Nigeria vs Tonga: Share using safely managed drinking water

Nigeria

29.9%

in 2024

Tonga

29.6%

in 2024

Nigeria rank

143rd

Tonga rank

144th

Share using safely managed drinking water over time

Nigeria
Tonga

How they compare

Nigeria currently reports 29.9% against 29.6% in Tonga, a difference of 0.3%.

The two have swapped places 1 time across 25 shared years of data; in 2000 it was Tonga ahead.

Nigeria ranks 143rd and Tonga ranks 144th of 163 countries.

Individual pages

Share using safely managed drinking water in Nigeria
Share using safely managed drinking water in Tonga
Full country ranking

About this data

Indicator: Share using safely managed drinking water
Unit: %
Source: WHO/UNICEF Joint Monitoring Programme for Water Supply, Sanitation and Hygiene (2025) – processed by Our World in Data
Licence: CC BY 4.0 (Our World in Data)
Coverage: 163 places, 3,991 data points, 2000–2024
Last refreshed: 07 August 2026

Proportion of people using an improved drinking water source that is located on premises, available when needed and free from faecal and priority chemical contamination.