Straits Times: Pham Thi Ly buys fresh water every 10 days from a well operator in another commune during the dry season. To ensure her children have clean drinking water, she has to buy the bottled stuff. The dry season typically runs for four months and this buying of water puts a dent into whatever she earns from fishing. But Mrs Ly has no choice - there is no fresh water to be had as the groundwater under the Thua Duc Commune in Vietnam's southern Ben Tre province has become too salty for daily use. Mr Tran...