Share of population not using improved sanitation facilities in Tonga
Tonga: Share of population not using improved sanitation facilities was 1.5% in 2024. ▼ Falling
Share of population not using improved sanitation facilities 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
Tonga recorded 1.5% for share of population not using improved sanitation facilities in 2024. That is the lowest value across all 25 years on record.
That represents a change of down 0.1% on the previous year and down 73.1% over ten years.
Over the whole period, share of population not using improved sanitation facilities in Tonga peaked at 10.1% in 2000 and was at its lowest, 1.5%, in 2024.
That places Tonga 118th out of 232 countries with data for 2024, putting it in the middle of the range.
The long-run direction has been consistently falling across the 25 years of available data.
Averages by decade
| Decade | Average | Lowest | Highest | Years |
|---|---|---|---|---|
| 2000s | 9.4% | 7.8% | 10.1% | 10 |
| 2010s | 5.3% | 3.3% | 7.3% | 10 |
| 2020s | 2.0% | 1.5% | 2.9% | 5 |
Countries ranked near Tonga
More reference data data for Tonga
- Universal right to vote in practice 2 (2025)
- Consumer price index 174.32 2010 = 100 (2025)
- Universal right to vote 2 (2025)
- Competitive elections 1 (2025)
- Men's universal right to vote 1 (2025)
- Elected parliament 1 (2025)
- Chief executive of the government is elected 1 (2025)
- Democracy 7 (2025)
- Civil liberties rating 2 (2025)
- Free country 2 (2025)
Frequently asked questions
- What is share of population not using improved sanitation facilities in Tonga?
- Share of population not using improved sanitation facilities in Tonga was 1.5% 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 sanitation facilities recorded in Tonga?
- The highest recorded value was 10.1% in 2000.
- What is the lowest share of population not using improved sanitation facilities recorded in Tonga?
- The lowest recorded value was 1.5% in 2024.
- How does Tonga rank for share of population not using improved sanitation facilities?
- Tonga ranks 118th out of 232 countries with data for 2024.
- Is share of population not using improved sanitation facilities 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 Share of population not using improved sanitation facilities. 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
If no improved sanitation facility is available, people might practice open defecation or use unimproved sanitation facilities.