- Cape Town (South Africa) recently averted a clean water shortage thanks to residents (4 million) slashing consumption.
- Water consumption has declined from 1.2 billion/liters per day (2015) to 509 million.
- However, more drastic measures are needed if drought continues.
- Options include more reductions (higher prices, restrictions), larger desalination plants (+150 million liters/day) and recycling sewage water (+90 million liters).
- Additional solutions are drilling more ground water holes (+150 million liters) and towing icebergs from Antarctica (+150 million liters, half cost desalination, unlikely because of uncertainty).
