Fig. 4From: Households with unimproved water sources in Ethiopia: spatial variation and point-of-use treatment based on 2016 Demographic and Health SurveyNumbers and percentages of clusters categorized by the spatially smoothed coverage rates of unimproved water. The percentage of clusters with 0-20% of unimproved water coverage declined, while the percentage of clusters with 60-80% rise in the first four quintiles after the spatial smoothing processBack to article page