Evaluating self-reported measures and alternatives to monitor access to drinking water: A case study in Malawi

Monitoring access to drinking water is complex, especially in settings where on premises water supply is not available. Although self-reported data are generally used to estimate coverage of access to drinking water, the relationship between self-reported time travelled and true time travelled is not well known in the context of water fetching. Further, water fetching is likely to impact the quantity and quality of water a household uses, but data and measures supporting this relationship are not well documented. The objective of this study was to appraise the validity and reliability of self-reported measurements used to estimate access coverage. A case study was conducted in Malawi to enhance understanding of the self-reported measures and alternatives available to assess and monitor access to drinking water in view of generating global estimates. Self-reported data were compared with objective observations and direct measurements of water quantity, quality and accessibility. Findings from this study highlight the variations between different measures such as self-reported and recorded collection time and raise awareness with regard to the use of self-reported data in the context of fetching water. Alternatives to self-reported indicators such as GPS-based or direct observations could be considered in surveys in view of improving data accuracy and global estimates. (C) 2020 Elsevier B.V. All rights reserved.

Automated summary

This study aimed to assess the validity and reliability of self-reported data used to estimate access coverage of drinking water. Through comparing self-reported data with objective observations and direct measurements, variations between different measures were highlighted, raising awareness on the use of self-reported data and suggesting alternatives to improve data accuracy and global estimates.