Sierra Leone vs Tanzania: Share of population not using improved drinking water sources

Sierra Leone

24.4%

in 2024

Tanzania

22.6%

in 2024

Sierra Leone rank

11th

Tanzania rank

14th

Share of population not using improved drinking water sources over time

Sierra Leone
Tanzania

How they compare

Sierra Leone currently reports 24.4% against 22.6% in Tanzania, a difference of 1.9%.

That makes Sierra Leone's figure about 1.1 times Tanzania's.

The two have swapped places 1 time across 25 shared years of data; in 2000 it was Tanzania ahead.

Sierra Leone ranks 11th and Tanzania ranks 14th of 231 countries.

Individual pages

About this data

Indicator: Share of population not using improved drinking water sources
Unit: %
Source: WHO/UNICEF Joint Monitoring Programme for Water Supply, Sanitation and Hygiene (2025) – processed by Our World in Data
Licence: CC BY 4.0 (Our World in Data)
Coverage: 231 places, 5,586 data points, 2000–2024
Last refreshed: 07 August 2026

Proportion of people not using improved drinking water sources. These people might use surface water sources or unprotected springs or wells, as no safe and reliable improved drinking water source is available to them.