Water Quality and Designated Best Use (DBU) …
49
5 Conclusion
The values of total coliform, DO, pH, BOD, EC, NH 3 , SAR, and boron were determined, and the values clearly show that in the category A (potable source with
chlorination but without conventional treatment) the value of DO was much less
than limits, and therefore, the water cannot be used under the category A.
The value of parameters for category B (outdoor bathing) showed that the value
of DO was much less than the prescribed limit so the water cannot be used under
this category.
The value of parameters for C class (potable water source with treatment) was
within limits, and therefore, the water can be used under this category.
The value of parameters for category D (propagation of wildlife and fisheries)
was within limits, and therefore, water can be used under this category.
The value of parameters for category E (irrigation, industrial cooling, and
controlled disposal) is within limits, and therefore, the water can be used under this
category. Therefore, it can be concluded that the water is fit to be used for following
categories.
Class C (Potable source of water with treatment).
Class D (fisheries development and wildlife propagation).
Class E (irrigation, industrial cooling, and controlled disposal).
Acknowledgements I would like to thank the local people of the lake site for extending a helping
hand for sample collection and for providing useful information about the site. I would also like to
thank the Laboratory of Central Pollution Control Board (CPCB) at Parwanoo, Himachal Pradesh
for providing facilities for sample testing.
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