Summary
A study suggests that if cities expand by spreading outward rather than building densely, up to 220 million people might lack access to clean water by 2050. The research examined cities in Africa, Asia, and Latin America, finding that sprawling cities face higher water costs and less access to essential services.
Key Facts
- Researchers from Complexity Science Hub and the World Bank conducted the study.
- The study looked at over 100 cities across Africa, Asia, and Latin America.
- Three city growth scenarios were modeled: compact, persistent, and horizontal.
- Under the horizontal growth scenario, 220 million fewer people would have access to piped water.
- Residents in sprawling cities already pay water bills that are about 75% higher than those in compact cities.
- African cities have a lower percentage of residents living centrally compared to Asian cities.
- The study suggests planning compact neighborhoods could improve access to water and sanitation without extra costs.
