Not Perfect Crap Beck but simple conservation of supply. Don't know how it works in the South but I get supply for 12 sometimes 8 hours every 3 days. Have 2 x 2 ton tanks = 4,000 lts or 4 m2 of water and can manage with no problem. I can run the tanks dry and use what I want when the mains supply is on but after the supply of 1st 10 tones in the month it doubles each time you use further 10 tons. If I needed more than 4 tons storage I would buy more.
Charge the ones that use it to conserve supplies. Don't blame the Government because you don't have a limited supply - the population has to take action.