Cape Town's drought measures have temporarily saved the city from its so-called "Day Zero" - the day when taps are expected to run dry.
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Opposition Democratic Alliance leader Mmusi Maimane praised residents of Cape Town for slashing their water consumption.
"If we keep consumption this low for the weeks and months to come, we will defeat "Day Zero" in 2018," Mr Maimane, whose party runs the Cape Town municipality, said.
The Democratic Alliance party also tweeted the city had saved 529 million litres of water a day for the past week.