Bangalore: A sincere entrepreneur who wants to inflict some change into the world always looks out for opportunity to do some social work. Some entrepreneurs do it the other better way. They start doing some social good, give services free of cost and build a full fledged enterprise out of it.

Environmentalists and social entrepreneurs around the world have always been concerned about the growing shadows of issues and problem over the world. Forbes has listed six companies run by 9 entrepreneurs who have founded their careers right upon the beam of social service.

Here are the companies and their leaders who are working towards the greater good.

1. Alex Mittal

Company: Innova Dynamics

On a field trip to Honduras in 2005, Alex realized the importance of access to water and most importantly drinking water in the developing countries. Soon after returning to University of Pennsylvania, Alex and his friends started developing the first ever plastic pipe that would remove bacteria and other microbes from the flowing water. Originally known as Innova materials, the team renovated the company to develop technology to help the US Military.