream from the effluent outlet.

 

Author: T.P.Sivanandan

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