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### Helping others: Water from Air: (page created June 2007 - last updated November 2007)


## Why we need water?: from Aqua Sciences, Inc. http://aquasciences.com/

The Importance Of Water
You should have at least a three-day supply of water and you should store at least one gallon of water per person per day. A normally active person needs at least one-half gallon of water daily just for drinking.

Additionally, in determining adequate quantities, take the following into account:

- Individual needs vary, dpeending on age, physical condition, activity, diet and climate
- Children, nursing mothers and ill people need more water.
- Very hot temperatures can double the amount of water needed.
- A medical emergency might require additional water.

Source: FEMA, http://www.fema.gov/plan/prepare/water.shtm>

- According to the United Nations, between 5 and 9 million people per year die as a result of lack of access to safe drinking water.

- Looking back at the 2004 Tsunami disaster, the greatest and most immediate need was safe drinking water.

- Military personnel in the field require a continuous, uninterruptible supply of fresh, clean, drinkable water.

- Approximately 30% of the sustainment requirement to support U.S. efforts in Iraq are for water.

- Producing water at the point of consumption reduces transportation costs and elminates water hauler exposure to ambush and IEDs.

# "OFF THE GRID" WATER^™

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John Tompkins, left, and David Richards of AquaMagic show off the company’s HP120-DRU on Thursday in Henderson. The machine is powered by a diesel generator that can produce up to 120 gallons of drinking water per day by converting air into water.

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(to link the article above use: #WAE1)

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## Dew Collector Studied in Ajaccio, University of Corse, France, and in Croatia, by NGO OPUR, http://www.opur.u-bordeaux.fr

Full pictures and articles in French http://quanthomme.free.fr/qhsuite/page6brunoeau.htm

(to link the article above use: #WADC1)

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## Making Water From Thin Air, from American Technion Society, Fri 01-Jun-2007 http://www.newswise.com/articles/view/530525

Contact Information Available for logged-in reporters only

Description Two Israeli architects have devised a low-tech way to turn dew into fresh, usable water. Inspired by the dew-collecting properties of leaves, the invention can extract a minimum of 48 liters of fresh water from the air each day. Depending on the number of collectors used, an unlimited daily supply of water could be produced even in remote and polluted places.

Newswise — An architect pursuing a PhD at the Technion-Israel Institute of Technology and his colleague have devised a low-tech way to collect dew from the air and turn it into fresh water. Their invention recently won an international competition seeking to make clean, safe water available to millions around the world.

The brainchild of Technion Architecture and Building Planning grad student Joseph Cory and his colleague Eyal Malka, “WatAir,” is an inverted pyramid array of panels that collects dew from the air and turns it into fresh water in almost any climate.

Inspired by the dew-collecting properties of leaves, one 315 sq ft unit can extract a minimum of 48 liters of fresh water from the air each day. Depending on the number of collectors used, an unlimited daily supply of water could be produced even in remote and polluted places.

According to Cory, WatAir can be easily incorporated into both rural and urban landscapes because it has a relatively small base. Its vertical and diagonal design utilizes gravity to increase the collection areas. The panels are flexible and easy to collapse when not in use, and provide shelter from rain and heat and play areas for children.

“WatAir is a wonderfully simple concept which draws its inspiration from nature,” said competition judge Jo da Silva. “This is a simple and effective idea using tried and tested technology.”

The project was selected from 100 entries from North America, Europe, Africa and Asia as the winner of the “drawing water challenge” sponsored by Arup – a global firm of designers, engineers, planners and business consultants specializing in innovative and sustainable design.

Geotectura and Malka Architects, the respective architectural studios of Cory and Malka, are located in Haifa, Israel.

The Technion-Israel Institute of Technology is Israel's leading science and technology university. Home to the country’s winners of the Nobel Prize in science, it commands a worldwide reputation for its pioneering work in nanotechnology, computer science, biotechnology, water-resource management, materials engineering, aerospace and medicine. The majority of the founders and managers of Israel's high-tech companies are alumni. Based in New York City, the American Technion Society is the leading American organization supporting higher education in Israel, with 17 offices around the country.

(to link the article above use: #WAIS)

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## Those with the lowest incomes generally pay the most for their water, Richard Karn/Emerging Trends Report, March 29th, 2006 ; EMAIL: rkarn@emergingtrendsreport.com http://www.321energy.com/editorials/karn/karn032706.html

DETAIL 1: One of the crueler ironies… is that those with the lowest incomes generally pay the most for their water.

The Emerging Trends Report subscribes to the notion that in order for investors to capitalize on the solutions to fresh water problems in years ahead they must avail themselves of at least a rudimentary grasp of the scope of the issues involved. Considering that to a certain extent this even involves Chaos Theory of all things, we’ve decided there are only two approaches in presenting our micro to macro assessment of the systems involved: stream of consciousness verbosity or ‘the-knee-bone’s-connected-to-the-shin-bone’ simplicity. We’ve opted for the latter.

Water is unique amongst resources in that its availability and manipulation is pivotal in the rise and fall of civilizations. Today, Water is one of the three largest industries in the world, the other two being Oil & Gas and Electricity; moving water accounts for approximately 7% of worldwide commercial energy use while falling water driving turbines produces nearly 20% of the world’s electricity. By and large, the water supply business is heavily regulated but suffers few of the downsides of traditional industry: new products will not come on the market to compete with or replace it; business cycles do not have an effect on its price; and demand consistently outpaces customer growth.

Whereas in industrialized countries water is the blandest of commodities, an amenity only missed when its supply is disrupted, approximately half of the world still endures water and sewerage services inferior to those available to ancient Greeks and Romans. In developing countries, securing drinking water consumes a significant portion of each day; to their emerging middle classes, water and sanitation are luxuries that command a premium because of the head start such basic health services provide the young. And it is this infrastructure or want thereof that will be the primary driver of the coming boom, and which a UN panel estimated would need to be in excess of $180 billion per year just to meet the needs of developing countries.

Many industrialized countries’ infrastructure appears to be living on borrowed time. The majority of infrastructure problems revolve around neglected or decaying systems unable to cope with increasing wastage, which in turn is being exacerbated by increasing demand. Many European cities lose as much as 30% of the water in their antiquated systems to leakage. In the US, which has the fastest growing population of any industrialized country, infrastructure is simply not keeping pace with growth. There are more than 700,000 miles of water pipes nationwide, and water mains break roughly 237,000 times each year. A surprising amount of that pipe is more than one hundred years old, and some systems are amalgamations of various pipes of various ages from various systems cobbled together ‘to make do’ years ago. Exurban sprawl is over-taxing once rural systems not designed to handle the increased demands and loads. Terrified to even mention raising taxes to pay for the needed repairs and upgrades, which the American Water Works Association (AWWA) in 2002 estimated to be as high as $6900 per household in some rural areas, weak-willed politicians with a long term planning horizon that extends only as far as the next election have been deferring the issue to their successors now for decades.

This political climate reflects the slow motion collapse of water infrastructure itself. Just as in the case of petroleum and energy consumption, Americans are the most profligate in the world in terms of water usage. Politicians of all stripes avoid this issue like the plague because Jimmy Carter demonstrated that advocating conservation and responsible lifestyle changes is the second fastest way out of office. These same politicians who have refused to address the problem have all too often demonstrated their propensity for letting crises develop before over-reacting to them, and the ETR expects this behavior to continue. Having misallocated resources elsewhere, the best response municipal governments can muster is to abrogate responsibility and pave the way for big business to respond to the problem via increased privatization. Water rates are already rising faster than inflation, and just as higher petroleum and energy prices are beginning to take a toll on consumer spending habits, the ETR expects further increases in water rates to fund long-ignored infrastructure repairs will further exacerbate household savings shortfalls.

If the situation domestically is problematic, internationally it’s worse.

Amazingly, as much as 30-40% of water being transported worldwide is lost to pipe or canal leakage and illegal tapping. Further, the incidence of both chronic water shortages and water-borne illness is increasing--rapidly. Spawned in part by governments reallocating water resources away from agriculture to industry, which promises a higher return on water investment, rural poor in developing countries are migrating to urban slums at such a rate that by 2007, for the first time in history, half of the world’s population will live in towns and cities. In China, for example, where this migration from rural to urban living has been pronounced for the last 15 years, 400 of the largest 670 cities are operating in serious water deficit and over-taxing sewage treatment facilities if available at all. According to a 2003 UN report, between 1970 and 1990 per capita water use in developing countries decreased by one third, putting their overall water usage at between 30 and 50% less than developed countries.

Globalization is also contributing to this mass migration. The jobs are in the cities. Agricultural subsidies in industrialized countries have resulted in trade spats in which rural farmers in developing countries have been for all intents and purposes the victims of dumping. This puts more rural people out of work and drives them to rapidly expanding mega-cities (populations in excess of 10 million) in India, China and elsewhere in search of work, thereby providing an endless stream of labor for industry. However, industry cannot function without clean water, and before committing to new projects in developing countries feasibility studies now place increased emphasis on reliable water sources and waste water treatment facilities.

Of the top ten of these mega-cities, seven are in developing countries, and all are outpacing their industrial counterparts in terms of the rate of expansion. With the possible exception of Sao Paulo, every one is experiencing a high level water stress (see map below).

DETAIL 2: “...groundwater depletion is a phenomenon of the twentieth century, made possible by the availability of electricity and cheap pumps.”

Two time-honored responses to fresh water shortages have been pumping water from underground aquifers and building dams and reservoirs. Combined, these two methods of securing fresh water have contributed significantly to both the development of the American southwest and the Green Revolution of the last fifty years which has managed to keep the specter of famine at bay in the face of an exploding world population. It is widely perceived that pumping more water and building more dams will also be the responses in the future. The ETR does not believe these responses will be the panacea of yesteryear: the former is falling victim to technology and the latter to the law of unintended consequences.

Only about three-tenths of one percent (.3%) of all the water on the planet is available for human and animal consumption. The largest source of ready fresh water is found in underground aquifers, which contain approximately 30 times more water than is found in the world’s lakes; such groundwater is usually cleaner than surface water. As it stands now, more than 50% of the US and 25% of the world depend on aquifers for drinking water; Europe and Russia rely on groundwater for up to 80% of their needs. Around the world, twelve mega-cities, including London, Bangkok and Shanghai, similarly rely on ground water reserves for primary supplies of drinking water.

Provided adequate recharging and protection from pollution, which suggests prudent management, aquifers could allow for indefinite extraction. Water equates to food, however, and those provisos have been subordinated by the availability of inexpensive pumps and the need to feed burgeoning populations. A tidbit of trivia that puts pump usage into perspective somewhat is that so much water has been drawn from aquifers over the last century that it has measurably raised global sea levels. As can be imagined, groundwater depletion now exceeds replenishment by an estimated 4% annually and presents severe problems around the globe, notably in China, India, Pakistan, the Middle East, North Africa, and Mexico.

In many cases aquifer depletion has lowered water tables such that the resulting subsidence has left buildings standing cock-eyed. In others, depletion has compacted aquifers’ sediments, irreparably damaging their ability to hold water in the future. Many deep aquifers, such as the massive Ogallala in the US or the Nubian in Saharan Africa, have a recharge rate that runs to centuries, if not millennia, making such water sources for all intents and purposes nonrenewable; this can generally be said to be true for aquifers in most low rainfall regions of the world. Like river deltas, coastal aquifers, if drawn down too severely, can be inundated with salt water and ruined (see diagram above), as is the case in parts of the Gaza Strip, Florida and the Indian state of Gujarat.

With good water management, aquifer recharge rates can be significantly augmented. Two interesting examples are the region surrounding Los Angeles and certain areas of the Middle East. In the case of the Los Angeles basin, during the winter months when demand is low water authorities continuously pump excess precipitation, recycled wastewater, and water diverted from the Colorado River into the local aquifers to store it for the summer months of increased demand; the ground in the Santa Anna basin is so sponge-like that it regularly rises and falls as much as 5 inches/11 centimeters over the course of a year. In the Middle East, various countries are pioneering the concept of combining desalination with aquifer storage and recovery, which essentially allows for large volumes of water to be stored with minimal throughput, thereby reducing both the evaporative loss and the operating costs of the desalination facility.

Increased water scarcity is leading to increased competition. The UN cautions that aquifer and riverine sources of fresh water may well become flashpoints of regional conflict in the next 50 years as the world attempts to deal with the projected tripling of water demand. Major aquifers, such as the Nubian beneath the Sahara Desert and the Guarani in South America, are sources of animosity between the countries drawing on them now. Major rivers, including the Rhine, Danube, Niger, Nile and Zambezi flow through nine or more countries-the majority of which have no water treaties or agreements on how to share the water.

Collapse of the world’s groundwater supply is not imminent. However, ever-increasing reliance on groundwater to irrigate marginal farmland or for use in areas already experiencing acute water stress is clearly short-sighted and unsustainable; yet that is exactly what is transpiring throughout the world, including the United States and Europe. Better water management is widely considered to be critical going forward. Similarly, building more dams and reservoirs, although certainly part of the equation, is not the answer.

It is startling to contemplate the notion that billions of years ago the oceans were full of fresh water. The ocean’s 35,000 parts per million (ppm) salinity level of today is the accumulation of eons of river borne salts and minerals being washed downstream in a natural rinse cycle that over vast amounts of time led to the world’s soils becoming arable - and staying that way. Damming rivers and streams to collect and store run-off for later use in irrigation is one of the most important developments in man’s history. Paradoxically, this same vehicle that gave rise to civilization in numerous cases sowed the seeds of its destruction as the irrigation and land-clearing practices associated with dam-building eventually led to the twin environmental degradations of soil destruction and desertification.

Of course, past civilizations did not know then what we know now. And to modern man’s credit, some dams and reservoirs are actually being dismantled in an effort to return riverine systems to their original condition. But what we have recently learned will have little bearing on our continued overwhelming reliance on dams and reservoirs. Without the 70,000 dams that collect and store approximately half of the rainfall received each year, the US would be a decidedly different place: the desert of the American southwest certainly would not be able to support its 23 million inhabitants were it not for the Hoover Dam. However, between a general lack of suitable rivers to dam and strong environmental opposition, the US may well be approaching the limits of dam-building. But that is not the case worldwide where such responses remain viable if not environmentally sound in practice (see below). For example, where Europe makes use of 75% of its hydropower potential, Africa barely utilizes 7%, leaving a great many opportunities to better both water storage and economic development.

Worldwide, reservoirs hold as much water as is contained in Lakes Superior and Ontario combined. Water storage has shifted so much weight that geophysicists believe it has slightly altered the Earth’s rotational speed, tilt of its axis, and shape of its gravitational field. But for all of the stunning accomplishments represented by these figures, and acknowledging that dams have made tremendous contributions to our way of life, the collateral damage has been equally staggering.

In the last two hundred years the amount of irrigated land worldwide has increased thirty-fold. Because it is not uncommon for farmers to get water for as little as one-fifth the cost of urban users, they have absolutely no incentive to invest in technological innovations or methods to help conserve water. The resulting excessive irrigation practices have contributed to fertilizers and pesticides seeping into ground water on one hand while also floating minerals and salts to the surface of the soils being watered on the other, damaging both. The cycle of water being stored in reservoirs, distributed via canals etc., irrigating crops, and the excess run-off being returned to reservoir storage to repeat the process over again is so wasteful that as much as half of the water intended for agricultural use is lost and never contributes to food production. This continual concentrating of salts in the water during this cycle, which is called salination, is such it corrodes pipes in Los Angeles, San Diego and Phoenix; and the resultant slow poisoning of the soil has led to the loss of approximately 20% of the world’s agricultural land: an estimated 1,000,000 hectares/ 2,471,000 acres of farmland are lost each year, with twice as much again being adversely affected and set on the path to degradation.

Another consideration is that major dam projects are so horrendously expensive that only governments have the resources to fund them. However, this also means that governments determine how the water is allocated, and especially in the US water policy is all too often swayed by powerful lobbies, which has led to stupendously wasteful practices. For example, agriculture contributed $22 billion dollars to California’s $1.3 trillion dollar economy in 2002 and was allotted 80% of the state’s water; yet dollar for dollar virtually any other industry represented a better return on water investment than agriculture.

(to link the article above use: #WA11)

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