How many years of comparable data are there for Namibia and Tanzania?

25 years are reported by both, from 2000 to 2024.

Where does this data come from?

WHO/UNICEF Joint Monitoring Programme for Water Supply, Sanitation and Hygiene (2025) – processed by Our World in Data, published as Share of population not using improved sanitation facilities. Statizoid refreshes it automatically from the source and publishes the full history for both places.

Namibia vs Tanzania: Share of population not using improved sanitation facilities

Namibia

47.3%

in 2024

Tanzania

42.4%

in 2024

Namibia rank

18th

Tanzania rank

21st

Share of population not using improved sanitation facilities over time

Namibia
Tanzania

How they compare

Namibia currently reports 47.3% against 42.4% in Tanzania, a difference of 4.9%.

That makes Namibia's figure about 1.1 times Tanzania's.

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

Namibia ranks 18th and Tanzania ranks 21st of 232 countries.

Across the 3 decades both report, Namibia averaged higher in 1 and Tanzania in 2.

Head to head by decade

Decade	Namibia	Tanzania	Difference	Ahead
2000s	60.6%	84.7%	24.1%	Tanzania
2010s	52.8%	64.0%	11.1%	Tanzania
2020s	48.3%	47.1%	1.2%	Namibia

Averages of every year both report within each decade.

Frequently asked questions

Which has higher share of population not using improved sanitation facilities, Namibia or Tanzania?: Namibia, at 47.3% against 42.4% in Tanzania as of 2024.
What is the difference in share of population not using improved sanitation facilities between Namibia and Tanzania?: 4.9%, with Namibia ahead.
How many years of comparable data are there for Namibia and Tanzania?: 25 years are reported by both, from 2000 to 2024.
How do Namibia and Tanzania rank globally for share of population not using improved sanitation facilities?: Namibia ranks 18th and Tanzania ranks 21st of 232 countries.
Where does this data come from?: WHO/UNICEF Joint Monitoring Programme for Water Supply, Sanitation and Hygiene (2025) – processed by Our World in Data, published as Share of population not using improved sanitation facilities. Statizoid refreshes it automatically from the source and publishes the full history for both places.

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Namibia vs Tanzania: Share of population not using improved sanitation facilities. Statizoid, drawing on WHO/UNICEF Joint Monitoring Programme for Water Supply, Sanitation and Hygiene (2025) – processed by Our World in Data. Retrieved 22 September 2026, from https://reference.statizoid.com/compare/share-without-improved-sanitation/namibia/tanzania/

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<a href="https://reference.statizoid.com/compare/share-without-improved-sanitation/namibia/tanzania/">Namibia vs Tanzania: Share of population not using improved sanitation facilities</a> — Statizoid

About this data

Indicator: Share of population not using improved sanitation facilities
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: 232 places, 5,597 data points, 2000–2024
Last refreshed: 18 September 2026

If no improved sanitation facility is available, people might practice open defecation or use unimproved sanitation facilities.