Biologist and activist monitor pollution in Brazil’s largest urban reservoir

1 source(s) · earliest article 2026-06-04 17:15 +04:00 · cluster #929 · category: Politics · model: qwen2.5:7b · priority 41.2/100

Marta Marcondes and Wesley Silvestre Rosa use a motorboat to assess the water quality of Billings reservoir, which is crucial for São Paulo's metropolitan area but faces significant pollution from sewage, deforestation, and other sources. Despite its importance for water supply, energy generation, flood control, and recreation, large parts of the reservoir are contaminated with various pollutants.

What each source uniquely contributed

• The Guardian lean-D — Marta Marcondes and Wesley Silvestre Rosa monitor Billings reservoir to address pollution issues affecting São Paulo's water supply.

All sources

1. [S1] The Guardian: ‘Good lord, what a smell’: can Brazil’s biggest city save a vital source of water from sewage, bacteria and organised crime? lean-D · 2026-06-04 17:15 +04:00