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== Jargon ==
== Jargon ==
* [[Suspended solids]]{{w|Suspended solids}} - Fine particles of dirt and clay found in water.  These particles are detrimental to the treatment process because their presence limits the efficacy of chlorine.
* [[Biochemical oxygen demand]]{{w|Biochemical oxygen demand}} - a measure of the organic pollution in the water.


Suspended Solids - Fine particles of dirt and clay found in waterThese particles are detrimental to the treatment process because their presence limits the efficacy of chlorine.
== Source Selection ==
When choosing a water source, quantity and quality should be evaluatedFor instance, surface waters are frequently and easily accessible but are also more prone to containing [[pathogens]] and suspended solids. It is also important to keep in mind that a larger quantity of acceptable water is preferable to a tiny quantity of pure water.


==Source Selection==
Some sources of water are as follows:
When choosing a water source, quantity and quality should be evaluated.  For instance, surface waters are frequently easially accessible but are also more prone to containing pathogens and suspended solids.


It is also important to keep in mind that a larger quantity of acceptable water is preferable to a tiny quantity of pure water
* [[Rainwater]]--harvesting requires an appropriate method of storage, especially in areas with significant dry seasons.


* [[rainwater]] harvesting. This requires an appropriate method of storage, especially in areas with significant dry seasons.  
* [[Tube wells]]{{w|Tube wells}}--may be relatively expensive, but often provides high quality water requiring little to no additional treatment, and typically more proximate than surface water sources.  


* {{WP|Tubewells}} may be relatively expensive, but often provide high quality water requiring little or no further treatment, with less travel time than surface water sources.  
Any source of water must be properly tested.  Simple initial tests such as those described in [Water Quality Field Testing] can be used in emergencies, but proper lab analysis should be done as soon as possible.
 
Wells should be elevated and located 100m from latrines, septic tanks, showers, and farm animals whenever possible. Choosing a water source close to the point of usage and at a higher elevation will minimize expenses associated with pumps and pipes.
 
== Pumps ==
* [[hand pump]] - a tried and true method of water pumping.
* [[rope pump]] - cheaper and more efficient than a standard hand pump.
* [[treadle pump]]{{w|treadle pump}} - resembles a stair-stepper, and is more efficient than a hand pump.
* [[hydraulic ram pump]] - uses the kinetic energy in a stream to pump a small percentage of the water to a higher level.
* [[roundabout play pump]]{{w|roundabout play pump}} - uses the kinetic energy of children to pump water.
* [[solar-powered pump]]{{w|solar-powered pump}} - typically cost prohibitive, water is simply pumped whenever the sun shines.
* [[wind pump]]


Any source of water must be properly tested. Simple initial tests such as those described in [Water Quality Field Testing] can be used in emergencies, but proper lab analysis should be done as soon as possible.
The principle of  [[Village Level Operation and Maintenance]]{{w|Village Level Operation and Maintenance}} is important with pumps to ensure their continued operation, but may be difficult in application.
 
== Points to Keep in Mind ==
* Extraction rights
* Proximity to use
* [[Piping materials]] available


Wells should be placed 100m from latrines, septic tanks, showers, farm animals, and uphill from the same where possible.
==Intake Designs==
[[Spring box]]{{w|Spring box}}


If at all possible, choose a water source close to the point of usage and at a higher elevation so as to minimize expenses due to pumps and pipes.
{{copyedit|some wording unclear/ungrammatical; a "See also" section would be great; header capitalization.}}


== Pumps ==
* {{WP|handpumps}} - A tried and true method of water pumping
* [[Rope and washer pump]] - cheaper and more efficient than a standard hand pump
* {{WP|treadle pump}} - resembles a stair stepper and is more efficient than a hand pump
* {{WP|hydraulic ram}} - use the kinetic energy in a stream to pump a small percentage of the water to a higher level.
* {{WP|roundabout playpump}} - Uses the kinetic energy of children to pump water
* {{WP|solar-powered pumps}} - Typically cost prohibitive. The water is simply pumped whenever the sun shines.


The principle of  {{WP|Village Level Operation and Maintenance}} is important with pumps to ensure their continued operation, but may be difficult in application.
[[Category:Water and sanitation for developing countries]]
[[Category:Water supply]]

Revision as of 18:31, 8 September 2011

Jargon

  • Suspended solidsW - Fine particles of dirt and clay found in water. These particles are detrimental to the treatment process because their presence limits the efficacy of chlorine.
  • Biochemical oxygen demandW - a measure of the organic pollution in the water.

Source Selection

When choosing a water source, quantity and quality should be evaluated. For instance, surface waters are frequently and easily accessible but are also more prone to containing pathogens and suspended solids. It is also important to keep in mind that a larger quantity of acceptable water is preferable to a tiny quantity of pure water.

Some sources of water are as follows:

  • Rainwater--harvesting requires an appropriate method of storage, especially in areas with significant dry seasons.
  • Tube wellsW--may be relatively expensive, but often provides high quality water requiring little to no additional treatment, and typically more proximate than surface water sources.

Any source of water must be properly tested. Simple initial tests such as those described in [Water Quality Field Testing] can be used in emergencies, but proper lab analysis should be done as soon as possible.

Wells should be elevated and located 100m from latrines, septic tanks, showers, and farm animals whenever possible. Choosing a water source close to the point of usage and at a higher elevation will minimize expenses associated with pumps and pipes.

Pumps

  • hand pump - a tried and true method of water pumping.
  • rope pump - cheaper and more efficient than a standard hand pump.
  • treadle pumpW - resembles a stair-stepper, and is more efficient than a hand pump.
  • hydraulic ram pump - uses the kinetic energy in a stream to pump a small percentage of the water to a higher level.
  • roundabout play pumpW - uses the kinetic energy of children to pump water.
  • solar-powered pumpW - typically cost prohibitive, water is simply pumped whenever the sun shines.
  • wind pump

The principle of Village Level Operation and MaintenanceW is important with pumps to ensure their continued operation, but may be difficult in application.

Points to Keep in Mind

Intake Designs

Spring boxW

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