Clean water reservoir level

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Pritha

In 2001, NEERI collected water samples from 25 Clean Water Reservoirs of the city.

Samples were collected for few days in three seasons ( summer, winter, monsoon).

Testing of physio- chemical parameters as mentioned in BIS:10500 were carried out.

No bacteriological parameter was tested at CWR level.

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The samples were found to have high concentration of TDS, hardness, alkalinity, Ca and Mg.

In the subsequent slides graphs of the average levels of the above mentioned parameters are shown.

The red line indicates the maximum limit of the parameters as given in BIS:10500 drinking water standards.

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Fig-1: TDS level in water samples during summer.

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Fig-2: TDS level in water samples during monsoon.

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Fig-3: TDS level in water samples during winter.

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-Summer

Fig-4: Hardness level in water samples during summer.

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Fig-5: Hardness level in water samples during monsoon.

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Fig-6: Hardness level in water samples during winter.

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Fig-7: Alkalinity level in water samples during summer.

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Fig-8: Alkalinity level in water samples during monsoon.

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Fig-9: Alkalinity level in water samples during winter.

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Fig-10: Calcium level in water samples during summer.

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Fig-11: Calcium level in water samples during monsoon.

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Fig-12: Calcium level in water samples during winter.

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Fig-13: Magnesium level in water samples during summer.

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Fig-14: Magnesium level in water samples during monsoon.

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Fig-15: Magnesium level in water samples during winter.

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