Drinking water service usage in Tonga
Tonga: Drinking water service usage was 29.6% in 2024. ▬ Flat
Drinking water service usage in Tonga, 2000–2024
Source: WHO/UNICEF Joint Monitoring Programme for Water Supply, Sanitation and Hygiene (2025) – processed by Our World in Data. Measured in %.
Analysis
The most recent figure for drinking water service usage in Tonga is 29.6%, measured in 2024. That is the highest value across all 25 years on record.
The figure is up 0.4% over ten years.
Over the whole period, drinking water service usage in Tonga peaked at 29.6% in 2024 and was at its lowest, 29.2%, in 2000.
Tonga ranks 144th of 163 countries on this measure, in the bottom quarter.
Drinking water service usage in Tonga, year by year
| Year | % | Change |
|---|---|---|
| 2000 | 29.2% | — |
| 2001 | 29.2% | +0.0% |
| 2002 | 29.2% | +0.0% |
| 2003 | 29.2% | +0.0% |
| 2004 | 29.3% | +0.0% |
| 2005 | 29.3% | +0.1% |
| 2006 | 29.3% | +0.1% |
| 2007 | 29.3% | +0.1% |
| 2008 | 29.4% | +0.1% |
| 2009 | 29.4% | +0.1% |
| 2010 | 29.4% | +0.1% |
| 2011 | 29.5% | +0.1% |
| 2012 | 29.5% | +0.0% |
| 2013 | 29.5% | +0.0% |
| 2014 | 29.5% | +0.0% |
| 2015 | 29.5% | +0.0% |
| 2016 | 29.5% | +0.0% |
| 2017 | 29.5% | +0.0% |
| 2018 | 29.5% | +0.0% |
| 2019 | 29.5% | +0.0% |
| 2020 | 29.5% | +0.0% |
| 2021 | 29.5% | +0.1% |
| 2022 | 29.6% | +0.1% |
| 2023 | 29.6% | +0.1% |
| 2024 | 29.6% | +0.0% |
Tonga compared with similar countries
- Tonga's 29.6% is below the median for upper middle income countries, which is 69.0%, 43% of the median. (39 countries reporting)
- Tonga's 29.6% is below the median for East Asia & Pacific, which is 64.6%, 46% of the median. (28 countries reporting)
Averages by decade
| Decade | Average | Lowest | Highest | Years |
|---|---|---|---|---|
| 2000s | 29.3% | 29.2% | 29.4% | 10 |
| 2010s | 29.5% | 29.4% | 29.5% | 10 |
| 2020s | 29.6% | 29.5% | 29.6% | 5 |
Countries ranked near Tonga
More environment data for Tonga
- Standard Deviation, annual growth rate 0 % change on previous year (2025)
- Standard Deviation 0.234 °C (2025)
- Temperature change 0.858 °C (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 0.1689 % 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)
Frequently asked questions
- What is drinking water service usage in Tonga?
- Drinking water service usage in Tonga was 29.6% 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 drinking water service usage recorded in Tonga?
- The highest recorded value was 29.6% in 2024.
- What is the lowest drinking water service usage recorded in Tonga?
- The lowest recorded value was 29.2% in 2000.
- How does Tonga rank for drinking water service usage?
- Tonga ranks 144th out of 163 countries with data for 2024.
- Is drinking water service usage rising or falling in Tonga?
- Over the last ten years it is up 0.4%. The long-run trend across the full record is flat.
- Where does this Tonga 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 Drinking water service usage. 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 using an improved drinking water source that is located on premises, available when needed and free from fecal and priority chemical contamination.