Revision history [back]
HHWT technologies may work in the lab (and hence testing is a vital step) but the big issue is sustainable operation. The socio-economic aspect is just (more?) as important. The literature now seems to advise focusing on smaller groups of people to ensure a higher level of use. Involve them in the selection of the technology.
Consider community treatment (e.g. bucket chlorination) rather than household if you are concerned about cholera.