Question

The states in India to introduce compulsory roof rainwater harvesting act is _______
A. Andhra Pradesh
B. Karnataka
C. Tamil Nadu
D. Kerala

Answer 1

Hint: The state which did make the act compulsory is also the state which has Chola temples and shares a maritime border with Sri Lanka. It is also the southernmost state of India.

Complete answer: Tamil Nadu was the first state to make rainwater harvesting compulsory and it was made compulsory for every building so that groundwater depletion could be avoided.
The project has been implemented in all rural areas of Tamil Nadu and was launched in the year 2001. It had a tremendous impact on recharging the groundwater level all across Tamil Nadu. Late Chief Minister J Jayalalitha, in 2003, set a landmark ordinance on Rainwater Harvesting in Tamil Nadu. Rainwater harvesting can be described as simple collection or storing of water. It is done through scientific techniques from the areas where the rain falls. It involves utilization of rainwater for domestic or agricultural purposes. The method of rainwater harvesting has been in practice since ancient times.
The peak demand during the summer months is reduced if rainwater harvesting is done properly. Rainwater harvesting helps in saving treated water for more important and appropriate water uses. Rainwater is a perfect primary water source for many uses but it also is a great backup water supply for emergency situations like droughts.

Therefore the correct answer is option C.

Note: There are basically two methods of rainwater harvesting, these are - surface runoff harvesting and rooftop rainwater harvesting. Surface Runoff Harvesting - This is done in the urban areas where rainwater flows away as surface runoff. Rooftop Rainwater Harvesting - In this system the rainwater is caught where it falls.