Table 1. Measures of water insecurity employed in this study.

Water security: "reliable access to adequate, safe water for an active lifestyle"
	Measures
Access	Time required to walk from home to source
	Time waiting in line at source
Adequacy	Worry over adequacy of water supply
	Reduction in amount of water used for various purposes
	Going all day without drinking
	Going to bed thirsty
Safety	Type of source used for drinking water (protected vs unprotected)
	Using an undesirable / dirty source
	Perception of having drunk dirty water
Lifestyle	Opportunity costs of water collection
	e.g. foregoing communal activities in order to collect water

Note: Items in italics (coded as present / absent) were included in the water insecurity questionnaire (see S1 Appendix, for full list of items in the Water Insecurity questionnaire). Non-italic items (coded as categorical or continuous measures) were collected during structured household interviews.