Vol. 16 No. 1 (2021)

The Permanent Preservation Area (PPA) Water index is intended to assess the level of degradation of urban water resources. Its unique feature is not to employ water quality monitoring data, usually unavailable in developing countries. In contrast, it employs easy-to-apply innovative territorial information available in existing databases. The example presented in the map shows the result of PPA Water Index applied to the municipality of Fortaleza, CE, Brazil, categorized in five PPA management levels: Unconcerned (red), Inefficient (orange), Regular (yellow), Concerned (light green), and Efficient (dark green) management of PPAs.

Source: VASCONCELOS, F. D. M. et al. Quality index of permanent preservation areas of urban water resources: PPAWater. Rev. Ambient. Água, Taubaté, vol. 16 n. 1, p. 1-16, 2021. doi:10.4136/ambi-agua.2589

Published: 26/01/2021