Start with the definition
Sanitation is wider than waste collection.
In public discussion, “sanitation” can refer to very different systems. WASH programmes focus on water, toilets, hygiene and safe management of human waste. City sanitation also includes solid and liquid waste collection, street cleanliness, drainage and disposal. Coastal sanitation adds another layer: preventing waste and contaminated runoff from reaching beaches, creeks, wetlands and the sea.
Those systems overlap, but they are not interchangeable. A credible sanitation strategy needs to identify the specific problem, the responsible authority, the operating gap and the evidence needed before choosing an intervention.
Current national context: UNICEF Sierra Leone's WASH overview reports continuing large gaps in basic sanitation and hygiene access. The figures should be read with their source definitions and reporting period rather than mixed with older survey numbers.