Complex sentence: He travels to villages across Indian states like Rajasthan, Maharashtra, Uttar Pradesh and Madhya Pradesh, advocating water harvesting, and has been advocating conservation of traditional water structure in India as well as abroad.
Split into simpler sentences: He travels to villages across several Indian states, especially Rajasthan, Madhya Pradesh, Maharashtra, and Uttar Pradesh, describing the value of time-tested systems of water harvesting. He advocates conservation of traditional water structures in India as well as abroad.