LifeStraw Family 2.0
A family-sized household water filtration unit.
Worldwide, however, Vestergaard Frandsen and Del Agua Health Limited targeted Rwanda for the LifeStraw® Family 2.0 purifiers.
Lifesaver® Jerrycan 20000UF, LifeSaver Cube, VF 100 Village Bucket Filter, ACI Household Filter, LifeWell Water Filter, WateROAM ROAMfilter Plus, WateROAM ROAMfilter Lite, TATA Swach Cristella Plus Water Purifier, TATA Swach Smart, EAWAG System, AquaFilter Family. Sawyer Water Filters, SRI Advanced Hollow Fiber Membrane for Water Purification, Mar Cor’s FiberFlo Hollow Fiber Filters, GE’s ZeeWeed ultrafiltration (UF) hollow-fiber membranes
Goal 6: Clean water and sanitation
Trademarked; LifeStraw® Family 2.0 water filter is a registered product of Vestergaard Frandsen.
LifeStraw® Family 2.0 is being piloted by Del Agua Health Limited in western Rwanda and is also available through an online retailer in Australia. It can also be purchased on other websites such as NZ survivor, Underaman, Adventure Gears, Outdoor Ware House and Amazon (although currently unavailable).
In July 2012, DelAgua piloted & distributed 100+ Vestergaard-Frandsen LifeStraw® Family 2.0 water filters in the Western Province of Rwanda. By end of 2019, the LifeStraw Give Back Program will have reached 1870 schools, 3,367,145 sudents with 1 year of safe water and 12,220 filters delivered.
Is this filter designed for individual, household, or community use?
Manufacturer-specified flow rate (L/hr)
Laboratory-evaluated log scale removal rate of bacteria
Does the system use microfiltration, ultrafiltration, nanofiltration, or reverse osmosis?
Laboratory-evaluated log scale removal rate of viruses
Laboratory-evaluated log scale removal rate of protozoa
Reduction levels of heavy metals and/or arsenic through this treatment system
Manufacturer-specified maximum level of inlet turbidity (NTU)
Range or value of outlet turbidity levels (NTU)
Description of materials of construction
Is there safe water storage integrated into this product?
What is the total number of liters that is recommended can be filtered?
LifeStraw Family 2.0 achieves ultrafiltration via hollow fiber technology whereby water is gravity fed through narrow fibers. When untreated water is poured into the feed water bucket, the textile prefilter removes coarse particles larger than 80µm. Gravity pushes the water with particles finer than 80µm to flow towards the membrane cartridge. Ultra filtration takes place in the membrane cartridge – a pore size of 20 nanometre retains bacteria, viruses, parasites and fine dirt particles. Filtered water collects in the safe storage tank, which has a capacity of 5 liters and includes a tap to provide an outlet for purified water. The storage tank can be opened for cleaning. Backwashing of the membranes is done by pressing down on the cleaning lever. Dirty water flows to the small red tank. The dirty water should then be discarded.
Community Health workers and the Del Agua Country Team provide technical support for Lifestraw® Family 2.0. Minimal training and assembly is required by the customer/user.
Vestergaard Frandsen provides local and international customer service through its 11 regional customer support offices across Africa, Asia, Europe and the Americas.
No replacement components are stated as being necessary. Schematic does refer to an ‘ultrafiltration membrane cartridge’ but no replacement requirement of this is mentioned elsewhere.
LifeStraw® Family 2.0 water filters up to 30,000 L of water , enough to supply a family of five with clean drinking water for three to five years.
Estimated lifetime filtration capacity of 30,000 liters, removal of 99.9999% bacteria, 99.99% protozoan parasites, 99.999% viruses, turbidity reduction, and no electricity requirement.
Lifestraw® Community purifiers use LifeStraw® Family ultrafiltration technology, which:
- Satisfies the criteria of the “Highly Protective” category for microbiological performance specifications as defined in WHO’s 2011 Evaluating Household Water Treatment Options: Health-based targets and microbiological performance options
- Complies with the US Environmental Protection Agency (EPA) 1987 Guide Standard and Protocol for Testing Microbiological Water Purifiers
Also an evaluation and adoption of health impact of the filters was carried out by by the London School of Hygiene and Tropical Medicine
For the Lifestraw Evidence Dossier see here.
Vestergaard Frandsen have tested Lifestraw® products via labs at Intertek, Vietnam, The University of Arizona Department of Soil, Water and Environmental Science. Para Membranes Co. Ltd, Korea, Department of Infectious and Tropical Diseases, London School of Hygiene and Tropical Medicine, London. For the Lifestraw Evidence Dossier see here.
Users must be cautious with avoiding cross contamination of the clean water container and not consume water from backflush.
Lifestraw® Family 2.0 filters work best with a table mount or other raised surface.
Barstow, C.K., et al., 2014, Designing and Piloting a Program to Provide Water Filters and Improved Cookstoves in Rwanda, PLoS ONE, 9(3). doi:10.1371/journal.pone.0092403
Thomas, E. A., et al., 2013, Remotely Accessible Instrumented Monitoring of Global Development Programs: Technology Development and Validation, Sustainability, 5(8), pp.3288-3330, doi: https://doi.org/10.3390/su5083288
Barstow, C.K., Nagel, C. L., Clasen, T. F., and Thomas, E. A., 2016, Process evaluation and assessment of use of a large scale water filter and cookstove program in Rwanda, BMC Public Health, 16(584), Doi:10.1186/s12889-016-3237-0.
Tellez-Sanchez, S. L., 2016, Household Water Filter Use Characterization in Rural Rwanda: Signal Interpretation, Development and Validation, Ms. Dissertation, Portland State University, Portland, OR.
Lifestraw® Family 2.0 filters successfully passed Intertek Quality Inspection and complies with the USEPA protocol of Exceeded the requirements for a “Highly Protective” water treatment device as defined by the World Health Organization. UN’s Clean Development Mechanism.
Parent company DelAgua utilises mobile data collection and a central database for programme implementation, analysis and record keeping. All distributions, education and evaluation activities are conducted through smart-phone based database tools. The project falls under the UN’s Clean Development Mechanism, with carbon credits being earned only after rigorous external monitoring of continued use of the new water filters and cookstoves and the resultant benefits.
LifeStraw® Family 2.0 utilizes the same membrane technology as LifeStraw® Family 1.0. Therefore, studies conducted on the efficacy of LifeStraw® Famly 1.0 can also be attributed to LifeStraw® Family 2.0. This product has been evaluatad for microbiological and turbidity removal, proper function, and membrane pore size by third-party laboratories.
For the Lifestraw evidence dossier see here.
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