Nigeria vs Tanzania: Drinking water services

Nigeria

8.79 million people

in 2024

Tanzania

7.51 million people

in 2024

Nigeria rank

2nd

Tanzania rank

4th

Drinking water services over time

Nigeria currently reports 8.79 million people against 7.51 million people in Tanzania, a difference of 1.28 million people.

That makes Nigeria's figure about 1.2 times Tanzania's.

Across all 25 years both countries report, Nigeria has been ahead every year.

Nigeria ranks 2nd and Tanzania ranks 4th of 231 countries.

Indicator: Drinking water services
Unit: people
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: 231 places, 5,429 data points, 2000–2024
Last refreshed: 07 August 2026

Number of people using drinking water directly collected from surface waters.