Updated on December 29, 2023

·

Created on June 3, 2014

LifeStraw Family 1.0

A family-sized household water filtration unit.

Developed By
  1. Vestergaard
Tested By
  • Delhi Test House (India)
  • Intertek Labs
  • London School of Hygiene & Tropical Medicine (LSHTM)
  • Ministry of Water Resources Lab (Ethiopia)
  • Rwanda Standards Board (RSB)
  • Umgeni WaterAmanzi
  • Universidad de Antioquia (Colombia)
  • University of Arizona
  • Vestergaard
  • Water Research Institute, Ghana
Content Partners
Unknown

Author

Product Description

LifeStraw® Family 1.0 is a high-volume, point-of-use water purifier for use in homes without access to clean water from municipal sources. It helps prevent often deadly waterborne diseases for families in developing countries and is effective in emergency settings following natural disasters which can contaminate water.

Target SDGs

SDG 6: Clean Water and Sanitation

SDG 3: Good Health and Well-Being

Market Suggested Retail Price

$74.94

Target Users (Target Impact Group)

Household

Distributors / Implementing Organizations

Vestergaard-Frandsen with partners such as The Carter Center, Malaria no More, Roll Back malaria, United Nations Foundation and World Vision. The LifeStraw Family 1.0 filter can also be purchased under the name "LifeStraw Family" from LifeStraw, Amazon, and other distributors.

Manufacturing/Building Method

Mass produced.Interview with representative

Intellectural Property Type

Patent

User Provision Model

Users can get the product via distributors during community distribution roll outs in targeted areas. Interview with representative Product is also available for purchase online from Amazon, Lifestraw, and Walmart.

Distributions to Date Status

In 2011, 877,500 LifeStraw Family 1.0 water filters were distributed in Kenya to provide sustainable access to safe drinking water for 4.5 million people. Other filters have been sold or distributed through partnering NGOs and retailers, as well as purchased directly from LifeStraw.

Target use case

Family use

Manufacturer-specified flow rate (L/hr)

8.8 L/hr

Bacteria reduction

> 6 log

Type of membrane filtration

Ultrafiltration

Virus reduction

> 5 log

Protozoa reduction

> 4 log

Heavy metals and/or arsenic reduction

Unknown

Maximum recommended influent turbidity level (NTU)

Unknown

Effluent turbidity levels (NTU)

< 0.5

Material of construction

Plastics, rubber and ultra-fine mesh textile filters that are US Food and Drug Administration compliant or equivalent.

Safe water storage capacity (L)

None

Manufacturer-specified lifetime volume (L)

18,000 L

Design Specifications

The LifeStraw Family 1.0 filter is the same as all LifeStraw filters, which achieves ultrafiltration via hollow fiber technology whereby water is forced through narrow fibers under high pressure. 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 down the plastic hose towards the purification cartridge. The purification cartridge, which contains a hollow-fiber membrane of 20nm porosity, stops all particles larger than 20nm and bacteria, protozoa, and other contaminants are trapped inside the hollow fibers and are flushed out by backwashing.

Product Schematics

Technical Support

For the pilot project in Kenya, LifeStraw Family units are monitored by trained community representatives employed by Vestergaard. LifeStraw users must be trained on the operation and maintenance of the units. Representatives conduct visits to homes to analyze and report on units that are not operating normally. Interview with representative Customer support offices are available to help all LifeStraw filter users.

Replacement Components

For the pilot project in Kenya, replacement systems are available if community representatives determine that the unit is faulty. All units are tracked via QR codes by representatives. The LifeStraw Family 1.0 filter is designed not to need replacement components. Interview with representative

Lifecycle

Guaranteed up to 18,000 Liters (4,750 Gallons). According to Vestergaard, enough to supply clean drinking water for a family of five for up to 3 years.

Manufacturer Specified Performance Parameters

Manufacturer specifies the following: removes minimum 99.9999% of bacteria (>Log 6 reduction), 99.99% of viruses (>Log 4 reduction) and 99.9% of protozoan cysts (>Log 3 reduction), removes turbidity, does not require electrical power, does not require batteries, does not require replacement parts, does not require running water, does not require piped-in water supply, has an easy-to-clean pre filter, has an easy-to-clean purification cartridge, and all raw materials are US Food and Drug Administration compliant or equivalent.

Vetted Performance Status

A number of laboratory studies and health impact and field studies have been carried out:A laboratory assessment of a gravity-fed ultrafiltration water treatment device designed for household use in low-income settings was funded by Vestergaard Fransen, and ran by London School of Hygiene and Tropical Medicine, and University of Arizona. It is the independent laboratory that tested and produced these results via EPA Protocol and Guide Standard for Testing Microbiological Water Purifiers. It is part of LifeStraw Family Evidence Dossier (available by request)LifeStraw® Family Quality Inspection is completed by Intertek in Vietnam."Assessment of the LifeStraw Family Unit using the World Health Organization Guidelines for "Evaluating Household Water Treatment Options: Health-based Targets and Performance Specifications", 2011. by the University of Arizona Department of Soil, Water and Environmental Science. Authors: Jaime Naranjo, B. S. and Charles P. Gerba, Ph.D.Rotavirus Reduction by LifeStraw Family 1.0 Filters, 2013 by the University of Arizona Department of Soil, Water and Environmental Science. Authors: Jaime Naranjo, B. S. and Charles P. Gerba, Ph.D.Confirmation of 20 nanometer pore size by Para Membranes Co. Ltd, Korea

Safety

Contamination of filtered water is possible with exposed/improper handling and storage.

Complementary Technical Systems

A container is needed to collect the filtered water.

Academic Research and References

Perron, S., 2012, “Microbial Regrowth in Drinking Water Treated with Gravity-Driven Ultrafiltration A Field Study in Kenya,” M.S. thesis, Department of Earth Sciences, Air, Water and Landscape Science, Uppsala University Villavägen.

Clasen, T., Naranjo, J., Frauchiger, D., Gerba, C., 2009, “Laboratory assessment of a gravity-fed ultrafiltration water treatment device designed for household use in low-income settings,” Am J Trop Med Hyg, 80(5), pp. 819-23.

Pérez-Vidal, A., Díaz-Gómez, J., Salamanca-Rojas, K. L., y Rojas Torres, L. Y., 2016, “Evaluation of drinking-water treatment by Lifestraw® and Ceramic-pot filters,” Revista de Salud Pública, 18(2), pp. 275–289.

Elsanousi, S., Abdelrahman, S., Elshiekh, I., Elhadi, M., Mohamadani, A., Habour, A., ElAmin, S., ElNoury, A., Ahmed, E., and Hunter, P. R., 2009, “A study of the use and impacts of LifeStraw™ in a settlement camp in southern Gezira, Sudan,” Journal of Water and Health, 7(3), pp. 478–483.

Redfield, P., 2015, “Fluid technologies: The Bush Pump, the LifeStraw® and microworlds of humanitarian design,” Social Studies of Science, 46(2), pp. 159–183.

T. Clasen, J. Naranjo, D. Frauchiger, and C. Gerba, “Laboratory assessment of a gravity-fed ultrafiltration water treatment device designed for household use in low-income settings,” Am. J. Trop. Med. Hyg., vol. 80, no. 5, pp. 819–823, 2009.

“LifeStraw Family,” LifeStraw Water Filters & Purifiers. Available: https://lifestraw.com/products/lifestraw-family-emergency-water-filter

Vestergaard, “Homepage,” Vestergaard, 03-Dec-2020. Available: https://vestergaard.com/

“The Carter Center,” The Carter Center. Available: https://www.cartercenter.org/

“Home,” Malaria No More. Available: https://www.malarianomore.org/

“Log in,” Endmalaria.org. Available: https://endmalaria.org/about-us/overview

“About World Vision,” Wvi.org. Available: https://www.wvi.org/

LifeStraw Family 1.0 Portable Gravity Powered Water Purifier for Emergency Preparedness and Camping. Available: https://www.amazon.com/LifeStraw-Portable-Purifier-Emergency-Preparedness/dp/B00FM9OBQS?th=1

“ZeeWeed Hollow-Fiber Membranes,” Watertechnologies.com. Available: https://www.watertechnologies.com/products/zeeweed-ultrafiltration

“Competition,” Tata Swach Water Purifier. Available: https://tataswach.com/

“ceramic and candle Filters – Pureit Water India,” Pureitwater.com. Available: https://www.pureitwater.com/

P. By, “General assembly event sustainability report Kansas City, Missouri 2018,” Uua.org. Available: https://www.uua.org/files/pdf/u/uua-ga-2018-sustainability-report.pdf

Pritpalkalsi, “e Brochure Lifestraw and Lifestraw Family English,” dokumen.tips. Available: https://dokumen.tips/documents/e-brochure-lifestraw-and-lifestraw-family-english.html?page=3

Office of the Commissioner, “U.S. Food and Drug Administration,” U.S. Food and Drug Administration, 16-Oct-2023. Available: https://www.fda.gov/home

Chemical disinfection, “Of the WHO international scheme to evaluate household water treatment technologies,” Who.int. Available: https://iris.who.int/bitstream/handle/10665/204284/9789241509947_eng.pdf?sequence=1

“Crowdrise +,” GoFundMe, 18-Feb-2022. Available: https://www.gofundme.com/c/crowdrise

 

Compliance with regulations

Complies with the US Environmental Protection Agency (EPA) 1987 Guide Standard and Protocol for Testing Microbiological Water Purifiers , US Food and Drug Administration, and meets 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."

Evaluation methods

The product has been evaluated for microbiological and turbidity removal, proper function, and membrane pore size by third-party laboratories. Health impact and field studies have also been performed.

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