145. Indication of excellent water quality is by
(a) water Hyacinth (b) Lotus flower
(c) Stone flies
(d) Sewage fungus
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Nelumbo nucifera shows high potential for usage in wastewater treatment removing polluting compounds and heavy metals. It is able to grow in variable water conditions and in low light intensity. Various studies show the successful use of N. nucifera to counteract water eutrophication.
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These are the key water-quality indicators:
Dissolved oxygen (DO) The DO test measures the amount of oxygen dissolved in the water. ...
Water temperature. Aquatic organisms are dependent on certain temperature ranges for optimal health. ...
pH. ...
Escherichia coli (E. ...
Specific conductance. ...
Nitrates. ...
Transparency. ...
Visual tests.
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