For a BTech program in Environmental Engineering the course fee will depend on the status of your college. If you study in a private college then its hoped that it will have a larger fee than that of government colleges. But if you ask me in general perspective the course fee may vary upto Rs. 7.5L with the lower limit of around Rs. 3.5L.

To know more about the BTech Environmental Engineering course you may visit the link provided below:

https://www.careers360.com/courses/b-tech-in-environmental-science-and-engineering

I hope my answer helps. All the very best for your future endeavors!