People not using safely managed drinking water sources in Tanzania
Tanzania: People not using safely managed drinking water sources was 47.08 million people in 2024. ▲ Rising
People not using safely managed 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 people.
Analysis
Tanzania recorded 47.08 million people for people not using safely managed drinking water sources in 2024. That is the highest value across all 25 years on record.
That represents a change of up 1.9% on the previous year and up 16.3% over ten years.
Over the whole period, people not using safely managed drinking water sources in Tanzania peaked at 47.08 million people in 2024 and was at its lowest, 33.82 million people, in 2000.
Tanzania ranks 10th of 163 countries on this measure, in the top 10%.
The long-run direction has been consistently rising across the 25 years of available data.
People not using safely managed drinking water sources in Tanzania, year by year
| Year | people | Change |
|---|---|---|
| 2000 | 33.82 million people | — |
| 2001 | 34.73 million people | +2.7% |
| 2002 | 35.63 million people | +2.6% |
| 2003 | 36.57 million people | +2.6% |
| 2004 | 37.29 million people | +2.0% |
| 2005 | 38.04 million people | +2.0% |
| 2006 | 38.67 million people | +1.7% |
| 2007 | 39.11 million people | +1.1% |
| 2008 | 39.47 million people | +0.9% |
| 2009 | 39.67 million people | +0.5% |
| 2010 | 39.84 million people | +0.4% |
| 2011 | 40.05 million people | +0.5% |
| 2012 | 40.22 million people | +0.4% |
| 2013 | 40.36 million people | +0.4% |
| 2014 | 40.48 million people | +0.3% |
| 2015 | 41.08 million people | +1.5% |
| 2016 | 41.71 million people | +1.5% |
| 2017 | 42.28 million people | +1.4% |
| 2018 | 42.75 million people | +1.1% |
| 2019 | 43.10 million people | +0.8% |
| 2020 | 43.55 million people | +1.1% |
| 2021 | 44.45 million people | +2.0% |
| 2022 | 45.33 million people | +2.0% |
| 2023 | 46.21 million people | +1.9% |
| 2024 | 47.08 million people | +1.9% |
Tanzania compared with similar countries
- Tanzania's 47.08 million people is above the median for lower middle income countries, which is 7.56 million people, 6.2× the median. (31 countries reporting)
- Tanzania's 47.08 million people is above the median for Sub-Saharan Africa, which is 12.93 million people, 3.6× the median. (26 countries reporting)
Averages by decade
| Decade | Average | Lowest | Highest | Years |
|---|---|---|---|---|
| 2000s | 37.30 million people | 33.82 million people | 39.67 million people | 10 |
| 2010s | 41.19 million people | 39.84 million people | 43.10 million people | 10 |
| 2020s | 45.32 million people | 43.55 million people | 47.08 million people | 5 |
Countries ranked near Tanzania
More environment data for Tanzania
- Historical exposure to drought — Land soil moisture anomaly -7.52 Percentage change (2025)
- Historical exposure to drought — Cropland soil moisture anomaly -7.29 Percentage change (2025)
- Total greenhouse gas emissions excluding LULUCF (Mt CO2e), annual 3.06 % change on previous year (2024)
- Total greenhouse gas emissions excluding LULUCF (Mt CO2e), per unit 0 Mt CO2e per US$ of GDP (2024)
- Total greenhouse gas emissions excluding LULUCF (Mt CO2e), per capita 0 Mt CO2e per person (2024)
- Methane (CH4) emissions from Agriculture (Mt CO2e), annual growth rate 5.16 % change on previous year (2024)
- Methane (CH4) emissions from Agriculture (Mt CO2e), per unit of GDP 0 Mt CO2e per US$ of GDP (2024)
- Methane (CH4) emissions from Agriculture (Mt CO2e), per capita 0 Mt CO2e per person (2024)
- Methane (CH4) emissions from Building (Energy) (Mt CO2e), annual 0 % change on previous year (2024)
- Methane (CH4) emissions from Building (Energy) (Mt CO2e), per unit of 0 Mt CO2e per US$ of GDP (2024)
Frequently asked questions
- What is people not using safely managed drinking water sources in Tanzania?
- People not using safely managed drinking water sources in Tanzania was 47.08 million people 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 people not using safely managed drinking water sources recorded in Tanzania?
- The highest recorded value was 47.08 million people in 2024.
- What is the lowest people not using safely managed drinking water sources recorded in Tanzania?
- The lowest recorded value was 33.82 million people in 2000.
- How does Tanzania rank for people not using safely managed drinking water sources?
- Tanzania ranks 10th out of 163 countries with data for 2024.
- Is people not using safely managed drinking water sources rising or falling in Tanzania?
- Over the last ten years it is up 16.3%. The long-run trend across the full record is rising.
- 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 People not using safely managed 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
People not using safely managed drinking water sources either use unimproved drinking water sources or the improved sources they use are not located on their premises, not available when needed, or not free of contamination.