Share of population not using improved drinking water sources in Tanzania
Tanzania: Share of population not using improved drinking water sources was 22.6% in 2024. ▼ Falling
Share of population not using improved drinking water sources in Tanzania, 2000–2024
Source: WHO/UNICEF Joint Monitoring Programme for Water Supply, Sanitation and Hygiene (2025) – processed by Our World in Data. Measured in %.
Analysis
In 2024, share of population not using improved drinking water sources in Tanzania stood at 22.6%. That is the lowest value across all 25 years on record.
That represents a change of down 6.7% on the previous year and down 42.5% over ten years.
Over the whole period, share of population not using improved drinking water sources in Tanzania peaked at 63.6% in 2000 and was at its lowest, 22.6%, in 2024.
Tanzania ranks 14th of 231 countries on this measure, in the top 10%.
The long-run direction has been consistently falling across the 25 years of available data.
Averages by decade
| Decade | Average | Lowest | Highest | Years |
|---|---|---|---|---|
| 2000s | 55.8% | 47.9% | 63.6% | 10 |
| 2010s | 38.4% | 30.8% | 46.1% | 10 |
| 2020s | 25.8% | 22.6% | 29.1% | 5 |
Countries ranked near Tanzania
- 11 Sierra Leone 24.4% compare
- 12 Guinea-Bissau 23.3% compare
- 13 Benin 23.0% compare
- 15 South Sudan 22.4% compare
- 16 Solomon Islands 22.2% compare
- 17 Angola 20.9% compare
More environment data for Tanzania
- Total greenhouse gas emissions excluding LULUCF 102.53 Mt CO2e (2024)
- Total greenhouse gas emissions excluding LULUCF per capita 1.5 t CO2e/capita (2024)
- Methane (CH4) emissions from Agriculture 43.66 Mt CO2e (2024)
- Methane (CH4) emissions from Building (Energy) 5.56 Mt CO2e (2024)
- Methane (CH4) emissions from Fugitive Emissions (Energy) 6.87 Mt CO2e (2024)
- Methane (CH4) emissions from Industrial Combustion (Energy) 0.0551 Mt CO2e (2024)
- Methane (CH4) emissions (total) excluding LULUCF 59.72 Mt CO2e (2024)
- Methane (CH4) emissions from Power Industry (Energy) 0.0064 Mt CO2e (2024)
- Methane (CH4) emissions from Transport (Energy) 0.0605 Mt CO2e (2024)
- Methane (CH4) emissions from Waste 3.51 Mt CO2e (2024)
Frequently asked questions
- What is share of population not using improved drinking water sources in Tanzania?
- Share of population not using improved drinking water sources in Tanzania was 22.6% in 2024, according to WHO/UNICEF Joint Monitoring Programme for Water Supply, Sanitation and Hygiene (2025) – processed by Our World in Data.
- What is the highest share of population not using improved drinking water sources recorded in Tanzania?
- The highest recorded value was 63.6% in 2000.
- What is the lowest share of population not using improved drinking water sources recorded in Tanzania?
- The lowest recorded value was 22.6% in 2024.
- How does Tanzania rank for share of population not using improved drinking water sources?
- Tanzania ranks 14th out of 231 countries with data for 2024.
- Is share of population not using improved drinking water sources rising or falling in Tanzania?
- Over the last ten years it is down 42.5%. The long-run trend across the full record is falling.
- Where does this Tanzania data come from?
- The figures come from WHO/UNICEF Joint Monitoring Programme for Water Supply, Sanitation and Hygiene (2025) – processed by Our World in Data, published as part of Share of population not using improved drinking water sources. Statizoid updates them automatically from the source API.
Download this data
CSV · JSON — 25 observations, free to reuse under CC BY 4.0 (Our World in Data).
About this data
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.