Question

पिने योग्य जल की PH की सिमा क्या है?

Answer 1

भारतीय मानक ब्यूरो ने पीने लायक पानी किसे माना है। BIS 10500 : 1991 के अनुसार, पीने योग्य पानी उसे कहेंगे जिसमे निम्नलिखित बातें हो।

Sl.No Substance/Characteristic Requirement Permissible Limit(Desirable Limit)in absence of Alternate source

Essential characteristics

1Colour, ( Hazen units, Max )525

2OdourUnobjectonableUnobjectionable

3TasteAgreeableAgreeable

4Turbidity ( NTU, Max)510

5pH Value6.5 to 8.5No Relaxsation

6Total Hardness (as CaCo3) mg/lit.,Max300600

7Iron (as Fe) mg/lit,Max0.31

8Chlorides (as Cl) mg/lit,Max.2501000

9Residual,free chlorine,mg/lit,Min0.2--

Desirable Characteristics

10Dissolved solids mg/lit,Max5002000

11Calcium (as Ca) mg/lit,Max75200

12Copper (as Cu) mg/lit,Max0.051.5

13Manganese (as Mn)mg/lit,Max0.10.3

14Sulfate (as SO4) mg/lit,Max200400

15Nitrate (as NO3) mg/lit,Max45100

16Fluoride (as F) mg/lit,Max1.91.5

17Phenolic Compounds (as C 6 H5OH)0.0010.002mg/lit, Max.

18Mercury (as Hg)mg/lit,Max0.001No relaxation

19Cadmiun (as Cd)mg/lit,Max0.01No relaxation

20Selenium (as Se)mg/lit,Max0.01No relaxation

21Arsenic (as As) mg/lit,Max0.05No relaxation

22Cyanide (as CN) mg/lit,Max0.05No relaxation

23Lead (as Pb) mg/lit,Max0.05No relaxation

24Zinc (as Zn) mg/lit,Max515

25Anionic detergents (as MBAS) mg/lit,Max0.21

26Chromium (as Cr6+) mg/lit,Max0.05No relaxation

27Polynuclear aromatic hydro carbons----

(as PAH) g/lit,Max

28Mineral Oil mg/lit,Max0.010.03

29Pesticides mg/l, MaxAbsent0.001

30Radioactive Materials

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