1. The Elephant Pump

The Elephant Pump was developed and tested in Zimbabwe by Pump Aid and is based on a 2000 year old Chinese design. It is constructed from basic materials, using a very simple design. The pump is very durable and can be maintained by local people.

For Further details: http://www.pumpaid.org/

2.Development of Ultra Acid-Base (UABTM) Water Well Treatment Technology

The Ultra Acid-Base (UAB^TM) water well treatment technology was developed during the initial phase of the Sustainable Water Well Initiative (SWWI) undertaken by Prairie Farm Rehabilitation Administration (PFRA) Technical Services. It  is aimed at extending the life of water wells by counteracting the clogging effect that groundwater bacteria have on water wells. The goal of the SWWI is to pursue methods that will sustain the existing water well infrastructure by providing improved advice to rural clients on the diagnosis, prevention, and rehabilitation of well problems

For further Information: http://www.agr.gc.ca/pfra/water/swwidev_e.htm

3. Solar Water Distiller

Solar Stills operate on the same principles that produce rainfall. The sun is allowed into and trapped in the Still. The high temperatures produced destroy all pathogens. The water evaporates, and in this process, only pure water vapor rises in the Still, only to condense on the glass. The glass is sloped to the south, and the condensed water runs down the glass and is collected in a trough. The water is allowed out of the collector through silicone tubing, and is collected in 5 gallon glass jugs. There are no moving parts in the solar still, and only the sun's energy is required for operation.

For further Information: http://www.thefarm.org/charities/i4at/surv/sstill.htm

4.Hydraulic Ram Pump

A hydraulic ram or impulse pump is a device which uses the energy of falling water to lift a lesser amount of water to a higher elevation than the source. See Figure 1.  There are only two moving parts, thus there is little to wear out.  Hydraulic rams are relatively economical to purchase and install.  One can be built with detailed plans and if properly installed, they will give many trouble-free years of service with no pumping costs.  For these reasons, the hydraulic ram is an attractive solution where a large gravity flow exists.  A ram should be considered when there is a source that can provide at least seven times more water than the ram is to pump and the water is, or can be made, free of trash and sand.  There must be a site for the ram at least 0.5m below the water source and water must be needed at a level higher than the source.

For further Information: http://home.att.net/~africantech/ESME/hydram2/HydRam2.htm

5. Solar-Powered Livestock Watering Systems

Remote or off-grid power sources—including solar panels, mechanical windmills, and portable generators—can pump water for livestock in locations where electricity from power lines is unavailable. By encouraging animals to move away from lakes and streams, these systems give livestock greater access to forage. They also reduce livestock pressure on stream banks—preventing nutrient loading, damage to streamside vegetation, erosion, and pollution. Solar pumping works anywhere the sun shines, and most parts of the United States have plenty of sunlight to run these systems. Solar pumping is a natural match for summer grazing applications, since it produces the greatest volumes of water in sunny weather and during long summer days—exactly when animals need water the most. With proper precautions, solar pumping systems can be used through the winter months too, even though shorter daylight hours will cause reduced water output.

For further Information: http://attra.ncat.org/attra-pub/solarlswater.htm

6. BETTER TECHNOLOGY MEANS BETTER WATER  

Water Health International's patented, award-winning technology, UV Waterworks™ (UVW™), employs a unique ultraviolet system configuration in which the ultraviolet light source is suspended in air, and features a specially designed, gravity-driven water flow channel. UV disinfection is an extremely safe, reliable, and environmentally superior method of disinfecting water for human consumption and other uses. UVW delivers a high dose of ultraviolet light that inactivates microorganisms through disruption of their DNA processes. When organisms try to replicate, they die.

UV Waterworks has been tested extensively by third-party laboratories to verify its efficacy against a broad range of bacteria, viruses, and parasites that can cause acute, often fatal, waterborne diseases. Coupled with a multi-stage filtration system that also removes silt, bad tastes, and odors, UV Waterworks is a complete water-disinfection solution. The water produced exceeds the potable water standards of the World Health Organization.

In both its operational characteristics and application potential, UV Waterworks' process and design represent a significant departure from existing potable water purification processes, such as conventional UV systems, reverse osmosis, ozonation, and chlorination. Benefits of the technology include high efficacy, high throughput, a small footprint, and long-term reliability. The modular design means that systems can be scaled to serve communities of various sizes. Non-proprietary components that are coupled with UVW in WHI's installations are readily available in most parts of the world. Ease-of-use and low maintenance requirements mean that our systems can be deployed even in the most remote locations.

(Source : http://waterhealth.com/water-solutions/technology.php)