Chlorinating water to provide residual disinfection is a strategy to reduce recontamination of treated water. However, individual users’ practice of chlorinating water at the household level often is inadequate and establishing the necessary level of compliance has been found to be difficult. The installation of a passive chlorinator at the point of collection could circumvent the need to establish user compliance and can potentially increase the proportion of chlorinated water provided to the consumer. Therewith the risk that contaminated water is consumed could be reduced.
In this project we are collaborating with the local communities and the NGOs Get Water Uganda, Helvetas Swiss Intercooperation in Nepal and Sandec’s Water Supply and Treatment Goup to assess:
a) the technical performance of different low-cost designs of non-electrically powered system-level chlorinators (dosing consistency, product durability, O&M requirements, water quality),
b) business model aspects (initial and recurring cost, revenue generation models involving different stakeholders, management approaches, availability of products and spare parts)
c) user perspective ( acceptability, taste perception and williness to pay for additional cost)
d) comparing the impact of system-level passive chlorination versus the promotion of household water treatment on drinking water quality at the point of consumption and on child health