Take a look at Mr Pattnaik's stunning sand sculptures
His students joined in his appeal to not waste water as well, creating more sand art in Odisha's popular Puri Beach
India has the most number of people – a whopping 63 million – living in rural areas without access to clean water, according to a new report. That is almost as much as the entire population of the United Kingdom.
There are several small ways you can reduce the amount of water you waste. For instance, turn off the taps when you are brushing your teeth, shaving or even washing dishes. Avoid putting oils, food waste and chemicals down the drain because the more you put down, the more it costs to treat.
The United Nations General Assembly officially designated 22 March as World Water Day in 1993.