Water Security is National Security

Water resources and how they are managed impact almost all aspects of society and the economy, in particular health, food production and security, domestic water supply and sanitation, energy, industry, and the functioning of ecosystems. Under present climate variability, water stress is already high, particularly in many developing countries, and climate change adds even more urgency for action. Without improved water resources management, the progress towards poverty reduction targets, the Millennium Development Goals, and sustainable development in all its economic, social and environ- mental dimensions, will be jeopardized. UN Water.Org

Showing posts with label brazil. Show all posts
Showing posts with label brazil. Show all posts

Monday, March 9, 2015

Police will “guard” the water for those who can pay for it, while we die of thirst."

So says a protester walking though the streets of Sao Paul as water service is being drastically cut due to a relentless drought in Brazils most populous state. The 20 million people that live in Sao Paulo, Brazil have run out of water and things are starting to get ugly really fast.

Secretly recorded, Paulo Massato, the metropolitan director of the São Paulo state-run water utility, said that people might have to flee the city. "There's not enough water, there won't be water to bathe, to clean," says Massato. Fears of what comes next has begun and thousands took to the streets recently walking from the poor neighborhoods and marching past wealthy residential towers most of which have their own water tanks, to the Bandeirantes Palace in Morumbi, where the official residence of the governor (State of Sao Paolo Geraldo Alckmin) is located.

A demonstrator holds up a bucket with a sign reading "Water, Yes," in reference to water rationing in Sao Paulo January 29, 2015. Residents of Brazil's largest city, Sao Paulo, could soon only have running water two days a week. (REUTERS/Nacho Doce)

São Paulo, along with 93 smaller localities around Brazil, is facing drastic water shortages that could mean up to five days a week without running water starting in April. The mega-city’s largest reservoir, which supplies about 30 percent of the 20 million people living in the metropolitan region, is currently at only 5.1 percent of its capacity. It’s all the result of a severe drought that has extended throughout Brazil’s Southeastern region, and could soon lead to water rationing for as much as 40 percent of the population.

Aside from practical residential concerns, the shortage has affected industry and agriculture across the region, including the production of hydroelectricity, a key component of Brazil’s power grid. Even the carnaval is threatened—celebrations have been cancelled in some dry municipalities and the Río samba groups are altering their choreography to eliminate traditionally prominent water us.

The latest must-have item in the city is a rainwater cistern. A local group created in October, Cisterna Já, teaches city residents how to make their own mini-cisterns, allowing them to cut back on increasingly expensive and scarce public water supplies.

Consumption in the metropolitan region has already been reduced by a quarter, according to the president of Sabesp, the city’s water utility. Yet the main water loss culprit isn’t long showers, but rather leaky pipes. In order to address the problem, he explained in a recent op-ed, about 64,000 kilometers of buried pipes would have to be replaced.

Experts say they are concerned there is little practical preparation for upcoming shortages and argue that few relevant policy measures are being put into place.

The roots of the water shortage can be traced back to deforestation and industrialization across the region, according to Marcos Sorrentino, a professor of education and environmental policy at the University of São Paulo. A lack of political will to address the problem has led São Paulo to maintain a system of wasteful water distribution and consumption, and the city has missed opportunities to implement water saving and reuse technologies, Sorrentino says.

Residential water use only accounts for an estimated 6 percent of water usage in the region, which means that even if Paulistas stopped bathing altogether they won’t be able to resolve the “crisis de agua,” as it’s called locally. “Agriculture and industry, the biggest consumers, are only now being mobilized to commit to reducing consumption,” says Sorrentino.

A recent study found that 95 percent of businesses, industries, hospitals and hotels in the state of São Paulo don’t have a water supply contingency plan. “Lack of water will certainly compromise the operations of places that depend on the public water system,” says Rodnei Domingues, the study’s coordinator.

Sorrentino is particularly concerned about the drought’s impact on food prices, and notes that there have already been several water shortage-related protests. “The discontent of the population of the cities in which rationing has started is very large and it is not difficult to predict effects on public health and the expansion of urban violence,” he says.

The drought began last austral summer (December to February), when São Paulo state received about one-third to half of its usual amount of rain during what should have been its wettest season. In the seven months since, rainfall has been about 40 percent of normal. Across southeastern Brazil, production of key crops like coffee and sugar are in steep decline, and citizens are facing periodic outages in the water supply—even as news agencies report that local water authorities have not instituted conservation measures.

“The climate of the region is seasonal, with a rainy summer and a dry winter, and the drought has extended through the current dry season and the past rainy season,” noted Marcos Heil Costa, climate scientist at the Universidade Federal de Viçosa. “To make things worse, the onset of the rainy season—which usually happens in late September or early October—has not happened yet.”

“For the last rainy season, the pattern [of reduced rainfall] has been observed in the past, though the intensity was unprecedented this year,” Costa added. “For the dry season, coincidence or not, it looks exactly like what has been predicted by IPCC for a warmer climate. And it is now clear that our policies on management of water resources are unsustainable. No city in southeast Brazil seems prepared to handle a drought like this one. It is a mix of a lack of preparation for low levels of rain and a lack of environmental education in the population. Most people continue to use water as if we were in a normal year.” More

 

Saturday, January 24, 2015

Drought sees Rio's main hydro plant turned off

Rio de Janeiro (AFP) - A major Rio hydroelectric power plant was switched off after water levels slipped below an operational minimum following severe drought, Brazil's national grid told AFP on Thursday.

Water levels are also dwindling at three other plants that serve a region home to 16 million people, but an ONS spokesman denied there was any immediate threat to energy supplies.

"The hydroelectric plant was switched off Wednesday as there was no longer enough water to keep its turbines turning," the spokesman said of the shutdown at the largest of the four sites.

Rio is laboring under weeks of scant rainfall as stifling temperatures approach 40 degrees Celsius (104 Fahrenheit).

The plants receive their water from the Paraiba do Sul river, which flows through the states of Sao Paulo and Minas Gerais, as well as Rio.

Last month, the states' governors agreed to begin work on improving the infrastructure of the sites as the drought shows little sign of abating.

Last year, Sao Paulo, Brazil's most populous state, suffered its worst drought in 80 years. More

 

Monday, December 1, 2014

Drought-hit Sao Paulo may 'get water from mud'

RIO DE JANEIRO (Thomson Reuters Foundation) - São 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.

The city began using its second so-called "technical reserve" 10 days ago to prevent a water crisis after reservoirs reached critically low levels last month.

This is the first time the state has resorted to using the reserves, experts say.

"If we take into account the same pattern of water extraction and rainfall that we've seen so far this month - and it's been raining less than half of the average - we can say the (reserve) will last up to 60 days," said Marussia Whately, a water resources specialist at environmental NGO Instituto Socioambiental.

But an expected increase in water usage during the upcoming Christmas and New Year's holidays could easily reduce the time the reserve will last, she added.

After that period, there is no certainty over the water supply available to Brazil's wealthiest city and financial center, Whately said.

If rain doesn't replenish the Cantareira system - the main group of reservoirs that supply São Paulo - the city could run dry, she said.

FINAL RESERVE

A third and final technical reserve might be used, but it is difficult to access and mixed with silt that could make pumping it to users difficult, according to Vicente Andreu, the president of the water regulatory agency ANA.

"I believe that, technically, it would be unviable. But if it doesn't rain, we won't have an alternative but to get water from the mud," Andreu said at a hearing about the water crisis in Brasilia's Lower House of Congress on Nov. 13.

Brazil's southeast region is suffering its worst drought in at least 80 years after an unusually dry year left rivers and reservoirs at critically low levels.

Antonio Nobre, a leading climate scientist at INPE, Brazil's National Space Research Institute, has linked Brazil's worsening drought to global warming and deforestation in the Amazon. Both are drastically reducing the release of billions of liters of water by rainforest trees, which reduces rainfall further south, he said.

PLANNING AND POLITICAL FAILURES

Poor planning and a lack of investment to boost reservoir capacity also have left São Paulo teetering on the brink of disaster, experts say.

A presidential election in October, which pitted the governing Workers Party (PT) against the opposition Social Democracy Party (PSDB), led São Paulo Governor Geraldo Alckmin of the PSDB to delay taking action on the water shortage - such as ordering mandatory rationing - for fear of losing votes during his reelection campaign, experts say.

Now some fear changes are coming too late for São Paulo. Alckmin has pledged to invest 3.5 billion reais ($1.4 billion) to build new reservoirs and improve distribution - but most of the work won't be completed for at least a year.

Brazil's government has treated the crisis as a temporary problem that would likely go away with the first heavy rains of the summer, rather than a sign of potentially longer-term problems with water security, Andreu said.

He has criticized the government's response to the crisis and its inaction when scientists last year started to warn about a potentially devastating drought in 2014.

Now politicians admit there is a crisis, and they are finally taking action.

The states of São Paulo, Rio de Janeiro and Minas Gerais, where more than half of Brazil's GDP is produced, on Nov. 27 agreed on works to divert water from the main river that supplies Rio de Janeiro to reservoirs in São Paulo.

Civil society organisations are pressing the government to take more radical action, such as mandatory rationing.

LOOKING TO 2015

The Alliance for Water, a growing group of NGOs that includes Greenpeace, The Nature Conservancy and WWF, is demanding a plan to prepare for next year's dry season, which starts in April.

"We are starting 2015 with a serious deficit that won't be resolved this summer, so we must start thinking about what to do in April, when the dry season begins and we won't have any more technical reserves to use," said Whately, who is coordinating the Alliance for Water.

Sabesp, the water utility that serves São Paulo, accessed a first emergency water reserve in May totaling 480 billion liters.

That reserve started to run out in the second half of October, and reservoirs reached just 3 percent of their capacity on Oct. 21.

State-owned Sabesp was then allowed to tap a second emergency reserve, of 106 billion liters, lifting reservoir capacity above 10 percent.

But now, just weeks after this second emergency supply started to be used, water levels at the Cantareira reservoirs are once again below 10 percent, according to the company.

The third reserve, with 200 billion liters of water, is the deepest, and is located in smaller reservoirs and in passageways that connect reservoirs, which are harder to tap. Unlike the water in the reservoirs, which are drawn by gravity, the reserves water must be pumped out, according to ANA's Andreu. (Reporting by Adriana Brasileiro, editing by Laurie Goering) More