Environmental Engineer
An environmental engineer designs systems that clean water, control air pollution and manage waste; in India most usually enter through a B.Tech after Class 12 with PCM.

1 career in Water Treatment & Desalination Tech, each with what the job involves, eligibility, courses, entrance exams, top colleges, salary and future scope in India.
Reverse osmosis engineering, smart water meters, industrial wastewater recycling, and aquifer recharge.