A river can be seen flowing through drought-affected farming areas in the western region of New South Wales March 19, 2015. According to the Australian Bureau of Meteorology, Australia recorded its second-hottest February since records began in 1910, with national maximum temperatures at 2.35 degrees above the average. REUTERS/David Gray

A helicopter drops water on a bushfire burning above Cape Town's Tokai forest, March 2, 2015. Firefighters are attempting to put out a series of fires fanned by hot conditions and strong winds across the Cape Peninsula. REUTERS/Mike Hutchings (SOUTH AFRICA - Tags: DISASTER ENVIRONMENT TPX IMAGES OF THE DAY) 

Empty water buckets are seen outside homes as residents wait for water to be distributed in the neighborhood of Residencial los Jardines in Panama City March 20, 2015. Residents say that there has been no running water to their homes since January 2015 and that they have relied on water tank trucks that distribute water to their neighbourhood. World Water Day is marked on March 22. Picture taken March 20, 2015. REUTERS/Carlos Jasso

A woman pushes her cart, as she collects potable water from a public well on the outskirts of Managua March 20, 2015. The World Water Day falls on March 22. REUTERS/Oswaldo Rivas

Children hold a container as water is distributed in the neighborhood of Residencial los Jardines in Panama City March 20, 2015. Residents say that there has been no running water to their homes since January 2015 and that they have relied on water tank trucks that distribute water to their neighbourhood. World Water Day is marked on March 22. Picture taken March 20, 2015. REUTERS/Carlos Jasso 

A man stands in an empty public swimming pool in Burbank, Los Angeles, California March 19, 2015. California Governor Jerry Brown and top lawmakers on Thursday announced a $1 billion emergency legislative package to deal with the state's devastating multi-year drought. The state is entering the fourth year of record-breaking drought that has prompted officials to sharply reduce water supplies to farmers and impose strict conservation measures statewide. REUTERS/Lucy Nicholson 

Dead fish are pictured on the banks of the Guanabara Bay in Rio de Janeiro February 24, 2015. International Olympic Committee members meeting in Rio de Janeiro this week will understand if its waters are not completely clean for the sailing events in 2016, the state's governor said on Monday. REUTERS/Ricardo Moraes (BRAZIL - Tags: SPORT OLYMPICS ENVIRONMENT) 

Cerebrovascular accident (CVA) patient Pedro, sits on his bed before being washed with the help of his daughter Daniela (L), 38, and wife Maria Do Carmo, 70, inside their house in Brasilandia slum, of which they are without water for 13 hours a day, in Sao Paulo February 11, 2015. Brazilians are hoarding water in their apartments, drilling homemade wells and taking other emergency measures to prepare for forced rationing that appears likely and could leave taps dry for up to five days a week because of a drought.. In Sao Paulo, the country's largest city with a metropolitan area of 20 million people, the main reservoir is at just 6 percent of capacity with the peak of the rainy season now past. Many neighborhoods have already experienced daily water outages as Sabesp turns down pressure in pipes to save consumption. Some residents of the Brasilandia slum said this week they were often without water 13 hours a day. REUTERS/Nacho Doce (BRAZIL - Tags: HEALTH ENVIRONMENT SOCIETY DISASTER) 

Houses are seen by a landslide in the Jaguari reservoir, next to the re-emerging old city of Igarata, Sao Paulo State, February 4, 2015. The ruins of a sunken town which had remained underwater since 1969 have re-emerged, as parts of Brazil grapple with the country's worst drought in 80 years. The Jaguari reservoir in Sao Paulo is 30 metres below its normal level, revealing the old structures of the former town of Igarata, including the church, its main street, a square, parts of old benches and a cross. The town was submerged in 1969, the period in which plants began to be constructed to generate energy for the Vale do Paraiba region and the Cantareira reservoir, which recently fell to seven percent of its capacity, passing the "dead-level" in which the water must be pumped. Picture taken February 4 , 2015. REUTERS/Nacho Doce (BRAZIL - Tags: SOCIETY ENVIRONMENT DISASTER) 

Pontoons, which were previously used as a floating jetty, are seen on the cracked ground of the Atibainha dam, part of the Cantareira reservoir, during a drought in Nazare Paulista, Sao Paulo state February 12, 2015. Brazil's worst drought in 80 years has left the Cantareira system, that provides greater Sao Paulo with most of its water, with the lowest water level on record. Brazil's economy is already expected to post zero growth this year. Worse yet, since Brazil depends on hydroelectric dams for about three quarters of its electricity, power shortages are also possible due to the drought, federal officials have said. REUTERS/Paulo Whitaker (BRAZIL - Tags: ENVIRONMENT DISASTER TPX IMAGES OF THE DAY) 

A cow, dead during the drought, is pictured at a farm in Campo dos Goytacazes January 31, 2015. A severe drought is accelerating Brazil's expected descent into recession, adding to President Dilma Rousseff's woes as she takes unpopular austerity measures and faces economic fallout from a corruption scandal at state-run oil company Petrobras. Sao Paulo, Brazil's largest city, has nearly run out of water and the whole country faces power rationing as the worst drought in more than 80 years dries up hydroelectric reservoirs. The water and energy shortages are hitting just as the government moves to cut spending and raise taxes to restore business confidence shaken by her interventionist policies and revelations of a massive kickback scheme at Petrobras. Picture taken on January 31, 2015. REUTERS/Ricardo Moraes (BRAZIL - Tags: SOCIETY POLITICS ENVIRONMENT CRIME LAW) 

A child takes a bath with buckets of water at her home in the Rocinha slum in Rio de Janeiro, March 19, 2015. The International Water Day is held on March 22. REUTERS/Pilar Olivares 

An aerial view of the Atibainha dam, part of the Cantareira reservoir, during a drought in Nazare Paulista, Sao Paulo state November 18, 2014. Brazil's worst drought in 80 years has left the Cantareira system, that provides greater Sao Paulo with most of its water, with the lowest water level on record, with daily rationing becoming common in the region's smaller cities, according to the state authorities and the two main reservoirs serving metropolitan Sao Paulo, South America's largest city, could dry out by February if relief does not arrive in the upcoming rainy season. REUTERS/Nacho Doce (BRAZIL - Tags: DISASTER ENVIRONMENT TPX IMAGES OF THE DAY) 

A woman pushes her cart, as she collects potable water from a public well on the outskirts of Managua March 20, 2015. The World Water Day falls on March 22. REUTERS/Oswaldo Rivas 

Water storage tanks are pictured on a roof at the Rocinha slum in Rio de Janeiro, March 19, 2015. The International Water Day is held on March 22. REUTERS/Pilar Olivares 

Villagers collect water on a donkey cart from a communal tap in Rapotokwane village in Limpopo, March 21, 2015. The World Water Day falls on March 22. REUTERS/Siphiwe Sibeko 

Trash floats on top of the polluted water of Billings reservoir in Sao Paulo February 12, 2015. According to local media, the Billings dam supplies 1.6 million people in the Greater ABC region of Greater Sao Paulo and the state government wants to treat the water to be adequate for human consumption, adding to the complexity of securing safe water supply during the drought. Brazil is facing its worst drought in 80 years and its economy is already expected to post zero growth this year. Worse yet, since Brazil depends on hydroelectric dams for about three quarters of its electricity, power shortages are also possible due to the drought, federal officials have said. REUTERS/Paulo Whitaker (BRAZIL - Tags: ENVIRONMENT DISASTER SOCIETY) 

A horse grazes next to the cracked ground of the Atibainha dam as it dries up due to a prolonged drought in Nazare Paulista, Sao Paulo state, October 17, 2014. After a grueling election campaign in which officials faced fierce criticism for downplaying the effects of a year-long drought, Brazil's most populous state is finally coming to terms with an uncomfortable reality: it is running out of water. Sao Paulo state accounts for a third of Brazil's economy and 40 percent of its industrial production, and the water crisis is already crimping factory and farm output as well as the service sector in a stagnant economy. Hit by Brazil's worst drought in 80 years, the two main reservoirs serving metropolitan Sao Paulo, South America's largest city, could dry out by February if relief does not arrive in the upcoming rainy season. Picture taken October 17, 2014. REUTERS/Nacho Doce (BRAZIL - Tags: DISASTER ENVIRONMENT CIVIL UNREST ANIMALS BUSINESS) 

A man sells water using a tank on a cart made from an oil barrel in Dala outside Yangon February 10, 2015. Saudi Arabia's oil exports have risen in February in response to stronger demand from customers. As OPEC's top producer battles for market share Reuters photographers around the globe have been photographing oil barrels to document how they are utilised once the fuel has been used. REUTERS/Soe Zeya Tun (MYANMAR - Tags: BUSINESS SOCIETY ENERGY)

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Containers used to collect water are seen at Pamplona Alta shanty town in San Juan de Miraflores district of Lima, March 10, 2015. Rapid growth in Latin America over the past decade still left one in five residents of the region living on less than $4 (2.5 pounds) a day, the World Bank said in a report on Monday. REUTERS/Mariana Bazo (PERU - Tags: SOCIETY POVERTY BUSINESS) 

Ana Paula, 44, washes the feet of her mother Lucia, 70, who is suffering from bullous erysipelas disease, using water collected from outside their home due to water rationing in Itu, in Sao Paulo state that depends on the drought-hit Cantareira water system, October 29, 2014. The worst drought in 80 years has left the Cantareira system, that provides greater Sao Paulo with most of its water, with the lowest water level on record, with daily rationing becoming common in the region's smaller cities, according to the state authorities. Taps in homes have not provided running water since water rationing in Itu began eight months ago. REUTERS/Nacho Doce (BRAZIL - Tags: DISASTER ENVIRONMENT) 

A woman washes in a stream due to a water shortage in Panama City March 20, 2015. World Water Day is marked on March 22. Picture taken March 20, 2015. REUTERS/Carlos Jasso

Paolo Grana collects water from a container at the Pamplona Alta shanty town, in San Juan de Miraflores district of Lima, March 10, 2015. Rapid growth in Latin America over the past decade still left one in five residents of the region living on less than $4 (2.5 pounds) a day, the World Bank said in a report on Monday. REUTERS/Mariana Bazo (PERU - Tags: SOCIETY POVERTY BUSINESS) 

A drought-related cactus installation called "Desert of Cantareira" by Brazilian artist and activist Mundano is seen at Atibainha dam, part of the Cantareira reservoir, during a drought in Nazare Paulista, Sao Paulo December 2, 2014. Sao Paulo, Brazil's drought-hit megacity of 20 million, has about two months of guaranteed water supply remaining as it taps into the second of three emergency reserves, officials say. REUTERS/Nacho Doce (BRAZIL - Tags: DISASTER ENVIRONMENT SOCIETY TPX IMAGES OF THE DAY)