Wq Standards

8/2/2019 Wq Standards

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SOME OF THE RELEVANT STANDARDS

INDIAN STANDARD SPECIFICATIONS FOR DRINKING WATER

IS : 10500 - 1983

S.No. Substance or

Characteristics

Requirement

Desirable

Limit

Undesirable Effect

Outside the

Desirable Limit

Desirable/

Essential

Remarks

i) Colour, Hazen

Units, Max.

Above 10 Essential May be extended

to 50 only if

toxic substancesare not suspected

in absence of

alternative

sources.ii) Odour Objectionable -- Essential a) Test cold and

when

heated.b) Test at several

dilutions.

iii) Taste Agreeable -- Essential Test to be

conducted onlyafter safety has

been established.

iv) Turbidity, NTU,Max. 10 Above 10, Consumer acceptance decreases. Essential May be extendedupto 25, inabsence of

alternative

sources.

v) pH Value 6.5 to 8.5 Beyond this range thewater will affect the

mucous membrane

and/or water supply

ssytem.

Essential May be relaxedupto 9.2 in

absence of

alternative

sources.

vi) Total Hardness

(As CaCO3) mg/lMax.

300 Encrustation in water

supply structure andadverse effects on

domestic use.

Essential May be extended

upto 600 in theabsence of other

sources.

vii) Calcium (As Ca),

mg/l, Max.

75 Encrustation in water

supply structure and

adverse efffects on

domestic use.

Desirable May be extended

upto 200, in the

absence of other

sources.


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viii) Magnesium (as

Mg), mg/l, Max.

30 Encrusation in water

supply structure and

adverse effects ondomestic use.

Desirable May be extended

upto 100, in the

absence of othersources.

ix) Copper (As Cu),

mg/l, Max.

0.05 Astringent taste, dis-

colouration andcorrosion of pipes

fittings and utensils

will be caused beyond

this.

Desirable May be relaxed

upto 1.5.

x) Iron (As Fe),mg/l, Max.

0.3 Beyond this limittaste/appearance are

affected & has

adverse effect ondomestic uses and

water structures, and

promotes iron becteria

Essential May be extendedupto 1.0 in

absence of

alternativesources.

xi) Manganese (AsMn), mg/l, Max.

0.1 Beyond this limit,taste/appearance are

affected on domestic

uses and water supplystructure.

Desirable May be extendedup to 0.5 where

alternate source

is not available.

xii) Sulphate (As

SO4), mg/l, Max.

250 Beyond this causes

gastrointestinal

irrigation whenmagnesium of sodium

are present .

Essential May be extended

up to 400

providedmagnesium (as

Mg) does notexceed 30.

xiii) Chloride (As Cl),mg/l, Max.

250 Beyond this limit,taste, corrosion and

palatability are

affected

Essential May be extendedup to 1000 in the

absence of other

alternate

sources.

xiv) Nitrate (As

NO3)mg/l, Max.

45 Beyond this

mathemoglobinaemia

takes place.

Desirable No relaxation

xv) Fluoride (As F),mg/l

0.6 to 1.2 Low floride level arelinked with dental

carries above 1.5 it

may cause fluorosis.

Desirable If the limit isbelow 0.6 water

source should be

rejected but

suitable publichealth measures

should be taken.


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Maximum limit

may be extended

to 1.5 if nobetter alternate

source isavailable.

xvi) PhenolicCompounds (As

C6H5HO), mg/l,

Max.

0.001 Beyond this it maycause objectionable

taste and odour.

Desirable May be relaxedup to 0.002.

xvii) Mercury (as Hg)mg/L, Max.

0.001 Beyond this the water becomes toxic.

Desirable No relaxation ofthis limit is

allowed to be

tested when

pollution issuspected.

xviii) Cadmium (as

Cd), mg/l, Max.

0.01 Beyond this the water

becomes toxic.

Desirable No relaxation of

this limit is

allowed to betested when

pollution is

suspected.

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



allowed to be

tested whenpollution is

suspected.

xx) Arsenic (as As)

mg/l, Max.


becomes toxic.


this limit isallowed to be

tested when

pollution issuspected

xxi) Cyanide (as Cn)

mg/l, Max.


becomes toxic.


this limit is

allowed to betested when

pollution is

suspected.

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



allowed to be


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tested when

pollution is

suspected .

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

5.0 Beyond this limit itcan cause astringent

taste and anopalescence in water.

Desirable May be relaxed upto 10.0. To be

tested whenpollution is

suspected.

xxiv) Anionic detergents(as MBAS), mg/l,

Max.

0.2 Beyond this limit it

can cause a light frothin water.


up to 1.0. To betested when

pollution is

suspected.

xxv) Chromium (asCr+6) mg/l, Max.

0.05 May be carcinogenic. Desirable--

xxvi) Mineral Oil mg/l,

Max.

0.01 Beyond this limit

undesirable taste andodour after

chlorination takes

place.


up to 0.03. To betested whenpollution is

suspected

xxvii) Residual free

chlorine mg/l,Max.

0.2 -- Essential To be applicable

only when wateris chlorinated.

Tested at

consumer end.When protection

against viral

infection is

required, itshould be min.

0.5 mg/L.

WHO GUIDELINES FOR DRINKING WATER CONSTITUENTS

MICROBIOLOGICAL AND BIOLOGICAL QUALITY

Organism Unit Guideline

Value

Remarks

I. Microbiology quality

A. Piped water supplies


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AI. Treated water entering the distribution system

Faecal coliforms Number/100

ml

0 Turbidity 1 NTU: for disinfection with chlorine pH pr

8.0: free chlorine residual 0.2-0.5 mg/l following 30 m

contact.

A2. Untreated water entering the distribution system


ml

0

Coliform organisms Number/100

ml

0 In 98% of samples examined throughout the year in th

large supplies when sufficient samples are examined.


ml

3 In an occasional sample, but not in consecutive sampl

A3. Water in the distribution system


ml

0


ml

0 In 95% of samples examined throughout the year in th

large supplies when sufficient samples are examined.


ml

3 In an occasional sample, but not in consecutive sampl

B. Unpiped water supplies


ml

0

Coliforms Number/100

ml

0 Should not occur repeatedly if occurrence is frequent

sanitary protection can not be improved, an alternative

must be found if possible.

C. Bottled drinking water

Faecal coliforms Number/100ml

0 Source should be free from faecal contamination

Coliforms Number/100ml

0

D. Emergency water supplies


ml

0 Advise public to boil water in case of failure to meet

values


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Coliforms Number/100

ml

0

INORGANIC CONSTITUENTS OF HEALTH SIGNIFICANCE

Constituents Units Guideline value Remarks

Arsenic mg/l 0.05

Cadmium mg/l 0.005

Chromium mg/l 0.05

Cynide mg/l 0.1

Fluoride mg/l 1.5 Natural or deliberately added; local or climatic conditions may necessitate

adaptation.

Lead mg/l 0.05

Mercury mg/l 0.001

Nitrate mg/l 10

Selenium mg/l 0.01

ORGANIC CONSTITUENTS OF HEALTH SIGNIFICANCE


Aldrin and dieldrin g/l 0.03

Benzene g/l 10

Benzo pyrene g/l 0.01

Carbon tetrachloride g/l 3.0 Tentative guideline value

Chlordane g/l 0.3

Chloroform g/l 30 Disinfection efficiency must not becompromised when controlling

chloroform content.


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2, 4-D g/l 100

DDT g/l 1.0

1, 2 dichloroethane g/l 10

1, 1 dichloroethane g/l 0.3

Heptachlor and

Heptachlor epoxide

g/l 0.1

Hexa-chlorobenzene g/l 0.01

Gamma-HCH

(lindane)

g/l 3.0

Methoxychlor g/l 30

Pentachlorophenol g/l 10

Tetrachlorophenol g/l 10

Trichloroethene g/l 30 Tentative guideline value

2, 4, 6

trichlorophenol

g/l 10 Odour threshold concentration 0.1 g/l

AESTHETIC QUALITY


Aluminium Mg/l 0.2

Chloride Mg/l 250

Colour(true colour) Mg/l 15

Copper Mg/l 1.0

Iron Mg/l 0.3

Hardness(as CaCO3) Mg/l 500

Manganese Mg/l 0.1

pH Mg/l 6.5-8.5


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Sodium Mg/l 200

Solids total dissolved Mg/l 1000

Sulfate Mg/l 400

Taste and odour Mg/l Inoffensive to most

consumers.

Turbidity Nephelometric turbidity

units(NTU)

5.0 Preferably 1 for disinfection

efficiency.

Zinc Mg/l 5.0

RADIOACTIVE CONSTITUENTS


Gross alpha activity Bq/l 0.1 (a) If the levels are exceeded more detailed radionuclide a

be necessary.

Gross beta activity Bq/l 1.0 (b) Higher levels do not necessarily imply that the water i

for human consumption.

PRIMARY WATER QUALITY CRITERIA

Designated Best Use Class of Water Criteria

Drinking water source with out

conventional treatment but after

disinfection.

A 1. Total Coliform organised MPN/100 ml shall be

less

2. pH between 6.5 and 8.53. Dissolved Oxygen 6 mg/l or more

4. Biochemical Oxygen Demand 5 days at 20oC, 2

less.

Outdoor bathing (Organised) B 1. Total Coliform organised MPN/100 ml shall beless

2. pH between 6.5 and 8.5

3. Dissolved Oxygen 5 mg/l or more4. Biochemical Oxygen Demand 5 days at 20oC,3

less .

Drinking Water Source C 1. Total Coliform organised MPN/100 ml shall be

less

2. pH between 6.0 and 9.0

3. Dissolved Oxygen 4 mg/l or more

4. Biochemical Oxygen Demand 5 days at 20oC,3


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less.

Propagation of Wild Life Fisheries D 1.pH between 6.5 and 9.52. Dissolved Oxygen 4 mg/l or less

3. Free Ammonia (as N) 1.2 mg/l or less.

Irrigation, Industrial Cooling Controlled

WasteDisposal

E 1.pH between 6.5 and 9.5

2. Electrical Conductivity at 25 microgram per cm3. Sodium absorption ratio Max. 26

4. Boron Max. 2 mg/l.

GENERAL STANDARDS FOR DISCHARGE OF

ENVIRONMENT POLLUTANTS EFFLUENTS

S.

No.

Parameters Standards for discharges into

Inlandsurface

PublicSewers

Land forirrigation

Marine coastal areas

1. Suspended solids mg/L, Max. 100 600 200 (a) For process waste water-100

(b) For cooling water effluent 10 perc

total suspended matter of influent.

2. Particular size of suspended

solids.

Shall pass

850 micron

sieve.

- (a) Floatable solids, max. 3 mm

(b) Settleable solids, max. 850 micron

3. pH value 5.5 - 9.0 5.5-9.0 5.5-9.0 5.5 9.0

4. Temperature Shall not

exceed 5oC

above thereceiving

watertemperature.

-

-

Shall not exceed 5oC above the receiv

temperature.

5. Oil and grease mg/L,Max. 10 20 10 20

6. Total residual chlorine mg/L,

Max.

1.0 - - 1.0

7. Amonical nitrogen (as N),

mg/L, Max.

50 50 - 50

8. Total Kjeldahl nitrogen (as

NH3), mg/L, Max.

100 - - 100

9. Free ammonia (as NH3) 5.0 - - 5.0


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mg/L, Max.

10. Biochemical Oxygen demand(5 days at 20oC),mg/L, Max.

30 350 100 100

11. Chemical Oxygen demand,

mg/L, Max.

250 - - 250

12. Arsenic (as As), mg/L, Max. 0.2 0.2 0.2 0.2

13. Mercury (as Hg), mg/L, Max. 0.01 0.01 - 0.01

14. Lead (as Pb), mg/L, Max. 0.1 1.0 - 2.0

15. Cadmium (as Cd), mg/L,

Max.

2.0 1.0 - 2.0

16. Hexavalent chromium (as

Cr+6

), mg/L, Max.

0.1 2.0 - 1.0

17. Total chromium (as Cr),

mg/L, Max.

2.0 2.0 - 2.0

18. Copper (as Cu), mg/L, Max. 3.0 3.0 - 3.0

19. Zinc (as Zn), mg/L, Max. 5.0 15 - 15

20. Selenium (as Se), mg/L, Max. 0.05 0.05 - 0.05

21. Nickel (as Ni), mg/L, Max. 3.0 3.0 - 5.0

22. Cyanide (as CN), mg/L, Max. 0.2 2.0 0.2 0.2

23. Florides ( as F), mg/L, Max. 2.0 15 - 15

24. Sulphide (as S), mg/L, Max. 2.0 - - 5.0

25. Phenolic compounds (as

C6H5OH), mg/L, Max.

1.0 5.0 - 5.0

26. Radioactive materials

(a) Alpha emitter Micro

curie/ml

(b) Beta emitterMicrocurie/ml

10-7

10-6

10-7

10-6

10-8

10-7

10-7

10-6

27. Bio-assay test 90%

survival of

fish after 96

hours in

100%

effluent.

90%

survival

of fish

after 96

hours in

100%

90% survival of fish after 96 hours in

effluent.


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effluent.

28. Manganese (Mn) 2 mg/L 2 mg/L - 2 Mg/L

29. Iron (as Fe) 3 mg/L 3 mg/L - 3 mg/L

30. Vanadium (as V) 0.2 mg/L 0.2

mg/L

- 0.2 mg/l

31. Nitrate Nitrogen 10 mg/L - - 20 mg/L

AMBIENT AIR QUALITY STANDARDS

Pollutant

Time

Weighted

Average

Concentration in Ambient Air

Industrial

Area

Residential,

Rural &

Other Area

SensitiveMethod of

Measurement

Sulphur

Dioxide

Annual

Average* 24

hours**

80g/m3

120 g/m360g/m3

80 g/m315g/m3

30 g/m3

Improved West and

Geeks method

UltravioletFluorescene

Oxides of

Nitrogen

Annual

Average* 24

hours**

80g/m3

120 g/m360g/m3

80 g/m315g/m3

30 g/m3

Jacab and Hochhwiser

modified (Na-arsenite)

method-Gas-PhaseChemilusence

SPM AnnualAverage* 24

hours**

360g/m3

500 g/m3140g/m3

200 g/m370g/m3

100 g/m3

High Volume

Sampling [Averageflow rate not less than1.1 m3/ minute]

RSPM

Annual

Average* 24

hours**

120g/m3

150 g/m360g/m3

100 g/m350g/m3

75 g/m3Respirable particulate

matter sampler

Lead

Annual

Average* 24

hours**

1.0g/m3

1.5 g/m30.75g/m3

1.0 g/m30.50g/m3

0.75 g/m3

AAS method aftersampling using EPM

2000 or equivalent

filter paper

Carbon

Monoxides

AnnualAverage* 24

hours**

5.0 mg/m3

10.0 mg/m32.0 mg/m3

4.0 mg/m31.0 mg/m3

2.0 mg/m3Non disperse, infrared

spectroscopy

1 g (micro-gram) - .001 mg (milligram)

AMBIENT AIR QUALITY STANDARDS IN RESPECT OF NOISE


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Area code Category of Area Limits in dB(A)Leq

Day Time

Limits in dB(A)Leq Night Time

(A) Industrial area 75 70

(B) Commercial area 65 55

(C) Residential area 55 45

(D) Silence Zone 50 40

EMISSION STANDARDS FOR SMALL BOILERS

S. No. Capacity of Boiler Parameters Standards

1. Less than 2 ton/hr Particulate matter 1600

2. 2 to 5 ton/hr Particulate matter 1200

3. More than 15 ton/hr Particulate matter 150

NOISE LIMITS FOR DOMESTIC APPLIANCES AND CONSTRUCTION

EQUIPMENT AT THE MANUFACTURING STAGE

S. No. Category Standards dB(A)

1. Window Air Conditioners of 1 ton to 1.5 ton 68

2. Air Coolers 60

3. Refrigerators 46

4. Diesel generators for domestic purposes 85-90

5. Compactors (rollers) Front loaders, Concrete mixers, Cranes(movable), Vibrators and Saws

90

STANDARDS FOR EMISSION OF SMOKE, VAPOUR ETC. FROM MOTOR

VEHICLES

Every motor vehicle shall be manufactured and maintained in such condition and shall be sodriven that smoke, visible vapour, grit, sparks, ashes, cinder or oily substance do not emit


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therefrom. On and from the 1st day of March 1990, every motor vehicle in use shall comply with thefollowing standards:-

Idling CO (Carbon monoxide) emission limit for the all four wheeled petrol driven vehiclesshall not exceed 3 percent by volume;

Idling CO emission limit for all two and three wheeled petrol driven vehicles shall not

exceed 4.5 percent by volume;

Smoke density for all diesel driven vehicles shall be as follow:-

Method of Test Maximum smoke density

Light absorption

Coefficient m-1Bosch units Hartridge units

(a) Full load at a speed of 60% to 70% of

maximum enginerated speed declared by

the

manufacture

3.1 5.2 75

(b) Free acceleration 2.3 - 65

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