Environmental Engineering Science is crossing one frontier over another. Man's vision is wide, far-reaching and proven over the decades and centuries. Man's scientific endeavour is surpassed by one barrier over another. Zero discharge norms is the vision of tomorrow in environmental engineering perspective. An environmental engineering scientific Endeavour needs to be validated in the pursual of future vision of membrane science. The vision needs to be of sound technical knowledge and prowess. In the pursuit of knowledge and innovation, the world of challenges beckons in the horizon of barriers time and again. Here comes the necessity of a sound environmental engineering perspective. The vision is wide and clear- membrane science is today's environmental engineering technique. Membrane science is surpassing one frontier over another. In today's age, man's as well as scientist's target should be towards environmental and energy sustainability. Provision of pure drinking water to the common mass has an umbilical cord with environmental sustainability. A scientist's vision will be validated only when scientific endeavour reaches the rural and urban milieu. In this paper, the author delineates the importance of membrane science and the immense application of reverse osmosis in the provision of clean drinking water and desalination.

Man's vision is unsurpassed, groundbreaking and inspiring. The caution and the order of the present-day civilization with respect to environmental engineering perspective is to target zero-discharge norms. Introspection, vision and hope will surely lead mankind to its achievable goals. Today's world has crucial and critical perspectives. Provision of drinking water will surely be a boon to the endless scientific endeavors in membrane science and technology. Desalination of sea water and removal of metals from groundwater will be the target and vision of tomorrow's engineering Endeavour.