People using improved drinking water sources in Tonga
Tonga: People using improved drinking water sources was 164.75 people in 2024. ▼ Falling
People using improved drinking water sources 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 people.
Analysis
The most recent figure for people using improved drinking water sources in Tonga is 164.75 people, measured in 2024. That is the lowest value across all 25 years on record.
Compared with earlier readings it is down 0.4% on the previous year and down 73.1% over ten years.
Over the whole period, people using improved drinking water sources in Tonga peaked at 1,087 people in 2004 and was at its lowest, 164.75 people, in 2024.
Tonga ranks 164th of 231 countries on this measure, in the middle of the range.
The long-run direction has been consistently falling across the 25 years of available data.
People using improved drinking water sources in Tonga, year by year
| Year | people | Change |
|---|---|---|
| 2000 | 1,061 people | — |
| 2001 | 1,068 people | +0.6% |
| 2002 | 1,074 people | +0.6% |
| 2003 | 1,081 people | +0.6% |
| 2004 | 1,087 people | +0.6% |
| 2005 | 1,045 people | -3.9% |
| 2006 | 1,002 people | -4.1% |
| 2007 | 957.82 people | -4.4% |
| 2008 | 911.5 people | -4.8% |
| 2009 | 863.96 people | -5.2% |
| 2010 | 816.28 people | -5.5% |
| 2011 | 768.14 people | -5.9% |
| 2012 | 717.5 people | -6.6% |
| 2013 | 665.02 people | -7.3% |
| 2014 | 612.46 people | -7.9% |
| 2015 | 560.17 people | -8.5% |
| 2016 | 508.17 people | -9.3% |
| 2017 | 458.52 people | -9.8% |
| 2018 | 410.6 people | -10.5% |
| 2019 | 362.19 people | -11.8% |
| 2020 | 313.54 people | -13.4% |
| 2021 | 264.25 people | -15.7% |
| 2022 | 214.67 people | -18.8% |
| 2023 | 165.46 people | -22.9% |
| 2024 | 164.75 people | -0.4% |
Averages by decade
| Decade | Average | Lowest | Highest | Years |
|---|---|---|---|---|
| 2000s | 1,015 people | 863.96 people | 1,087 people | 10 |
| 2010s | 587.91 people | 362.19 people | 816.28 people | 10 |
| 2020s | 224.53 people | 164.75 people | 313.54 people | 5 |
Countries ranked near Tonga
- 161 Guadeloupe 277.27 people compare
- 162 Sint Maarten (Dutch part) 268.61 people compare
- 163 Nauru 191.75 people compare
- 165 Falkland Islands 164.47 people compare
- 166 Saint Lucia 116.49 people compare
- 167 Saint Pierre and Miquelon 102.91 people compare
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)
- Plywood and LVL — Import quantity, annual growth rate -5.69 % change on previous year (2024)
- Plywood and LVL — Import quantity, per unit of GDP 0 m3 per US$ of GDP (2024)
- Plywood and LVL — Import quantity, per capita 0.0129 m3 per person (2024)
- Plywood and LVL — Import value, annual growth rate 34.51 % change on previous year (2024)
- Plywood and LVL — Import value, per unit of GDP 0 1000 USD per US$ of GDP (2024)
- Plywood and LVL — Import value, per capita 0.0099 1000 USD per person (2024)
- Paper and paperboard — Import quantity, annual growth rate -8.98 % change on previous year (2024)
Frequently asked questions
- What is people using improved drinking water sources in Tonga?
- People using improved drinking water sources in Tonga was 164.75 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 using improved drinking water sources recorded in Tonga?
- The highest recorded value was 1,087 people in 2004.
- What is the lowest people using improved drinking water sources recorded in Tonga?
- The lowest recorded value was 164.75 people in 2024.
- How does Tonga rank for people using improved drinking water sources?
- Tonga ranks 164th out of 231 countries with data for 2024.
- Is people using improved drinking water sources rising or falling in Tonga?
- Over the last ten years it is down 73.1%. The long-run trend across the full record is falling.
- 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 People 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
Number of people using only unimproved drinking water sources.