Pay package after my graduation in Environmental engineering

What can I expect in terms of the pay package after my graduation in Environmental engineering?

Environmental engineering is a very diverse field but it pays you good when it comes to employment. There are many job opportunities for environmental engineers and it is growing day by day. Central and state pollution boards require more and more people to work towards maintaining clean and pollution free environment. They are looking forward to sustainable growth of the environment by finding out the solutions of the existing problem. The engineers in state pollution control board get the salaries ranging from Rs. 20,000/- to Rs. 35,000/- per month.
Engineers who have done higher education like M.Tech are earning the salaries ranging from Rs. 40,000/- to Rs. 60,000/- per month. There are many in the research field also who finds out the environmental problems and try to find out the solutions for the same they have the pay package ranging from Rs. 50,000/- to Rs. 80,000/- per month.