Proportion of population using safely managed drinking water services is currently measured as the proportion of the population using an improved basic drinking water source located on the premises, available when needed and free of faecal (and priority chemical) contamination. Improved drinking water sources include: piped water into the dwelling, yard or plot; public taps or standpipes; boreholes or tube wells; protected dug wells; protected springs; packaged water; delivered water and rainwater.;

UN Indicator ;

https://unstats.un.org/sdgs/metadata/files/Metadata-06-01-01.pdf;

INSTAT, Household Budget Survey;