Cape Town mayor Patricia de Lille will reveal the revised estimate for “day zero” — the day the taps will run dry — on Tuesday.

Dam levels in the Western Cape as a whole fell to 29.7% this week‚ and De Lille is expected to reveal that daily water consumption in the City of Cape Town fell to 578 million litres in the past three weeks.

This is the lowest yet‚ but still will above the 500 million-litre target set by the council and the Department of Water and Sanitation.

On December 18 — the last time the city council water dashboard was updated — day zero was out at April 29. It is expected to have moved forward to around April 22.

De Lille will also give a progress report on four desalination plants‚ two groundwater abstraction projects and a water recycling project.