You can check the colleges given below Government Indian Institute of Technology Madras Indian Institute of Technology Bombay Indian Institute of Technology Kharagpur Indian Institute of Technology, Kanpur National Institute of Technology Tiruchirappalli Delhi Technological University, Delhi National Institute of Technology Warangal College of Engineering, Pune Private VIT University, Vellore SRM University, Chennai To check the complete list you can refer below link https://engineering.careers360.com/colleges/list-of-be-btech-in-environmental-engineering-colleges-in-india Good luck!!

IIT Delhi,IIT Kanpur, IIT madras, IIT kharagapur