Household Water Treatment and Safe Storage Factsheet: Source ...
Household Water Treatment and Safe Storage Factsheet: Source ...
Household Water Treatment and Safe Storage Factsheet: Source ...
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<strong>Household</strong> <strong>Water</strong> <strong>Treatment</strong> <strong>and</strong> <strong>Safe</strong> <strong>Storage</strong><br />
Product Sheet: LifeStraw ®<br />
Cost:<br />
<strong>Storage</strong>:<br />
Maintenance:<br />
<strong>Treatment</strong> Efficiency<br />
US$3-$6.50; available retail<br />
<strong>and</strong> wholesale. Not currently<br />
available on a retail basis in<br />
North America.<br />
Can be stored for three years<br />
at a maximum temperature of<br />
30 degrees. <strong>Storage</strong> at higher<br />
temperatures will results in<br />
lower treatment rates for the<br />
first few millilitres of water<br />
consumed.<br />
Regularly blow through it after<br />
drinking to keep the filters<br />
clean <strong>and</strong> to prevent clogging<br />
Backwashing by blowing<br />
(Credit: Vestergaard-Fr<strong>and</strong>sen)<br />
Bacteria Viruses Protozoa Helminths Turbidity Metals<br />
Laboratory >99.999% 1,2,3 99-99.8% 1 >99.9% 2,3 100% 4 99.6% 3 0 2<br />
Field* N/A N/A N/A N/A N/A N/A<br />
N/A: Not available<br />
1 Sobsey, no date<br />
2 www.vestergaard-fr<strong>and</strong>sen.com/lifestraw/lifestraw/faq<br />
3 Naranjo <strong>and</strong> Gerber, 2010; turbidity removal based on inlet water with turbidity of 104 NTU<br />
4 due to the pore size (0.2 m), it would be expected that helminths will be removed<br />
LifeStraw does not remove salt or chemicals such as arsenic, iron or fluoride.<br />
Inlet water criteria not specified; very turbid water should be pre-filtered or settled first. If turbid<br />
water is to be consumed, only use LifeStraw to drink from the surface (top layer) of the water.<br />
References<br />
Naranjo, J <strong>and</strong> Gerber, C.P. (2010). Laboratory Test: Evaluation of Vestergaard Fr<strong>and</strong>sen's<br />
hollow fiber LifeStraw ® for the removal of Escherichia Coli <strong>and</strong> Cryptosporidium according to the<br />
US Environmental Protection Agency guide st<strong>and</strong>ard <strong>and</strong> protocol for evaluation of<br />
microbiological water purifiers. Department of Soil, <strong>Water</strong> <strong>and</strong> Environmental Science, University<br />
of Arizona, USA. Available at: www.vestergaard-fr<strong>and</strong>sen.com/lifestraw/lifestraw/longevity-<strong>and</strong>efficacy<br />
Sobsey, M. (no date). LifeStraw ® Personal: Summary of Test Data Received from the University<br />
of North Carolina, USA.<br />
Vestergaard-Fr<strong>and</strong>sen (no date). Lifestraw ® . <strong>Safe</strong> drinking water interventions for home <strong>and</strong><br />
outside use. Verstergaard Fr<strong>and</strong>sen Group S.A., Switzerl<strong>and</strong>. Available at: www.lifestraw.com
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