Activists Battle to Save São Paulo's Billings Reservoir from Collapse

Brazil's largest urban reservoir, Billings, is under severe threat from pollution and illegal deforestation, jeopardizing a critical water source for nearly 22 million São Paulo residents. Biologist Marta Marcondes and activist Wesley Silvestre Rosa are campaigning to restore the reservoir's health.

Billings, vital for water supply, energy generation, and flood control, is contaminated with household and industrial waste, pharmaceutical residues, and microplastics. Urban planners attribute this degradation to official neglect, flawed policies, and uncontrolled urban expansion.

Over the past decade, water quality and storage capacity have deteriorated significantly. Activists warn of a potential system collapse if immediate action isn't taken. In January, São Paulo's water utility, Sabesp, was fined for alleged waste dumping, which the company attributed to rainwater overwhelming the sewage system.

Illegal deforestation along the reservoir's banks, often for clandestine construction, further reduces its storage and flood-control capacity. Despite legal protections, powerful real estate interests circumvent environmental laws, leading to ongoing construction in protected areas.

Environmental crimes, including deforestation and illegal land sales, have been acknowledged by city hall. Authorities are conducting operations to inspect, fine, and dismantle illegal constructions. The situation is urgent as São Paulo faces increasing water shortages due to the climate crisis, with Billings slated to play a larger role during scarcity periods.