Q: Elaborate section 20 of water act, 1974 ?

Ans: According to Section 20 of the water Act, 1974, the state board also has the power to inspect any land, conduct surveys or gauge in an area if it thinks fit for controlling or preventing water pollution. 

The state pollution control board is an statutory organization established under the water( Prevention and Control of Pollution) act, 1974 which works under the supervision of the Central Pollution Control Board to implement the environmental laws and rules within the respective state for the protection of the environment. The state pollution control board has the power to inspect any land , conduct suryeys or guage in an area if it thinks fit for controlling or preventing water pollution. 

The state pollution control board can also ask any company, industry to dispose of the information pertaining to the construction, installation, and operation of its establishment.