This study aims to assess households’ choices regarding safe drinking water and water treatment technology in the context of arsenic (As) contamination in the Vietnamese Mekong Delta. Based on the Protection Motivation Theory, a predictive model of As-poison-related health protective behavior was designed via a cognitive mediating process with threat and coping appraisals of intention action choice in safe drinking water by household. Five factors affected a household’s decision to use As treatment technology: educational status, duration of residence, family size As knowledge, and ethnicity. At a discount rate of 3% and timeline of 10 years, costs per disability-adjusted life years avoided saved by using sand filter and treatment equipment were USD 1.29 and USD 1.13, respectively. Thus, using treatment equipment method is the best choice for preventing As-related diseases. Household preferences regarding water treatment methods are differing depending on what criteria are given top priority. To improve safe water use in arsenic-contaminated areas, the study recommends launching a public awareness campaign, accelerating existing rural pipe water program, promoting safe water treatment, providing the public with updated and accurate information on the state of As contamination, and seeking additional safe water sources such as rainwater and treated groundwater.
Drinking Water Options in the Context of Arsenic Contamination in the Vietnamese Mekong Delta