Apparently the City of New York is trying to persuade its people to give up bottled drinks and consume tap water instead to help protect the environment.
It has launched an advertising campaign to promote the cause, with local restaurants encouraged to join in.
City officials say their campaign will save people money, and reduce waste.
According to environmental groups, four out of five plastic water bottles end up on landfill sites and the production process contributes to global warming.
The distribution process sometimes involves shipping water halfway around the world.
Here in Spain most people only drink bottled water. Millions of bottles must be sold each week in shops and supermarkets throughout the country, particularly in Summer. Apart from the plastic waste there are the transport costs to consider.
Would it hurt to drink the tap water?