A water pricing model for urban areas based on water accessibility

Area of Science:

• Environmental Science
• Water Resource Management
• Urban Planning

Background:

• Water scarcity is a critical global issue, necessitating equitable resource allocation.
• Current water pricing systems often fail to account for geographical variations in water accessibility.
• Existing regional-average pricing models lack the granularity for efficient fine-scale management.

Purpose of the Study:

• To propose and validate a novel Water Price at Grid-scale (WPG) model for dynamic water pricing.
• To integrate fine-scale water accessibility into urban water pricing frameworks.
• To enhance water resource management in water-limited urban environments.

Main Methods:

• Development of the Water Price at Grid-scale (WPG) model.
• Integration of water accessibility data with current water pricing regimes.
• Case study application in the Han River Basin, Hubei Province, China.

Main Results:

• The WPG model successfully allocated three-tier water prices to fine grids within the study area.
• Grid-scale prices (P_grid) varied across tiers, ranging from 0.47 to 6.94 yuan/m³.
• Grids with higher water acquisition generally exhibited lower water prices, and vice versa.

Conclusions:

• The WPG model provides a spatially explicit and dynamic approach to water pricing.
• The framework is adaptable to different regions and can be integrated into smart city networks.
• This model offers a promising solution for alleviating water shortage pressures in urban societies.