SEDEMA Installs 73,000 Rain Harvesting Systems

Mexico City’s Ministry of Environment (SEDEMA) has installed 73,021 rainwater harvesting systems across the city since 2019. The initiative, part of the "Cosecha de Lluvia" program, aims to enhance water supply in households with high poverty levels.

Of the total systems installed, 65% are in homes led by women, who traditionally have been responsible for securing water for their families. The program allows these women to redirect their time to other activities, improving their quality of life. In 2024, the program expanded with the installation of 10,265 systems in 449 neighborhoods. These systems provide an alternative water source for six to eight months a year, supporting personal and household hygiene, which in turn enhances public health and reduces disease transmission risks.

The 73,021 systems are projected to collect 73,000 tankers of 10,000L each by the end of the year, totaling an estimated 1.7 billion L of rainwater harvested since the program's inception. This effort helps conserve water resources, reduces pollution from energy use in wells and distribution networks, alleviates pressure on the city's water distribution system, minimizes drainage runoff, and lowers the risk of flooding.

Since its launch in 2019, the Rain Harvesting program has been recognized globally. In December 2022, it received an award from ICLEI - Local Governments for Sustainability for "Best Local Water Management," highlighting its scale and the integration of rainwater as a sustainable water management solution. In December 2023, the program extended to educational institutions. All public primary and secondary schools in Mexico City now have rainwater harvesting systems. A total of 2,338 systems were installed in schools, environmental education centers, innovation points, and universities.