Household Water Treatment and Safe Storage Factsheet: Source ...

Household Water Treatment and Safe Storage
Fact Sheet: P&G Purifier of Water Key Data
Direct Cost
Capital Cost(s) Operating Cost(s) Replacement Cost
US$0
US$0.05 1 -0.10 2 /10 L
US$36.50-$73/year 3
US$0
Note: Program, transportation and education costs are not included. Costs may vary depending on location.
1 Allgood, G., personal communication, 2011, 2 Clasen (2007), 3 Assumed 20 litres/household/day
Other
Approved by the United States Environmental Protection Agency (US EPA) as a
microbiological purifier of water indicating that independent studies have demonstrated
>99.9999% removal of pathogenic bacteria, >99.99% kill of viruses, and >99.9% removal of
parasites including Giardia and Cryptosporidium.
Some users complain about the taste and odour that chlorine may cause in water. However,
the level of chlorine in Purifier of Water is lower than chlorine only products.
Lantagne et al. (2008) indicate that possibly produced carcinogenic trihalomethane (THM)
levels during typical household chlorination processes (including sodium chloride and Purifier
of Water) may fall below World Health Organization (WHO) guideline values. THM levels
after using Purifier of Water were shown to be lower than after using chlorine only.
References
Allgood, G. (2004). Evidence from the Field for the Effectiveness of Integrated Coagulation-
Flocculation-Disinfection. IWA World Water Congress 2004. Marrakech, Morocco. Workshop 33.
Clasen, T. (2007). Presentation. London School of Hygiene and Tropical Medicine.
Lantagne, D.S. et al. (2008). Disinfection by-product formation and mitigation strategies in pointof-use
chlorination of turbid and non-turbid waters in western Kenya. Journal of Water and
Health, 06.1, 67-82.
Norton, D.M et al. (2003). A Combined Flocculent-Disinfectant Point-of-Use Water Treatment
Strategy for Reducing Arsenic Exposure in Rural Bangladesh. 10th Asian Conference on
Diarrhoeal Diseases and Nutrition , Dhaka, Bangladesh.
Norton, D. M. et al. (2003). Field Trial of a Flocculent-Disinfectant Point-of-Use Water Treatment
for Improving the Quality and Microbial Safety of Surface Pond Water in Bangladesh. 10th Asian
Conference on Diarrhoeal Diseases and Nutrition Dhaka, Bangladesh.
Shaw Environmental Inc (2006). Evaluation of Grainger Challenge Arsenic Treatment Systems,
PuR System #1. Prepared for the US Environmental Protection Agency and the National
Academy of Engineering. Cincinnati, USA.
Souter et al. (2003). Evaluation of a New Water Treatment for Point-of-Use Household
Applications to Remove Microorganisms and Arsenic from Drinking Water. Journal of Water and
Health, 01.2, 73-84.
Further Information
Proctor & Gamble: www.csdw.org/csdw/pur_packet.shtml
http://news.pg.com/press-release/pg-corporate-announcements/pg-underlines-commitment-its-
childrens-safe-drinking-water-
CAWST (Centre for Affordable Water and Sanitation Technology)
Calgary, Alberta, Canada
Website: www.cawst.org, Email: cawst@cawst.org
Last Update: January 2012