ENVIRONMENT PROTECTION RULES 1986
 
SCHEDULE - VI
[See rule 3A]

GENERAL STANDARDS FOR DISCHARGE OF ENVIRONMENT POLLUTANTS PART A: EFFLUENTS

 
S.No. Parameter
Standards
Inland surface Water Public Sewers Land for irrigation Marine coastal areas
 (a)  (b)  (c) (d)
1. Colour and odour  See 6 of Ainnexure-I --  See 6 of Annexure-I See 6 of Annexure-I
2. Suspended solids mg/l, Max. 100 600 200 a) For process waste water-100
(b) For cooling water effluent 10 per cent above total suspended matter of influent
3. Particular size of suspended solids Shall pass 850    micron IS Sieve  -  -  (a) Floatable solids,max. 3 mm
(b)Settleable solids,max 850 microns
14. *** * --- *** ---
5. pH value   5.5 to 9.0  5.5 to 9.0 5.5 to 9.0 5.5 to 9.0
6. Temperature shall not exceed 5°C above the receiving water temperature  --  ***  shall not exceed 5°C above the receiving water temperature
7. Oil and grease mg/l Max. 10 20 10 20
8. Total residual chlorin mg/l Max. 1.0   -   -  1.0
9. Ammonical nitrogen (as N),mg/l Max. 50 50 50
10. Total Kjeldahl nitrogen (as NH3): mg/1,Max. 100  -  100
11. Free ammonia
(as NH3) mg/l, max.
5.0   5.0
12. Biochemical oxygen demand (5 days at 20°C, mg/l max. 30 350 100 100
13. Chemical Oxygen demand, mg/l Max. 250  -  250
14. Arsenic (as As), mg/l max. 0.2  0.2 0.2  0.2
15. Mercury (As Hg), mg/l Max. 0.01  0.01  0.01
16. Lead (as Pb) mg/l, Max. 0.1  1.0 2.0
17. Cadmium (as cd) mg/l,Max. 2.0  1.0 2.0
18.  Hexavalent chromium (as Cr+6), mg/l, Max. 0.1  2.0  1.0
19. Total chromium as Cr) mg/l, Max 2.0  2.0  2.0
20. Copper (as Cu) mg/l, Max. 3.0  3.0  3.0
21. Zine (as Zn) mg/l, Max. 5.0  15  15
22. Selenium (as Sc.) mg/l, Max. 0.05  0.05  0.05
23. Nickel (as Ni) mg/l, Max. 3.0  3.0  5.0
124. ***
125. ***
1.26. ***
27. Cyanide (as CN), mg/l Max. 0.2  2.0  0.2  0.2
28. ***
29. Fluoride(as F) mg/l Max. 2.0  15 15
30. Dissolved phosphates (as P), mg/l Max. 5.0   -
131. *** 
32. Sulphide (as S) mg/l Max. 2.0  5.0
33. Phenoile compounds (as C6H5OH) mg/l max. 1.0  5.0  5.0
34. Radioactive materials:
(a) Alpha emitter micro curie/ml 10-7  10-7  10-8  10-7
(b) Beta emitter microcurie/ml 10-6  10-6 10-7  10-6
35. Bio-assay test  90% survival of fish after 96 hours in 100% effluent 90% survival of fish after 96 hours in 100% effluent 90% survival of fish after 96 hours in 100% effluent 90% survival of fish after 96 hours in 100% effluent
36. Manganese (as Mn), 2 mg/l  2 mg/l  - 2 mg/l
37. Iron (as Fe)  3 mg/l  3 mg/l  - 3 mg/l
38. Vanadium (as V)  0.2 mg/l 0.2 mg/l  - 0.2 mg/l
39. Nitrate Nitrogen  10 mg/l   -  20 mg/l
140. *** * * * *

1 Omitted by Rule 2(d)(i) of the Environment (protection Third Amendment Rules, 1993 vide Notification No. G.S.R. 801(E) dated 31.12.1993
 
 

S.No. Industry  Quantum 
1.  Integrated Iron & Steel  16m3/tonne of finished steel
2.  Sugar  0.4m3/tonne of cane crushed 
3.  Pulp & Paper Industries :
(a) Larger pulp & paper 
  (i)  Pulp & Paper  175m3/tonne of paper produced 
  (ii) Viscose Staple Fibre  150m3/tonne of product.
  (iii) Viscose Filament Yarn  500m3/tonne of product.
(b) Small pulp & paper:
  (i) Agro-residue based  150m3/tonne of paper product 
  (ii) Waste paper based  50m3/tonne of paper product 
4. Fermentation Industries :
(a) Maltry  3.5m3/tonne of grain produced 
(b) Brewery  0.25m3/KL of beer produced 
(c) Distillery 12m3/KL of alchol produced 
5. Caustic Soda 
(a) Membrane cell process 1m3/tonne of caustic soda produced exclusing cooling tower blowdown 
(b) Mercury cell process  4m3/tonne of caustic soda produced (mercury bearing) 10% blowdownpermitted for cooling tower
6. Textile Industries :
Man-made fibre 
  (i) Nylon & Polyster  120m3/tonne of fibre produced 
  (ii) Vixcose rayon  150m3/tonne of product 
7. Tanneries  28m3/tonnne of raw hide 
8. Starch. Glucose and related products  8m3/tonne of maize crushed 
9. Dairy 3m3/KL of Milk
10. Natural rubber procesing industry  4m3/tonne of rubber 
11.  Fertilizer 
(a) Straight nitrogenous fertilizer  5m3/tonne of urea or equivalent produced 
(b) Straight phosphatic fertilizer(SSP & TSP) excluding manufacture of any acid  0.5m3/tonne of SSP/TSP
(c) Complex fertilizer  Standards of nitrogenous and phosphatic fertilizers are applicable depending on the primary product 

LOAD BASED STANDARDS PART C

1. Oil Refinery Industry :
 
Parameter processed  Quantum in kg/1000 tonnes of crude
Oil & grease  10.00
Phenol 0.70
BOD 10.50
Suspended solids  14.00
Sulphide  0.35

2. Large Pulp & Paper, News Print/Rayon garde plants of capacity above 24000 tonne/Annum 
 
Parameter Quantum 
Total Organic Chloride (TOCI) 2kg/tonne of product 

GENERAL EMISSION STANDARDS PART-D

1. Concentration Based Standards 
 

Sl.No. Parameter  Standard Concentration not to exceed (in mg/Nm3
1. Particulate Matter (PM) 150
2. Total Fluoride  25
3. Asbestos 4 Fibres/cc and dust should not be more than 2mg/Nm3
4. Mercury 0.2
5. Chlrine  15
6. Hydrochloride acid vapour and mist  35
7. *** *
8. Sulphuric acid mist  50
9. Carbon monoxide  1% max.(v/v)
10. *** *
11. Lead  10 mg/Nm3
12. *** *

II. Equipment based standards 
 
 

Sl.No. Parameter  Standard 
1. Sulphur dioxide  Stack-height limit in metre 
(i) Power generation capacity :
--500MW and more  275
--200/210 MW and above to less than 500 MW 220
--less than 200/210 MW H=14(Q)0.3
(ii) Steam generation capacity 
--Less than 2 tonne/h Less than 8.5 MT 9
--2 to 5 tonne/h 8.5 to 21 MT 12
--5 to 10 tonne/h 21 to 42 MT 15
--10 to15 tonne/h 42 to 64MT 18
--15 to 20 tonne/h 64 to 104 MT 21
--20 to 25 tonne/h 104 to 105 MT 24
--25 to 30 tonne/h 105 to 126 MT 27
--More than 30 tonne/h More than 126 MT
or using the formula H=14(Q)0.3
30
Note : H-Physical height of the stack in metre 
           Q- Emission rate of SO2 in kg/hr

III. Load/Mass-Based Standards
 

Sl.No. Industry  Parameter  Standard 
1. Fertiliser (Urea)
Commissioned Prior to 1.1.82 Particulate Matter (PM) 2 kg/tonne of product 
Commissioned after 1-1-82 Particulate MAtter (PM) 0.5kg/tonne of product 
2. Copper, Lead and Zinc Smelter/converter  Sulphur dioxide  4 kg/tonne of concentrated (100%) acid produced
3. Nitric Acid  Oxides of Nitrogen  3 kg/tonne of weak acid (before concentration) produced 
4. Sulphuric Acid  Sulphur dioxide  4 kg/tonne of concentrated (100%) acid produced 
5. Coke Oven  Carbon monoxide  3 kg/tonne of coke produced 
6. Oil Refineries 
(a) For the oil refineries, the following standards shall be applicable.
Process  Parameter  Standard 
--Distillation (Atmospheric plus vacuum  Sulphur dioxide  0.25 kg/tonne of feed in this process 
--Catalytic cracker  -do- 2.5kg/MT of feed in this process
--Sulphur Recovery Unit  -do- 120 Kg/MT of Sulphur in the feed 
7.  Aluminium Plants :
(i) Anode Bake Oven  Total Fluoride  0.3Kg/MT of Aluminium
(ii) Pot room 
(a) VSS -do- 4.7Kg/MT of Aluminium 
(b)HSS -do- 6 Kg/MT of Aluminium
(c)PBSW -do- 2.5Kg/MT of Aluminium 
(d)PBCW -do- 1.0Kg/MT of Aluminium 
Note : VSS = Vertical Stud Soderberg
          HSS = Horizontal Stud Sodeerberg
          PBSW = Pre Backed Side Work
          PBCW = Pre Backed Centre Work
8. Glass Industry : 
(a) Furnace Capacity 
  (i) Up in the product draw capacity 
      of 60 MTD/Day
Particulate matter  2 Kg/hr ca 
 (ii) Product draw capacity more than 
      60 MT/Day 
-do- 0.8 Kg/MT of Product drawn 

NOISE STANDARDS PART-E

A.  Noise Limits for Automobiles (Free Field Distance at 7.5 Metre in dB(A) at the manufacturing Stage 
 

(a) Motorcycle,Scooters & Three Wheelers  80
(b) Passenger Cars  82
(c) Passenger or Commercial vehicles upto 4 MT 85
(d) Passenger or Commercial vehicles above 4 MT and upto 12 MT 89
(e) Passenger or Commercial vehicles exceeding 12 MT 91

B. Domestic appliances and construction equipments at the manufacturing stage to be achieved by 31st December, 1993.
 

(a) Window Air Conditioners of 1 ton to 1.5 ton  68
(b) Air Coolers 60
(c) Refrigerators 46
(d) Diesel generator of domestic purposes  85-90
(e) Compactors (rollers), Front Loaders,Concrete mixers, Cranes (moveable), Vibrators and Saws 75

 
ANNEXURE-I
(For the purposes of Parts-A, B and C)


The State Boards shall follow the following guidelines in enforcing the standards specified under schedule VI:-

1. The wastewaters and gases are to be treated with the best available technology (BAT) in order to achieve the 
     prescribed standards.
2. The industries need to be encouraged for recycling and reuse of waste materials as far as practicable in order 
    to minimise the discharge of wastes into the environment.
3. The industries are to be encouraged for recovery of biogas, energy and reusable materials.
4. While permitting the discharge of effluents and emissions into the environment, State Boards have to take into 
   account the assimilative capacities of the receiving bodies, especially water bodies so that quality of the 
   intended use of the receiving waters is not affected. Where such quality is likely to be affected, discharges 
   should not be allowed into water bodies.
5. The Central and State Boards shall put emphasis on the implementation of clean technologies by the industries 
   in order to increase fuel efficiency and reduce the generation of environmental pollutants.
6. All efforts should be made to remove colour and unpleasant odour as far as practicable.
7. The standards mentioned in this Schedule shall also apply to all other effluents discharged such as industrial 
    mining, and mineral processing activities and sewage.
8. The limit given for the total concentration of mercury in the final effluent of caustic soda industry, is for the 
    combined effluent from (a) Cell house, (b) Brine plant, (c) Chlorine handling, (d) hydrogen handling and (e) hydro 
    chloric acid plant.
9. In case of effluent containing biodegradable organic matter without toxic chemicals and pathogens, namely, 
    fermentation industry (distilleries, maltries and breweries), sugar units, dairy plants and food and fruit 
    processing units:

   (a) Limit of 500 mg/l is entitled only in case the land application is envisaged as a secondary treatment system 
        for further removal of BOD. It is to be noted that controlled and properly designed land treatment system has 
        to be adopted for this purpose taking into account soil and crop characteristics. The approval of the 
        concerned State Board is necessary prior to adopting this system.
   (b) The drainage water from the land after the secondary treatment system, as mentioned in note 9(a) has to 
        conform to the limit of 30 mg/l of BOD and 10 mg/l of Nitrate expressed as `N'.
   (c) The net addition to the ground water quality should not have a BOD more than 30 mg/l and Nitrate expressed 
        as `N' more than10 mg/l.
   (d) The BOD level may be raised upto 700 mg/l for land application as a secondary treatment system, 
        considering hydraulic loading and other soil characteristics, if regular and careful monitoring of run-off and 
        leachate satisfies the concerned State Pollution Control Boards that the BOD level higher than 500 mg/l can 
        be allowed in the effluent.
   (e) Where land application as secondary treatment system is adopted employing higher BOD in the treated 
        effluent, domestic waste should be excluded from the effluent or disinfection should form a part of the 
        treatment prior to application of the same for land treatment.
    (f) In case of distilleries, sugar, dairy, and food & fruit processing industries, adopting primary treated effluent for
        ferti-irrigation in the experimental stage, they have to adopt bio-digesters for recovery of methane gas as 
        primary treatment prior to its use for ferti-irrigation.

10. All effluents discharged including from the industries such as cotton textile, composite woolen mills, synthetic 
     rubber, small pulp & paper, natural rubber, petrochemicals, tanneries, paint,dyes, slaughter houses, food & 
     fruit processing and diary industries into surface waters shall conform to the BOD limit specified above, 
     namely,  30 mg/l. For discharge of an effluent having a BOD more than 30 mg/l, the standards shall conform to
      those given above for other receiving bodies, namely, sewers,coastal waters and land for irrigation.

11.1[***]

12. In  case of fertilizer industry the limits in respect of chromium and fluoride shall be complied with at the outlet 
     of chromium and fluoride removal units, respectively.

13. In case of pesticides:

    (a) The limits should be complied with at the end of the treatment plant before dilution.
    (b) Bio-assay test should be carried out with the available species of fish in the receiving water, the COD limits 
         to be specified in the consent conditions should be correlated with the BOD limits.
    (c) In case metabolites and isomers of the Pesticides in the given list are found in significant concentrations, 
        standards should be prescribed for these also in the same concentration as the individual pesticides.
    (d) Industries are required to analyse pesticides in wastewater by advanced analytical methods such as 
         GLC/HPLC.

14. The chemical oxygen demand (COD) concentration in a treated effluent, if observed to be persistently greater 
      than 250 mg/l before disposal to any receiving body (public sewer, land for irrigation, inland surface water and 
      marine coastal areas), such industrial units are required to identify chemicals causing the same. In case 
      these are found to be toxic as defined in the Schedule-I of the Hazardous Rules, 1989, the State Boards in 
     such cases shall direct the industries to install tertiary treatment stipulating time limit.

15. Standards specified in Part A of Schedule-VI for discharge of effluents into the public sewer shall be applicable 
     only if such sewer leads to a secondary treatment including biological treatment system, otherwise the 
     discharge into sewers shall be treated as discharge into inland surface waters.

1 Omitted by Rule 2(k) (vii) of the Environment (Protection) Third Amendment Rules, 1993 vide G.S.R.801(E) dated 
   31.12.1993. 


ANNEXURE-II
(For the purpose of Part-D)
The States Boards shall follow the following guidelines in enforcing the standards specified under Schedule VI:

(a) In case of cement plants, the total dust (from all sections) shall be within 400 mg/Nm3 and 250 mg/Nm3 for the 
     plants upto 200 t/d and more than 200 t/d capacities, respectively.
(b) In respect of calcination process (e.g. Aluminium Plants) Kilns and step Grate Bagasse fired-Boilers, 
     Particulate Matter (PM) emissions shall be within 250 mg/Nm3.
(c) In case of thermal power plants commissioned prior to 1-1-1982 and having generation capacity less than 62.5 
     MW, the PM emission shall be within 350 mg/Nm3.
(d) In case of Lime Kilns of capacity more than 5t/day and upto 40t/day, the PM emission shall be within 500 
     mg/Nm3.
(e) In case of horse shoe/pulsating Grate and Spreader Stroker Bagasse-fired-Boilers, the PM emission shall be 
    within 500 (12% CO2) and 800 (12% CO2) mg/Nm3, respectively. In respect of these boilers, if more than 
    attached to a single stack, the emission standard shall be fixed, based on added capacity of all the boilers 
    connected with the stack.
(f) In case of asbestos dust, the same shall not exceed 2 mg/Nm3
(g) In case of the urea plants commissioned after 1-1-92, coke ovens and lead glass units, the PM emission shall 
    be within 50 mg/Nm3.
(h) In case of small boilers of capacity less than 2 tons/hr and between 2 to 5 tons/hr, the PM emissions shall be 
    within 1000 and 1200 mg/Nm3.
(i) In case of integrated Iron and Steel Plants, PM emission upto 400 mg/Nm3 shall be allowed during oxygen 
    lancing.
(j) In case of stone crushing units, the suspended PM contribution value at a distance of 40 meters from a 
    controlled, isolated as well as from a unit located in cluster should be less than 600 micrograms/Nm3. 1[* * *]
    These units must also adopt the following pollution control measures:-
    (i) Dust containment cum suppression system for the equipment;
    (ii) Construction of wind breaking walls;
    (iii) Construction of the metalled roads within the premises;
    (iv) Regular cleaning and wetting of the ground within the premises;
    (v) Growing of green belt along the periphery.

(k) In case of Ceramic industry, from the other sources of pollution, such as basic raw material and processing 
    operations, heat recovery dryers, mechanical finishing operation, all possible preventive measures should be 
    taken to control PM emission as far as practicable.

2. The total fluoride emission in respect of Glass and Phosphatic Fertilizers shall not exceed 5 mg/NM3 and 25 
    mg/NM3, respectively.
3. In case of copper, lead and zinc smelting, the off-gases may, as far as possible, be utilised for manufacturing 
    sulphuric acid
4. In case of cupolas (Foundries) having capacity (melting rate) less than 3 tonne/hour, the particulate matter 
   emissions shall be within 450 mg/Nm3. In these cases it is essential that stack is constructed over the cupolas 
   beyond the charging door and the emissions are directed through the stack, which should be atleast six times 
   the diameter of cupola. In respect of Arc Furnaces and Induction Furnaces, provision has to be made for 
   collecting the fumes before discharging the emission through the stack.
 

[No. Q-15017/24/89-CPW]
MUKUL SANWAL, Jt. Secy.