Quality Standards



Chapter 9

RELEVANT INDIAN STANDARDS

Table 9.1. Surface Water Quality Standards (as per IS: 2296).

Class A – Drinking water without conventional treatment but after disinfection. Class B – Water for outdoor bathing. Class C – Drinking water with conventional treatment followed by disinfection. Class D – Water for fish culture and wild life propagation. Class E – Water for irrigation, industrial cooling and controlled waste disposal. (Unobj = Unobjectionable).

Sl Parameter and Unit A B C D E
1 Taste None -- -- -- --
2 Odour Unobj -- -- -- --
3 Colour (True) (Hazen unit) 10 300 300 -- --
4 pH (max) (min : 6.5) 8.5 8.5 8.5 8.5 8.5
5 Conductivity (25oC) uS/cm -- -- -- 1000 2250
6 DO (mg/L) (minimum) 6 5 4 4 --
7 BOD (3d, 27oC) (mg/L) 2 3 3 -- --
8 Total Coliforms (MPN/100 mL) 50 500 5000 -- --
9 TDS (mg/L) 500 -- 1500 -- 2100
10 Oil and Grease (mg/L) -- -- 0.1 0.1 --
11 Mineral oil (mg/L) 0.01 -- -- -- --
12 Total Hardness (mg/L as CaCO3) 300 -- -- -- --
13 Chlorides (mg/L as Cl) 250 -- 600 -- 600
14 Sulfates (mg/L as SO4) 400 -- 400 -- 1000
15 Nitrates (mg/L as NO3) 20 -- 50 -- --
16 Free CO2 (mg/L ) -- -- -- 6 --
17 Free NH3 (mg/L as N) -- -- -- 1.2 --
18 Fluorides (mg/L as F) 1.5 1.5 1.5 -- --
19 Calcium (mg/L) 80.1 -- -- -- --
20 Magnesium (mg/L) 24.28 -- -- -- --
21 Copper (mg/L) 1.5 -- 1.5 -- --
22 Iron (mg/L) 0.3 -- 50 -- --
23 Manganese (mg/L) 0.5 -- -- -- --

24

Zinc (mg/L)

15

--

15

--

--

25

Boron (mg/L as B)

--

--

--

--

2

26

Barium (mg/L)

1

--

--

--

--

27

Silver (mg/L)

0.05

--

--

--

--

28

Arsenic Total (mg/L)

0.05

0.2

0.2

--

--

29

Mercury (mg/L)

0.001

--

--

--

--

30

Lead (mg/L)

0.1

--

0.1

--

--

31

Cadmium (mg/L)

0.01

--

0.01

--

--

32

Chromium (VI) (mg/L)

0.05

0.05

0.05

--

--

33

Selenium (mg/L)

0.01

--

0.05

--

--

34

Cyanide (mg/L as CN)

0.05

0.05

0.05

--

--

35

Phenols (mg/L)

0.002

0.005

0.005

--

--

36

Anionic detergents (mg/L as MBAS)

0.2

1

1

--

--

37

PAH (mg/L)

0.2

--

--

--

--

38

Pesticides (ug/L)

0

--

--

--

--

39

Insecticides (ug/L)

--

--

0

--

--

40

Alpha emitters (10-6uC/mL)

0.001

0.001

0.001

0.001

0.001

41

Beta emitters (10-6uC/mL)

0.01

0.01

0.01

0.01

0.01

42

Percent Sodium (%)

--

--

--

--

60

43

Sodium Absorption Ratio

--

--

--

--

26

Table 9.2. Drinking Water Quality Standards (IS: 10500)

[* represents essential characteristics of drinking water)

SI Parameters  and  Units Standards
1 Color (True) (Hazen  Units) 5 *
2 Taste Agreeable *
3 Odour Unobjectionable *
4 Turbidity (NTU) 5 *
5 PH 6.5- 8.5 *
6 Total Coliforms (MPN/100 mL) 0
7 TDS  (mg/L) 500
8 Mineral  Oil (mg/L) 0.01
9 Total Hardness  (mg/L as  CaCO3 ) 300
10 Alkalinity ( mg/L as  CaCO3) 200
11 Chlorides 250
12 Sulfates  (mg/L as  SO4) 200
13 Nitrates  (mg/L as  NO3) 45
14 Free  Residual  Chlorine  (mg/L) 0.2
15 Fluorides 1
16 Calcium 75
17 Copper (mg/L as  Cu) 0.05 *
18 Iron (mg/L as  Fe) 0.3 *
19 Manganese  (mg/L as  Mn) 0.1
20 Zinc  (mg/L  as  Zn) 5
21 Boron (mg/L  as  B) 1
22 Aluminum (mg/L  as  Al) 0.03
23 Arsenic  ( Total ) (mg/L as  As) 0.05
24 Mercury (mg/L as  Hg) 0.001
25 Lead  (mg/Las  Pb) 0.05
26 Cadmium  (mg/l as  Cd) 0.01
27 Chromium (mg/L  as  Cr) 0.05
28 Selenium (mg/L  as  Se) 0.01
29 Cyanide 0.05
30 Phenolic  Compounds  (mg/L  as  C6H5OH) 0.001
31 Anionic  Detergents (mg/L  as  MBAS) 0.2
32 PAH (mg/L) 0
33 Pesticides 0
34 Alpha  Emitters (10^ - 6uc/mL) 0.0001
35 Beta  Emitters  (106-6uc/mL) 0.001
36 Pathogenic  Organisms  or  Virus 0

Table 9.3. General Standards for Discharge of Effluents.

[N1 = shall not exceed 5oC above the receiving water temperature, N2 = all efforts should be made to remove colour and unpleasant odour as far as practicable, N3 = 90% survival of fish after 96 hours in 100% effluent, N4 = applicable to DDT, endosulfan, carbaryl, malathion, phenothoate, methyl parathion, phenitrothion, phorate, pyrethrum and BHC, N5 = floatable solids 3 mm and settleable solids 850 micron]

Sl Parameter and Unit Into surfacewater Into public sewers Into irrigation water Into coastal water
1 Temperature N1 -- -- N1
2 Odour N2 -- N2 N2
3 Colour (True) (Hazen units N2 -- N2 N2
4 pH (max) (min : 6.5) 5.5-9.0 5.5-9.0 5.5-9.0 5.5-9.0
5 BOD (3d, 27oC) (mg/L) 30 350 100 100
6 COD (mg/L) 250 -- -- 250
7 TSS (mg/L) 100 600 200 *100
8 TDS (mg/L) 2100 -- 2100 --
9 Oil and Grease (mg/L) 10 20 10 20
10 Chlorides (mg/L as Cl) 1000 1000 600 --
11 Sulfates (mg/L as SO4) 1000 1000 1000 --
12 Nitrates (mg/L as NO3) 10 -- -- 20
13 Total Residual Chlorine (mg/L) 1 -- -- 1
14 Free NH3 (mg/L as N) 5 -- -- 5
15 Ammoniacal  Nitrogen (mg/L N) 50 50 -- 50
16 TKN (mg/L as N) 100 -- -- 100
17 Fluorides (mg/L as F) 2 15 -- 15
18 Sulfide (mg/L as S) 2 -- -- 5
19 Dissolved Phosphates (mg/L P) 5 -- -- --
20 Copper (mg/L) 3 3 -- 3
21 Iron (mg/L) 3 3 -- 3
22 Manganese (mg/L) 2 2 -- 2
23 Zinc (mg/L) 5 15 -- 15
24 Nickel (mg/L) 3 3 -- 5
25 Boron (mg/L as B) 2 2 2 --
26 Arsenic Total (mg/L)   0.2 0.2 0.2
27 Mercury (mg/L)   0.01 0.01 0.01
28 Lead (mg/L)   1 -- 1
29 Cadmium (mg/L) 2 1 -- 2
30 Chromium (VI) (mg/L)   2 -- 1
31 Chromium Total (mg/L) 2 2 -- 2
32 Selenium (mg/L)   0.05 -- 0.05
33 Vanadium (mg/L)   0.2 -- 0.2
34 Cyanide (mg/L as CN)   2 0.2 0.2
35 Phenols (mg/L) 1 5 -- 5
36 Pesticides (ug/L) (N4) 10 10 -- 10
37 Alpha emitters (10- 6uC/mL) 10-Jul 10 10 10
38 Beta emitters (10-6uC/mL)   10-Jun 10-Jul 10-Jun
39 Percent Sodium (%)   60 60 --
40 Residual Sodium Carbonate(mg/L)   -- 5 --
41 Bio-assay (% 96 hour survival)   N3 N3 N3
42 SS particle size (pass IS sieve)   -- -- N5

Table 9.4. General Standards for Discharge of Effluents (Pesticides)

Sl Pesticide Into surface water (ug/L) Into public sewers (ug/L) Into Irrigation water(ug/L) Into coastal water (ug/L)
1 Benzene  hexachloride 10 -- 10 10
2 Carbaryl 10 -- 10 10
3 DDT 10 -- 10 10
4 Endosulfun 10 -- 10 10
5 Diamethoate 450 -- 450 450
6 Penitrothion 10 -- 10 10
7 Malathion 10 -- 10 10
8 Phorate 10 -- 10 10
9 Methyl  parathion 10 -- 10 10
10 Phenthoate 10 -- 10 10
11 Pyrethrums 10 -- 10 10
12 Copper oxychloride 9600 -- 9600 9600
13 Copper sulphate 50 -- 50 50
14 Zirum 1000 -- 1000 1000
15 Sulphur 30 -- 30 30
16 Paraquat 2300 -- 2300 2300
17 Proponil 7300 -- 7300 7300
18 Nitrogen 790 -- 790 790

Table 9.5. National Ambient Air Quality Standards

[As Notified on 11th April, 1994 by the Central Pollution Control Board in exercise of its power conferred under section 16 (2) (h) of the Air (Prevention and Control of Pollution) Act, 1981 (14 of 1981)]

Pollutant Time-weighted average Concentration (ug/m3) in ambient air  
    Industrial area  Residential, Rural and other areas Sensitive area
Sulfur Dioxide (SO2)
 
Annual * 80 60 15
24 hours # 120 80 30
Nitrogen Oxides (as NO2)
 
Annual* 80 60 15
24 hours # 120 80 30
Suspended Particulate Matter (SPM)
 
Annual * 360 140 70
24 hours # 500 200 100
Respirable Particulate Matter (RPM)
 
Annual * 120 60 50
24 hours # 150 100 75
Lead  (Pb) Annual
 
Annual * 1 0.75 0.5
24 hours # 1.5 1 0.75
Carbon Monoxide (CO)
 
8 hours * 5 2 1
1 hour 10 4 2

Annual Arithmetic Mean of minimum 104 measurements in a year taken twice a week 24-hourly 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.

Table 9.6. Ambient Air Quality Standards in respect of Noise

(As adopted in India by Ministry of Environment and Forests)

Area code Category of Areas Noise limits in dB(A) as Leq
    Day Time Night Time
(A) Industrial 75 70
(B) Commercial 65 55
(C) Residential 55 45
(D) Silence zone 50 40

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