  
<prompt> Water and Sanitation | Percent of households | (Improved source of drinking water, Urban Mainland, 89) (Improved sanitation facility, Urban Mainland, 26) (Improved source of drinking water, Rural Mainland, 47) (Improved sanitation facility, Rural Mainland, 7) (Improved source of drinking water, Zanzibar, 97) (Improved sanitation facility, Zanzibar, 60) (Improved source of drinking water, Total, 59) (Improved sanitation facility, Total, 13) <response> The most common improved source of drinking water is a higher in rural Mainland (51%) and a higher in urban Mainland (51%)  