भौमजल स्तर के नीचे कठोर चट्टानों की परतों के बीच जमा भूजल को किस रूप में जाना जाता है?

Which is the first State in India where rooftop rainwater harvesting structure was made compulsory for all houses across the State?

Fill in the blanks: Tamil Nadu is the first state in India which ________ rooftop rainwater harvesting structures compulsory for all houses ________ the state.