In a significant development for the Complexo da Maré community in North Zone of Rio de Janeiro, a groundbreaking sanitation project has commenced, slated to cost R$ 120 million and benefit approximately 200,000 residents. This project is notable for being the largest intervention of its kind ever undertaken in a low-income area in the city’s history. By implementing advanced tunneling techniques similar to those used in subway construction, the initiative aims to regularize access to clean drinking water while reducing the presence of illegal connections and improving sewage management throughout the region.

The construction is already underway with the use of a smaller variant of the mechanized tunneling shield known as 'tatuzão', which will operate underground to facilitate the installation of necessary piping. The project has begun with the excavation of an 11-meter deep hole, the first of a planned 42 wells throughout the community. These wells are vital for managing the machinery needed for the subterranean work, which will extend approximately 5 kilometers underground, providing space for new sewerage lines and enhancing overall sanitation services in the area.

The benefits of this project are expected to be significant, addressing longstanding issues related to inadequate sanitation in the community. By focusing on infrastructure improvements, the initiative aims to enhance public health, reduce environmental hazards, and contribute to the overall quality of life for Maré's residents. Such large-scale urban interventions have the potential to create a ripple effect of improvement in urban infrastructure for underprivileged communities, marking a critical step towards equitable public service access in Brazil.