Definitely it has an immense potential and scope which is increasing year by year. It is a diverse field and requires individuals from diverse backgrounds like chemical,process,civil,thermal, environmental chemistry,water and sewage treatment,waste management.

Job prospects for professionals with qualification in environmental engineering are bright in research centres, NGOs and various governmental departments working towards green development. Candidates with M.Tech in environmental engineering have opportunities to work for government built assessment committees which study and analyse the environmental risks involved in certain projects. The report of such a committee is then submitted to the concerned authority for further observation. Scholars with PhD in environmental engineering can opt for teaching jobs in colleges and universities.

Don't think much about its scope , if you are interested just put your full effort and you can definitely reach heights.

All the best.!