The high amount of $E. coli$ in water is the indicator of

  • A
    Hardness of water
  • B
    Industrial pollution
  • C
    Sewage pollution
  • D
    Presence of chlorine in water

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Similar Questions

When does the $BOD$ level in effluent decrease?

$X$ - There are two phases in sewage treatment plant.
$Y$ - Microbes are involved in this process.

$A$: More sewage treatment plants are required in proportion to the human population.
$R$: Biogas,which is a fuel energy,is produced in $STPs$.

Select the correct statement from the following.

Sewage water can be purified for recycling with the action of

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