The map below shows the southern part of Tlalpan, a borough in Mexico City. Located at the foot of the mountains, this part of Mexico City is less urbanized and contains a number of forests and ecologically sensitive areas. The water supply in this area is precarious, and many informal settlements have taken root that don't have access to piped water. Water must often be delivered by trucks to these communities, and represents a significant cost for many poor families.
To determine where rainwater capture systems could have the most impact, researchers combined indicators such as the percentage of households with access to piped water, education levels, and the number of informal settlements to create a water stress index. This map displays the water stress index, informal settlements, and 1,790 rainwater harvesting systems installed during two different phases of the project. Read the full story: Study Paves Way for Rainwater Harvesting in Mexico City
Map Notes: Blue systems were installed by the government program in 2020, green were installed by Isla Urbana prior to 2017. Water stress is normalized on 0-1 scale. Informal settlements: SEDEMA, 2016.
Use mousewheel, buttons, or double-click to zoom; drag and drop to pan. Hover over polygons to view water stress index. Use buttons at lower left to show/hide layers.