# Monquirá River pollution and ecological crisis > Live situation record from CLSTR: https://clstr.news/situations/monquir-river-pollution-and-ecological-crisis > Updated: 2026-08-28T18:04:36.000Z. Sources: 5. Developments: 2. The Monquirá River in Sogamoso is experiencing a severe ecological and sanitary crisis characterized by high levels of water degradation. Technical diagnoses indicate high to very high concentrations of fecal coliforms resulting from untreated sewage discharges from the Pilar and Ceibita areas, as well as organic matter from the Carrera 14 collector. This contamination has caused a critical oxygen deficit, leading to the elimination of aquatic life and an irreversible loss of 5% of local ecosystems. Beyond sewage, the river is being impacted by the illegal disposal of construction debris, pottery waste, and toxic materials such as mattresses. These activities have reduced the hydraulic capacity of the protective zone, causing flooding in residential sectors including Venecia, Vargas, and Lomitas. The contaminated water flows into the Chicamocha River, posing a threat to livestock and agricultural irrigation. ## Timeline ### 2026-08-28: Monquirá River faces severe pollution and ecological crisis in Sogamoso The Monquirá River in Sogamoso faces a severe ecological crisis due to untreated sewage, illegal waste dumping, and high fecal coliform levels, threatening local ecosystems and the Chicamocha River. 2 sources. https://clstr.news/cluster/monquir-river-faces-severe-pollution-and-ecological-crisis-in-sogamoso ### 2026-08-27: San José del Guaviare residents report sewage overflow and safety risks Residents in the El Porvenir neighborhood of San José del Guaviare, Colombia, report sewage overflows causing foul odors and traffic accidents due to loose manhole covers. 3 sources. https://clstr.news/cluster/san-jos-del-guaviare-residents-report-sewage-overflow-and-safety-risks --- Cite as: Monquirá River pollution and ecological crisis. CLSTR, https://clstr.news/situations/monquir-river-pollution-and-ecological-crisis