The reservoir that provides around 70% of water in Colombia's capital is at less than 17% capacity
About ten million residents of the Colombian capital Bogota are being forced to ration water amid crippling shortages due to a severe drought.
Officials have split the region around the capital into nine zones - each zone taking turns to switch off water services for 24 hours.
Authorities will reassess the situation every two weeks under the rationing plan.
"Let's not waste a drop of water in Bogota at this time," Mayor Carlos Fernando Galán said in a press conference to announce the measure.
The Chuza reservoir, part of the system which provides around 70% of the city's water, is at less than 17% capacity.
Colombian President Gustavo Petro took to Twitter/X on Thursday to say he had ordered "a substantial change" to protect water resources over the next 30 years.
Residents are cutting down on their water usage.
Mexico City and Uruguay's capital Montevideo have also faced water shortages in recent years.
Climate change has also been deemed a major driver of drought, as well as rapid urbanisation and poor infrastructure.
Not all droughts are due to climate change but excess heat in the atmosphere is drawing more moisture out of the earth and making droughts worse.