The Mail & Gaurdian has reported that
In the United States, public pressure has been growing to force powerful corporations to disclose where their bottled water comes from, after research indicated that up to 40% of bottled water used tap water as its source.
While in some countries (I saw it in Senegal some years ago) the processing and bottling of unsafe tap water can can guarantee its safety, this is surely not the case in most of the USA and South Africa.
Besides the cost to the consumer bottled water has a large cost to the environment.
Making bottles to meet Americans’ demand for bottled water requires more than 17-million barrels of oil a year — enough fuel for more than a million US cars for a year — and generates more than 2,5-million tonnes of carbon dioxide.