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Cash water expenditures are associated with household water insecurity, food insecurity, and perceived stress in study sites across 20 low- and middle-income countries

Authors: Justin Stoler*, University of Miami, Amber L Pearson, Michigan State University, Chad Staddon, University of the West of England, Amber Wutich, Arizona State University, Elizabeth Mack, Michigan State University, Alexandra Brewis, Arizona State University, Asher Y Rosinger, Pennsylvania State University, HWISE RCN, (multi-institution)
Topics: Water Resources and Hydrology, Medical and Health Geography, Development
Keywords: water insecurity, water economics, food insecurity, global south, perceived stress, mental health
Session Type: Paper
Day: 4/7/2020
Start / End Time: 11:50 AM / 1:05 PM
Room: Virtual Track 3
Presentation File: No File Uploaded

Billions of people globally, living with various degrees of water insecurity, obtain their household and drinking water from diverse sources that can absorb a disproportionate amount of a household’s income. In theory, there are income and expenditure thresholds required for a household to effectively mitigate water insecure conditions, but there is little empirical research about these mechanisms in the global south. This study used data from 3,655 households from 23 water-insecure sites in 20 low- and middle-income countries to explore the relationship between cash water expenditures (measured as a Z-score, percent of income, and Z-score of percent of income) and a household water insecurity score, and whether income moderated that relationship. We also assessed whether water expenditures moderated the relationships between water insecurity and both food insecurity and perceived stress. Using tobit mixed effects regression models, we observed a positive association between multiple measures of water expenditures and a household water insecurity score, controlling for demographic characteristics and accounting for clustering within neighborhoods and study sites. The positive relationships between water expenditures and water insecurity persisted even when adjusted for income, while income was independently negatively associated with water insecurity. Water expenditures were also positively associated with food insecurity and perceived stress. These results underscore the complex relationships between water insecurity, food insecurity, and perceived stress and suggest that water infrastructure interventions that increase water costs to households without anti-poverty and income generation interventions will likely exacerbate experiences of household water insecurity, especially for the lowest-income households.

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