WATER TESTING LABORATORY
A modern laboratory, is functioning since 2003 for water testing with utter satisfaction of both CENTRAL & STATE GOVERNMENT and UNICEF. Now the laboratory is working as a collaborative effort of Public Health Engineering Directorate, Govt. of West Bengal, Panchayet & Rural Development Department, Govt. of West Bengal, and Department of Health & Family Welfare, Govt. of West Bengal. Now the responsibility of the laboratory is to test all the public drinking water sources in Barasat – II and Haroa Block of North 24 Parganas District on behalf of PHEDte.
We also test the Private Samples from any where of West Bengal. Our Highly Experienced Technical Team, Chemist, Bacteriologist and Collectors are appreciated by the different department of Govt. of West Bengal as well as UNICEF. Our Science Activist are engaged to generate awareness among the people for SAFE DRINKING WATER in every Gram Panchayet of North 24 Parganas District.
We can proudly say that, Our Water Testing Laboratory is one of the best laboratory of West Bengal.
Parameter of Testing :
We also test the Private Samples from any where of West Bengal. Our Highly Experienced Technical Team, Chemist, Bacteriologist and Collectors are appreciated by the different department of Govt. of West Bengal as well as UNICEF. Our Science Activist are engaged to generate awareness among the people for SAFE DRINKING WATER in every Gram Panchayet of North 24 Parganas District.
We can proudly say that, Our Water Testing Laboratory is one of the best laboratory of West Bengal.
Parameter of Testing :
- pH
- Iron
- Total Hardness
- Total Dissolved Solids
- Electro Conductivity
- Manganise
- Turbidity
- Arsenic
- Bacteriological Contamination
- Total Coliform
- Faecal Coliform
METHODOLOGY OF TESTING
Parameters Methodology
CHEMICAL
pH pH Meter
IRON (As Fe) Spectrophotometry
Dissolved Solids TDS Meter
Total Hardness Titration Method
Mn Spectrophotometry
TOXIC MATERIALS
ARSENIC Spectrophotometry
BACTERIOLOGICAL
Total Coliform Multiple Tube Technique Method
Feacal Coliform Multiple Tube Technique Method
CHEMICAL
pH pH Meter
IRON (As Fe) Spectrophotometry
Dissolved Solids TDS Meter
Total Hardness Titration Method
Mn Spectrophotometry
TOXIC MATERIALS
ARSENIC Spectrophotometry
BACTERIOLOGICAL
Total Coliform Multiple Tube Technique Method
Feacal Coliform Multiple Tube Technique Method
INDIAN STANDARD SPECIFICATIONS FOR DRINKING WATER
IS: 10500
Sl.No. Parameter Requirement desirable Limit Remarks
1. Colour 5 May be extended up to 50 if toxic
substances are suspected
2. Turbidity 10 May be relaxed up to 25 in the
absence of alternate
3. pH 6.5 to 8.5 May be relaxed up to 9.2 in the absence
4. Total Hardness 300 May be extended up to 600
5. Calcium as Ca 75 May be extended up to 200
6. Magnesium as Mg 30 May be extended up to 100
7. Copper as Cu 0.05 May be relaxed up to 1.5
8. Iron 0.3 May be extended up to 1
9. Manganese 0.1 May be extended up to 0.5
10. Chlorides 250 May be extended up to 1000
11. Sulphates 150 May be extended up to 400
12. Nitrates 45 No relaxation
13. Fluoride 0.6 to 1.2 If the limit is below 0.6 water should
be rejected, Max. Limit is extended to 1.5
14. Phenols 0.001 May be relaxed up to 0.002
15. Mercury 0.001 No relaxation
16. Cadmium 0.01 No relaxation
17. Selenium 0.01 No relaxation
18. Arsenic 0.05 No relaxation
19. Cyanide 0.05 No relaxation
20. Lead 0.1 No relaxation
21. Zinc 5.0 May be extended up to 10.0
22. Anionic detergents (MBAS) 0.2 May be relaxed up to 1
23. Chromium as Cr+6 0.05 No relaxation
24. Poly nuclear aromatic
Hydrocarbons -- --
25. Mineral Oil 0.01 May be relaxed up to 0.03
26. Residual free Chlorine 0.2 Applicable only when water is chlorinated
27. Pesticides Absent --
28. Radio active -- --
IS: 10500
Sl.No. Parameter Requirement desirable Limit Remarks
1. Colour 5 May be extended up to 50 if toxic
substances are suspected
2. Turbidity 10 May be relaxed up to 25 in the
absence of alternate
3. pH 6.5 to 8.5 May be relaxed up to 9.2 in the absence
4. Total Hardness 300 May be extended up to 600
5. Calcium as Ca 75 May be extended up to 200
6. Magnesium as Mg 30 May be extended up to 100
7. Copper as Cu 0.05 May be relaxed up to 1.5
8. Iron 0.3 May be extended up to 1
9. Manganese 0.1 May be extended up to 0.5
10. Chlorides 250 May be extended up to 1000
11. Sulphates 150 May be extended up to 400
12. Nitrates 45 No relaxation
13. Fluoride 0.6 to 1.2 If the limit is below 0.6 water should
be rejected, Max. Limit is extended to 1.5
14. Phenols 0.001 May be relaxed up to 0.002
15. Mercury 0.001 No relaxation
16. Cadmium 0.01 No relaxation
17. Selenium 0.01 No relaxation
18. Arsenic 0.05 No relaxation
19. Cyanide 0.05 No relaxation
20. Lead 0.1 No relaxation
21. Zinc 5.0 May be extended up to 10.0
22. Anionic detergents (MBAS) 0.2 May be relaxed up to 1
23. Chromium as Cr+6 0.05 No relaxation
24. Poly nuclear aromatic
Hydrocarbons -- --
25. Mineral Oil 0.01 May be relaxed up to 0.03
26. Residual free Chlorine 0.2 Applicable only when water is chlorinated
27. Pesticides Absent --
28. Radio active -- --
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