Perth, the bone-dry capital of Western Australia, has dealt with many of the same serious water issues now facing California by enacting reforms to its water-management system. California politicians are fascinated with Australia's introduction of graywater systems that reuse water from showers and washing machines to irrigate gardens, a ban on lawn sprinklers, a program to purchase water for the environment — in lieu of curbing farmers’ water rights — paired with a $4.5 billion investment in water-saving infrastructure.