How to give money to Akvo projects

5 February 2010 by Mark Tiele Westra

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At Akvo, we have a host of fantastic projects all deserving of your money, but what’s the most effective way to actually donate? In an ideal world, every cent of a donation would go directly to the project, but in the real world, this is surprisingly hard to achieve. For instance, PayPal – the most used payment gateway – currently charges 3.9% plus 35 cents of each transaction.

In the Netherlands, the banks have put together a rather neat new payment system, called iDeal. The idea behind it is that people can handle online payments using their own bank’s system, and therefore without leaving the payment environment they are used to. The best part is that the fee is only 99 cents per transaction, regardless of the amount.

One of our star programmers, Paul Burt, has done some heavy Django lifting to integrate iDeal into the Akvo system. To do this, he used Mollie, a smart company who have absorbed the complexity necessitated by the banks and come up with a simple programming interface (API) to deal with iDeal payments. True to his (and our) nature, Paul has created an open source library in Django, which from now on will make it much easier for others to integrate iDeal into their websites. Paul explains his efforts in the video.

So, people of the Netherlands, start funding those fantastic projects!

Mark Westra the is editor of Akvopedia.

The rope pump

5 February 2010 by Mark Tiele Westra
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A rope pump mounted on a well in Zambia. Using the rope pump allows the well to be covered, which vastly improves the water quality. Photo Henk Holtslag

In the water sector, as elsewhere, good ideas can be surprisingly old. One such old idea is the rope pump, which is over 2000 years old and was used in ancient China. A rope pump consists of a pipe that reaches down to the water, a rope or chain through the tube, washers attached to the rope that fit snugly inside the tube, and a wheel on top to draw the rope with washers through the pipe. The water is held between the washers in the pipe, and is pulled to the surface.

In its many ancient incarnations, the rope pump has been named the ball-and-chain pump, Chinese liberation pump, Noria pump, paternoster pump, chain pump, and many others. Its original design used tubes made of wood (hollowed-out tree trunks, for example), and big balls of leather or wooden plates. These earlier variations of the rope pump were used extensively for irrigation in agriculture and in the large and leaky wooden-canvas-hemp ships of the day, to pump out any unwanted water and prevent sinking.

Modern times
In the 70s, R. Van Tijen of the Dutch Demotech organisation reintroduced the pump, and started using modern materials such as PVC pipes and rubber car tires. It was introduced in Africa as “rope and washer pump” as a low lift pump for irrigation and family wells in the 70s. It never really took off, probably for reasons as its low lift capacity, its “Stone Age” image, and the lack of involvement of the local private sector.

Success in Nicaragua
This completely changed in Nicaragua, where the rope pump was introduced in 1986. The Dutch organisation SNV worked on technical improvements and first dissemination, after which the local company Bombas de mecate SA made it a commercial success through sales to the private sector, and later on to NGOs and government. Now the rope pump provides over 35% of the rural water supply in Nicaragua and is produced by some 20 local workshops. A host of models has been produced, including rope pumps powered by bicycle, windmills, animal traction, and small engines.

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Left: a rope pump used by a single household in Nicaragua. Right: a rope pump mounted on a borehole in Mozambique, supplying water for 30 families. Photos Henk Holtslag.

Nowadays, an estimated 100.000 rope pumps are used by 4 million people, of which around 70.000 in Nicaragua, 15.000 in neighbouring countries, 2.500 in Cambodia and India, and 15.000 in various countries in Africa. Particularly successful is the “Elephant pump”, which consists of a rope pump surrounded by a concrete structure. The Live Earth partner Pump Aid has placed 5.000 Elephant pumps in Zimbabwe and Malawi, with about 80 added each month. NGOs such as Water Aid, Care and Unicef are using rope pumps in their programmes.

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A recent innovation: the rope pump used for rice paddy irrigation in Vietnam. Photo Graham Gripps, SNV Vietnam.

Suitable conditions and limitations
There are different opinions on the question if rope pumps are fit for communal water supply, as the pump is semi-open, of lightweight construction, and requires frequent maintenance. On the one hand, in many countries the rope pump is used for communal water supply, and in Nicaragua the rope pump is the national standard for hand pumps used by organisations such as UNICEF, CARE, etc. There, the recommended maximum number of families for one rope pump is about 20. On the other hand, in many countries governments are reluctant to use the rope pump because of perceived problems.

To help the successful introduction of the rope pump in a new area or country it is strongly advised to start with promoting the rope pump as a family pump or as a pump for irrigation used by larger groups of farmers. If it works well, usage can be expanded to communal pumps, in cooperation with local or national governments. In all cases it is strongly recommended to use updated manuals combined with training by professional organisations. After all, simple is not easy.

Mark Westra is editor of Akvopedia.

Links:

Making sense of now

1 February 2010 by Mark Charmer

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If you’re in the UK and able to use BBC iPlayer, I’d encourage you to watch the first episode of “The Virtual Revolution”, Dr Aleks Krotoski’s exploration into how the world wide web “is reshaping every aspect of our lives”.

I began working in information technology in 1992, in ICL, a kind of British version of IBM that didn’t really survive the death of the mainframe. It was full of people trying to preserve the way IT had been sold and delivered in the 1980s. Big expensive deals with big companies and governments, involving armies of advisors and complicated computers and networks, for people who had fond memories of the typing pool. Most people I met sat around discussing company car scales, and plans for golf. I used to sit at my desk in Old Windsor, a Windows 286 PC whirring away, waiting for 5pm, when the afternoon Concorde flight from New York would roar past my window, on finals into Heathrow. No doubt carrying Joan Collins, or Phil Collins. Somebody else’s world, that I could only watch.

I then worked at Apple, in Poland, right after the fall of the iron curtain. From our (Cupertino-style) vantage point above a hat factory in the Warsaw suburbs, Eastern Europe was an exciting but impenetrable market. Poland didn’t need Apple’s technology of the early ’90s – it needed cheap PCs and lots of them. Remember, the world wide web was only just being invented. It was a turbulent time for Apple, too. Globally it was losing market share and grappling with expensive products that were underpowered, too early for mainstream adoption, or that it didn’t know how to bring to market. In 1993, we’d be playing with Quicktime in the office on a Quadra 660AV – videos on a computer – little postage stamp videos. And we’d be going “Wow!”. But the Polish buyers couldn’t use those features – they were just fun stuff. Then there was the Apple QuickTake digital camera. For about $400 it would hold 16 digital photographs. “Why do I need digital photographs, when the cameras are expensive and I can’t do anything useful with the photos?” people rightly asked. Warsaw at the time was filling rapidly with Kodak and Fuji logos, as film camera sales boomed. It wasn’t the right time.

Like most companies, these firms were grappling with the future – each unsure how things would evolve. ICL eventually disappeared, its lucrative government contracts being absorbed into Fujitsu. Apple spent another five years in the doldrums, while Microsoft, Compaq and others brought personal computing to the masses. Until it got Steve Jobs back and launched the iMac.

It’s easy for outsiders to believe everyone who works in information technology actually understands the changes going on in the world, and builds computers, software and businesses that are in tune with them. They’d be wrong. There are many that don’t – the world is full of rubbish technology, or good technology, that’s badly timed. Stuff designed in a bubble, that doesn’t have a purpose, that doesn’t change how you do things with other people.

But something extraordinary has happened in information technology over the past five years, something that I still struggle to put my finger on. Krotoski’s programme is in tune with our time and gets under the skin of this change – gets more closely to the heart of what’s changing right now – than most other TV programmes about computing.

The heart of this change in computing is essentially political. Computing is now much more open than it was and knowledge flows around much better than before. Software is often free, people can publish freely, they can change things and republish improved versions. Mistakes are no longer disasters – you can change things. The devices are now much better, too and they’re not just great for people who type – they’re for people who see images, who can express ideas simply, rather than in great tomes. They work in more places, too, and simply allow you to do more things. And they’re much cheaper.

It’s making the people who used to control things – who hoarded information, or resource, who held a lid on people’s talents – well, it’s showing those people up as out of touch, as no better, and often worse, than those with the guts and imagination to go out and make things happen. The people who share, who adapt, who listen – the people committed to develop their understanding of problems, and committed to helping others do the same.

The rash of analysis and “Meh” commentary from people last week after the launch of Apple’s splendid new iPad seems so banal in comparison to the fact that fifteen years ago, almost nobody instinctively felt the power of IT to change how we live.

Today almost all of you feel it a little bit. From my friends this morning in Dhaka in India, Cork in Ireland, in The Hague and in New York, watching my “Twitpics” – yes digital photos that bounce around the world instantaneously via Twitter. People who feel part of my day, as I do theirs. It’s about how people I know in America can follow and build upon the work of people I know in London, in completely new ways, whenever I pick up my phone or a cheap video camera. It’s felt by people who guiltily use Facebook at the office – who understand that all these tiny insights into people, these tiny opportunities to interact, are much more powerful than typing long group emails, that noone reads. Or writing reports that only one person will ever receive, and probably won’t read. They *know* something’s changing. They just can’t quite put their finger on it.

The thing that now holds us back is not the technology. It’s our ability to break out of long-established assumptions about how to work, and how quickly you can make good things happen. It’s about whether those we work for – those we work with – have the wisdom and courage to give others permission to do what is now possible. It’s the greatest of times.

Mark Charmer is a co-founder of Akvo. He’s talking at this Thursday’s Media140 conference, part of Social Media Week, in London.

Pump Aid lifts the lid on Live Earth UK

28 January 2010 by Mark Charmer

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I got the chance to talk this morning with Stephen Brown and Rachael Phillips at Pump Aid about the launch plans for Live Earth London and Manchester.

Photo: City Hall, London, where Live Earth London’s PR kicks off this Monday morning, on “the scoop” steps, with an 8am media photocall. It will feature 250 pairs of training shoes, emphasising the number of people in a community that a single Pump Aid Elephant Pump can provide with clean water. (CC-BY-SA – by Mark Charmer)

In the video below, they outline plans, including a photo-launch this Monday, and their social media work.

Pump Aid was officially confirmed last month as the lead recipient for the British Live Earth Run for Water events. It’s netted some great press coverage in recent weeks, including this piece in The Times and this in NGO-trade publication ThirdSector. Oh and a wonderful piece, again in The Times, by Matthew Parris. The Dow Live Earth Run for Water (website here) aims to be the world’s largest ever global initiative focused on raising awareness and funds to tackle the global water crisis. All the projects that are being funded from money raised globally will feature web and SMS reporting via the Akvo system, and I’m hoping Pump Aid can lead the world by doing really cool project updates from their projects across Africa this year. You can see Pump Aid’s project list here.

Akvo helped connect Pump Aid and Live Earth together in the summer, after we’d been introduced to Pump Aid by the marvellous Poop Creative guys – so it’s fantastic to see things moving so quickly. We’re closely following the Live Earth Amsterdam event, too, and in the spirit of open source marketing, we’re hoping that each organising team can share their plans openly, meaning more successful events that raise more money for water and sanitation projects.

Mark Charmer is a co-founder of Akvo.

The aid information challenge

26 January 2010 by Mark Charmer

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I got together with the team yesterday behind the Aid Information Challenge, a ‘barcamp’-style series of parallel events that will be held in London and New York on Friday March 5th (NYC) and Saturday March 6th (London), 2010.

Photo: Simon Parry, Jonathan Gray and Cormac Nolan. Borough Market, Southwark, London. 25 January 2010.

The London event’s being driven by two key organisations – the Open Knowledge Foundation and Publish What You Fund – and seeks to build a community of people who are interested in (and capable of working with) datasets generated around the spending of international development aid.

Here’s the basic lowdown:

Governments around the world are opening up data for reuse by the public – enabling the creation of websites and services which allow people to explore this information in new ways.

We are helping to open up new datasets related to international development, and are looking for compelling ideas and exciting prototypes for things that could be built using this material. The Aid Information Challenge will be an opportunity for you to refine and develop your ideas, and present them to a panel of leading web developers and representatives from funding bodies, government departments and NGOs. There will be cash prizes and opportunities for collaboration and support to help make your idea happen.

Clearly this is a topic of huge relevance to Akvo and our partners. Making progress visible about water and sanitation development projects, in ways that others can learn from and build upon, is at the centre of Akvo’s strategy. We know instinctively that once that happens, quality will improve and more money will flow to projects. But it’s great to find people who develop the case – and bring it to governments, donors and NGO leadership.

I’ve attended a series of events over recent months related to the opening up of US and UK government data – a great notion. Yet these have tended to share one trait – a fixation with the big pile of data that will be available, usually in the form of statistics or documents, for all to use. But what is the point? Data is overwhelming. You have to decide what you want to do, what you want to understand, what you want to change. And then ask questions. And then see what mixture of data can help you answer them. Often it will be combinations of datasets that have never been mixed before, to answer questions that we’ve never before had the chance to ask. It could be photos, or video, rather than spreadsheets. So here’s what I’m stressing – don’t get fixated by the data. Get fixated on trying to make things happen. Real, tangible improvements to people’s living conditions.

I first met the Open Knowledge Foundation about 16 months ago – it’s led by Rufus Pollack with the support of the smart and passionate Jonathan Gray, its community manager. Rufus did a presentation at the Camden Roundhouse in 2008 which set out the way open source organisations work, and the kind of people who need to lead them, that was absolutely in tune with my experience. In particular he described Thomas Bjelkeman’s personality traits down to a tee. Which I’ve gotta say was kinda reassuring. OKFN focuses on promoting and supporting the sharing of knowledge through open licenses across all areas, so it’s really exciting to see it turning its spotlight onto international development aid here.

Yesterday was my first meeting with Publish What You Fund. In the interview below I talk with Cormac Nolan, who’s the man to talk to about the upcoming event. I also had the chance to do a fairly in-depth interview with Karin Christiansen, its director and founder, which you can find over on WaterCube.tv here.

You can follow Publish What You Fund on Twitter.

I’ll add links to this blog, as more details get finalised.

Mark Charmer is a co-founder of Akvo.

Constructing low-cost water tanks with ferrocement

26 January 2010 by Mark Tiele Westra

When I say ‘water tank’, what image is conjured up in your mind? Is it one of those large black plastic tanks which you see so frequently in developing countries, usually perched on top of a small tower or on a roof? Millions of those are used around the world, so that image would be very appropriate. When I say ‘water tank’, however, I think of something else entirely. I think of ferrocement: the best, strongest, durable, cheapest, and most versatile construction material I know. And I think of the water tanks I have built myself, using it.

The term ‘ferrocement’ refers to cement reinforced with some sort of steel, be it thin wire, wire mesh or thicker reinforcement bars. Cement is great in withstanding pressure, but not very good in withstanding tension forces. For steel wire it’s exactly the reverse. A combination of the two yields an excellent construction material, which does not rust, rot or blow down in storms. Ferrocement is different from ordinary reinforced cement in that a lot more steel is used, along with a strong cement mixture. This leads to lightweight structures which can have almost any shape.

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A shelter at an orphanage in Rwanda, made with ferrocement and bamboo. Photo ferrocement.com.

Boats, houses, statues
The ferrocement technique dates back to the times of Greek fresco making and the sculptural wire-and-plaster techniques of the times of Leonardo da Vinci, adapted to modern materials. Boats have been built with ferrocement, tanks (the military type), houses, statues, etc. With ferrocement, it is easy to construct earthquake resistant houses cheaply. Seeing the devastation in Haiti, it is a sad fact that this fireproof and earthquake-safe technique is so seldom used in modern construction.

Water tanks
Back to water tanks. Say, you need a 2 m2 ferrocement water tank for your rainwater harvesting system. The classical technique is to start with building a cage of steel reinforcement bars, covered with chicken wire mesh. An alternative is to start with an inner form of metal sheets, which is later removed. Or, for smaller tanks, a sack filled with sand is used. Once this structure is established, a cement mixture is applied. As ferrocement is much stronger than masonry, the thickness of the walls is in the range of 10-30mm. During curing (at least 10 days, although 30 is better) the cement is kept wet and wrapped in plastic sheet. Fill’r up, and enjoy.

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A ferrocement tank under construction in Guinea-Bissau, at the Projecto Agua Limpo Tombali project by De Gevulde Waterkruik. Photo: Paul Akkerman.

Your tank will be a lot cheaper than a plastic tank, have a lifetime of at least 25 years, and is easy to repair in case of cracks. The technology is extremely simple to implement, and semi-skilled construction workers can learn it with ease. Such tanks have been used on a wide scale in Asia and in some African countries, and there is huge scope for increased use for rainwater harvesting systems.

Tanks take time
Are there any disadvantages? Well, they take quite some time to build, so they are too expensive for commercial application in the western world. But this is a great advantage for small-scale enterprises in developing countries, who can employ low-cost labour. Highly motivated ferrocement entrepreneurs around the world create aqueducts, water and septic tanks, drainage systems, large flower pots for hotels and parks, shade roofs, and small houses. The more the better, I say.

Mark Westra is editor of Akvopedia.

Links:

Akvo reaches into its first restaurant

25 January 2010 by Luuk Diphoorn

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Last week I dropped in to talk to staff at Le Connaisseur restaurant in Utrecht, The Netherlands. It’s the very first of what I hope will one day be thousands of restaurants selling bottled water to fund Akvo projects.

Photo: The Restaurant ‘Le Connaisseur’ in Utrecht, The Netherlands.

This is the result of the latest partnership between Akvo and Earth Water Netherlands. The tools we have developed have made it easy for Earth Water to choose specific projects to fund, in the knowledge that their customers can see the projects they’re supporting online and follow progress. Akvo’s system means there’s no need for Earth Water to set up complicated liaison processes with partners running each project it’s supporting.

At first, Akvo focused on supporting Earth Water’s events – providing in an online form the projects and storylines they needed to raise funds via dazzling high visibility toilet blocks at the 2008 and 2009 Parade Festival, a touring theatre festival that passes through four Dutch cities, including Utrecht.

The chance to extend our work together evolved this summer, when the restaurant ‘Le Connaisseur’ was struggling with a rise in the costs their water supplier was going to charge them. Jorrit van Kooi, a manager at the restaurant, who had spent time in Malawi as a student, came up with the idea that if they were going to charge customers more for water anyway, some of it should also go to a cause. After browsing the web they got in touch with Earth Water and talked their ideas through at the Parade in Utrecht. It was an instant match!

Le Connaisseur is selling Earth Water to raise money for this particular project in Ethiopia. It’s quickly turning into our most intriguing mix of funding partners to date – a great example of what we want Akvo to make possible, via the web. The project, which aims at providing 5000 people with clean water in Ethiopia, was posted on Akvo by our support partner Women for Water (WfW) just before we attended the 5th WorldWaterForum in Istanbul in March 2009.

An Africa Interactive reporter was sent to the field to make this video about the project. In the months that followed, private donations were starting to come through. The first big breakthrough came though when our strategic partner Aqua for All decided they would double all the donations made to the project.

Yet the project was still in need of a substantial amount of money. In September 2009 that changed when Twestival Karlshamn, a party for Twitter fans in this Swedish seaside town, had decided that they would support this project. The Swedes managed to raise about €1,000 Euro.

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Twitter fans supporting Akvo at the Twestival Karlshamn in Sweden

Just this weekend, the project saw the Warhammer for Water fundraisers add another €700 Euro, in a gaming tournament. Now Le Connaisseur is stepping in to take it to fully-funded status.

This month the restaurant started selling bottles of Earth Water to their customers for €2.45 Euro (for each bottle 50 cents goes to the project) to raise the remaining funds that are needed for this particular Akvo project. They also encourage visitors on their website to donate directly through an Akvo ‘widget’, embedded in their website.

Here’s the interview I shot of Jorrit when I visited them (below).

Even though all the necessary funds haven’t been pulled together yet, we now have a solid path to final funding, and have passed 70% of target, which Women for Water Partnership agree is enough assurance for the field partner HORCO to get started on implementing the project. We are expecting updates to come in from the field any day now.

This is a good example of how people can use the tools we’ve developed here at Akvo. In this case a mix of a donor NGO, passionate individuals, Twestival visitors, a water company, Warhammer fans, and a restaurant can all actively fundraise themselves to make a project happen. Everyone can make a difference, easily. So can you! All you need to do is click on the donate button in the project widget below, or come up with your own idea on funding a project:

I really want to thank everybody who has been involved in this one way or another. It’s brilliant stuff.

Luuk Diphoorn is project coordinator with Akvo

Warhammer for Water raises €700 Euro

25 January 2010 by Peter van der Linde

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This weekend, Frenzy, the Dutch Warhammer championship, took place in the Rai in Amsterdam. For amateurs Michel, Merijn and Sjoerd (my brother) it was D-Day for their Warhammer for Water initiative.

Picture above: A close-up of the ‘Warhammer for Water’ army. These hand-painted heroic scale miniatures are between 20 mm – 50 mm tall.

After the guys glimpsed the Africa Interactive video of the project , they settled on supporting this Safe Drinking Water & Women empowerment project in Addis Ababa, Ethiopia, run by Akvo support partner Women for Water Partnership and field partner Soroptimist International of Europe Club. It’s a Live Earth Run for Water project, which has already received money from Twestival Karlshamn, Aqua 4 All and HORCO. The budget of €11,740 (about $16,000) will provide 2 functioning water systems, so 5,000 people get access to improved water for 30 years. It will include a training and education component too – at a rate of around 200 people per year. Before the championship they’d convinced 35 people to sponsor this Akvo project, which they’d chosen online, with the donation amount varying from €10 to €30 Euro, depending on their final ranking in the tournament. So this game was no laughing matter – well, it was actually.

Anyway, back to my job. Which was to be Saturday match commentator….

After some coffee Sjoerd and Merijn unpacked their combined dwarf and woodelf army, ready to engage professional opponents. But just a few minutes into the first match they lost an entire regiment, and what followed next can only be described as a wipe-out.

With the support of family and friends the second game started a lot better. These opponents did not seem used to both supporters and camera’s being present, and after a big clash Sjoerd and Merijn scored their first official minor victory. In the third game against a nicely painted lizardmen army (yes – I discover my inner nerd..) Sjoerd got substituted. Merijn and Michel thought hard before deciding to play all or nothing, ending in a solid victory! By doing so the guys ended 10th – out of 34 participating teams. That netted them €20 Euro off each donor who’d pledged to support them – 35 sponsors x €20 = €700 Euro. Awesome stuff!

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In game three Merijn and Michel decided to play all or nothing.

By the end of the day Merijn, Michel and Sjoerd got awarded the best sportsmanship trophy, and their Warhammer for Water initiative raised about €700 euro for the Ethiopian project. Coming on top of funds already gathered by Twestival Karlshamn, and just as the project becomes the star fundraiser for an Utrecht restaurant (more on that shortly), this money really counts.

More pictures of the day can be seen here.

Thanks guys for allowing us to have a close look into your secret hobby, and for making this happen. And the amazing thing? Girlfriends of Warhammer players actually came along to watch and cheer. Yes, they actually have girlfriends. Women for Water Partnership, you have a new army, a warhammer army. And it’s funding water projects.

Peter van der Linde is the partner – director of Akvo.

Why water pumps should be extremely repairable

19 January 2010 by Mark Tiele Westra

Did I mean ‘reliable’? No. Not necessarily. It seems logical to demand that water pumps be reliable, right? Shouldn’t the goal be to make water pumps that are of such a good quality, that they don’t need any maintenance, and will never break down? Of course, this goal can never be reached because everything that moves breaks down eventually. But should we at least strive to make a pump that fails only after a very long time, say 10-15 years? Surprisingly, this seemingly logical idea has some unintended and potentially troublesome consequences.

As an example, consider one of the most common pumps in Africa, the Afridev pump. It is very durable, sturdy, breaks down only after 10 years or so. A very nice, well-designed pump. In all of Africa, some 30% of these pumps are broken today, in some countries 70%, and they are not being repaired. What happened? And let’s be clear: the problem is not that things break down, because everything breaks down eventually. The problem is that they are not being repaired.

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A broken Afridev pump, which cost $1000 when it was placed. Can this be avoided? Picture Henk Holtslag

Is reliable really reliable?
Hard-won experience by field experts shows that one of the main shortcomings of this type of pump is, counter intuitively, the long time before maintenance or repair is necessary. Because they have to last a long time before failure or maintenance, they are heavy, sturdy, of high quality, and because they are so, they are expensive. Because of the high quality standard, the pumps are produced in countries that have the ability to do so, and need costly transport to their destination. The high costs of such pumps (typically about $1000 or more) means that the pumps are communal, because no government, let alone villagers themselves, can pay for such a pump for each family. And here the Tragedy of the Commons raises its ugly head.

Say, you live in a village, which has a communal water pump. It was installed by some organisation which you don’t quite remember about ten years ago, and it has worked fine ever since. At the time, you seem to recall, a water committee was formed which was supposed to collect money each month to cover the cost of maintenance and repairs, but after three years of good operation of the pump, this committee stopped its activities and the money was used for other purposes. Unfortunately, today the pump is broken, and needs an expensive repair with spare parts from the capital of the country. Who is going to pay? The problem is that high-quality communal pumps often just don’t fit the technology management capacity of a village.

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A ropepump, which cost $100 when it was placed. Here used by about 10 families. Picture Henk Holtslag.

Repairable pumps
Can we do better? Enter the idea of ‘repairability’. If you focus on repairability, the technology management capacity of people comes first. It is not a problem if a pump needs regular maintenance and repairs (within bounds of course, say, at most each 6 months), as long as maintenance and repairs are cheap, and can be carried out by the users themselves, a local caretaker or village technician. In fact, if regular maintenance and repairs are required, people will remember how to do it. Pumps that fall into this category are the rope pump and the EMAS hand pump.

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EMAS hand pump used by a single family, which cost about $15 when it was placed. Picture Paul Cloessen.

Because such pumps must be repairable, it also means that they need to be light-weight, of simple construction, without any special spare parts. Local production means the pumps don’t need to cross borders, reducing costs. All these factors mean such pumps can be made cheaply. Therefore, they become affordable for families, and then it is very clear who is going to pay when a repair comes along, and who should take good care of the pump to prevent damage. Fortunately, the repair will be affordable, because the pump was designed that way.

Studies in Nicaragua show that 95% of rope pumps stay in use after 5 years, because they are maintained by the users. In Bolivia, over 20,000 EMAS pumps are owned by single families, who paid for the pump themselves, without any subsidy.

Of course, you cannot expect the same level of service from a $10 PVC pump, a $50 rope pump, or a $1000 Afridev pump. And if the water is really deep, there might be no alternative for a communal pump. But it would be good to start focusing on what reliability really means: things should be available, and therefore easy to fix. Simple and cheap water pumps aimed at single families to small groups of families have great advantages, and deserve a lot more attention then they are getting now.

Links:

Extremely affordable gravity-powered water filters

11 January 2010 by Mark Tiele Westra

A question: if we can fly to the moon, can we make a $1 water filter for people to use in their homes? And, if the answer is yes, why haven’t we yet? This is one of my favourite things: the quest for extremely affordable point-of-use water filters.

There are some hopeful developments. After Hindustan Unilever had introduced the Pureit water purifier at a price level of $30 for a very well-designed and effective water filter, protected by 21 patents and using 5 water filtration steps, Tata Company recently introduced its Tata Swach water purifier, at $20, with 1 filtration step, but equally good-looking. And we already have the Vestergaard Live Straw Family filter, also at $20. In the open source hardware corner, the biosand filters and ceramic pot filters can work well. Lots of good stuff.

These filters all use some combination of microfiltration, disinfection and adsorption. Microfiltration simply blocks bacteria from passing through the filter by using a highly porous material in which the bacteria bacially get lost. Disinfection, for example using chlorine, kills bacteria and other pathogens using chemical means. Adsorption, finally, uses carbon to absorb molecules, improving taste, smell, and the colour of the water. Not all filters use all three, and this is where the main differences in quality lie.

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How a siphon filter works

The Siphon filter
So — $30$, $20, can we go lower? Enter the siphon filter. Produced by Basic Water Needs Foundation India, and sold under the brand name Tulip filter and CrystalPur, it is sold for $10. To reach that price point, the filter has been designed in such a way that only the most essential elements remain: a filter element, a tube, a tap. That’s it.

The ceramic filter element is made out of diatomaceous earth, a wonderful substance consisting of the fossilised remains of diatoms, a type of hard-shelled algae. Their beautiful little skeletons contain extremely small holes, which are very suitable to act as a bacterial filter. The filters are impregnated with silver particles, which reduce regrowth of bacteria. Although bacteria are filtered effectively, candle-type ceramic filters have lower removal efficiency for viruses. To effectively remove these, ceramic filter filtration needs to be combined with a disinfectant such as chlorine.

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Siphon filter demonstration in Mozambique

Why it is smart
The brilliance of the filter lies in the tube. Because a ceramic filter is highly porous, it needs a certain amount of water pressure to push the water through. In the Siphon filter, the tube is used to siphon the water from a higher water container to a lower one, creating about 70cm of water pressure. This is enough to suck the water through the filter, creating a flow rate of about 5 litres per hour. Plenty.

The filter is cleaned by closing the tap and squeezing the rubber bulb, which pushes clean water back through the filter, which cleans it. Called ‘backwashing’, this significantly prolongs the lifetime of the filter. Its small size makes it easy for small hardware and general stores to keep it in stock, and to distribute it on a large scale for emergency situations. The costs are kept low as storage pots for the water are not included: the filter can be used with storage pots that people already have.

At the moment, the filter is being implemented by EnterpriseWorks/VITA, and Connect International in Cambodia, Tanzania, Mozambique, Madagascar, Kenya, India, and other countries. Good luck people!

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