Northwestern University (Household water insecurity)

A novel tool for the assessment of household-level water insecurity: scale refinement, validation, and manual development

PI: Sera Young
Start date: 5 December 2016
Duration: 24 months
Value: £249,854
Countries of research: Bangladesh, Brazil, Guatemala, Kenya, Nepal, Tajikistan

Project summary

Household food insecurity has emerged as a powerful predictor of a range of poor nutrition and health oucomes. Household water insecurity, i.e. reliable access to water in sufficient quantity and quality, may be equally or more powerfully predictive of adverse health outcomes as food insecurity has been. Yet strikingly, the role of household water insecurity has been almost entirely overlooked. In fact, because there is currently no validated scale for assessing household water insecurity (HHWI) across various cultural and ecological settings, it has not been possible to measure HHWI, understand its determinants, compare levels across settings, or understand how HHWI impacts agricultural, nutrition, and health.

This project therefore works to develop such a scale collaboratively, with institutions in the United States and 6 LMICs. Our team of investigators have expertise spanning agriculture, nutrition, anthropology, medicine, epidemiology, and behavioral sciences. Our central hypothesis is that HHWI negatively impacts nutritional status, in ways distinct from food insecurity. It aims to explore a variety of pathways by which this may occur, including decreased agricultural production, financial and opportunity costs, time and energy expenditure, and anxiety and stress

This hypothesis will be tested via three rigorous, but achievable objectives. First, a preliminary HHWI scale from the PI’s ongoing pregnancy cohort in Kenya will be refined (Objective 1). It will then be applied within the context of a multi-sectoral agricultural intervention in western Kenya, to test if HHWI impacts agricultural output or nutritional status (Objective 2). Finally, guidelines for the adaptation and validation of the HHWI will be codified in an online, open access manual, which will be used to facilitate the measurement of HHWI globally. This manual will then be implemented in Bangladesh, Brazil, Guatemala, Nepal, and Tajikistan (Objective 3).

This research is innovative for its use of cutting-edge mixed methods to develop a novel, cross-culturally appropriate HHWI scale, and because it will generate novel data to test hypotheses about the pathways by which HHWI may impact health. It is of major development relevance because a) water scarcity is a widespread and growing problem, b) women bear the burden of water acquisition and use globally, yet the quantification of their burden has not been rigorously undertaken; c) women’s abilities to acquire water are particularly constrained during pregnancy and lactation (when insufficient water can have long-term consequences for the infant); and d) there are a number of highly plausible and serious agricultural, economic, nutrition, infectious disease, and psychological consequences of household water insecurity that have not been characterized.

Further, there are a number of policy and programmatic implications of this metric: A better understanding of how household water insecurity is deleterious should point to new intervention strategies. Further, it will become possible to direct limited resources to targeting the causes of water insecurity, the most harmful sequelae, and the populations at greatest risk of adverse effects. Finally, this research will further the long-term goal of understanding how water links agriculture and food systems to human health and nutrition.