There is an acute shortage of water in the country. A good portion of water usage can be saved if water tap is controlled at different level of output. Normally full tap is kept on while washing hands or face etc. People do not have tendency to keep tap on at lower levels of water output since there is no regulator at different levels. Therefore, if there is a regulator like a fan regulator speeds to have different output water levels. People shall use it effectively and save precious water. This way might be say up to 30% water saving is possible. I wish some manufacturing company of water taps to start producing such water taps like fan regulators. Also in many hotels, film halls, restaurants etc taps are used which automatically starts when palms are put under it and also stops automatically after few seconds -there is no need to close it. But in such taps there some wastage of water. And sometime to wash the face etc it is inconvenient to use as than one require more inflow of water than one time automatic flow of water. This must be modified suitably. Mahesh Kapasi, New Delhi