Autoridad de Cuenca Matanza Riachuelo (ACUMAR)

Autoridad de Cuenca Matanza Riachuelo (ACUMAR)
Name	Autoridad de Cuenca Matanza Riachuelo (ACUMAR)
Native name	Autoridad de Cuenca Matanza Riachuelo
Formation	2008
Headquarters	Buenos Aires
Region served	Buenos Aires Province, City of Buenos Aires
Leader title	Administrator

Autoridad de Cuenca Matanza Riachuelo (ACUMAR) is an Argentine basin authority created to coordinate remediation of the Matanza River–Riachuelo watershed, a major urban river basin affecting Buenos Aires and surrounding municipalities. Established in response to judicial rulings and public health concerns, ACUMAR interfaces with national and provincial agencies, municipal governments, civil society organizations, and international partners to execute a basin-wide remediation program. Its mandate combines legal compliance, infrastructure investment, environmental monitoring, and social programs across multiple jurisdictions.

Historia

ACUMAR was created after the Supreme Court of Argentina decision in the "Mendoza" case and following the 2006 Asociación Civil and community litigation that culminated in the 2008 Decreto presidencial establishing the authority; the move responded to decades of industrial pollution from La Matanza Partido, Lanús Partido, Avellaneda Partido, Quilmes Partido, Lomas de Zamora Partido and adjacent districts. The basin’s contamination history involved industries such as textile industry plants, tanneries, and chemical industry facilities linked to companies in the manufacturing sector and informal settlements like Villa Inflamable. Early milestones included the 2008 appointment of an interim board with representatives from the Ministry of Federal Planning, the Ministry of Health (Argentina), and provincial authorities, and later coordination with international actors such as the World Bank and the Inter-American Development Bank. Legal milestones included enforcement actions by the Supreme Court of Justice of the Nation (Argentina) and follow-up oversight by public ombudsmen and human rights organizations like Center for Legal and Social Studies.

Misión y funciones

ACUMAR’s mission integrates environmental cleanup, public health protection, and urban redevelopment within the basin, aligning with obligations from the Supreme Court of Argentina ruling on riverside pollution and the Argentine Constitution provisions on environmental rights. Core functions include planning and executing wastewater infrastructure projects in coordination with entities such as AySA (Aguas y Saneamientos Argentinos), environmental monitoring with the Secretariat of Environment and Sustainable Development (Argentina), remediation of industrial contamination involving petrochemical and metalworking sites, and implementation of social programs targeting communities in Villa 31-type neighborhoods and other informal settlements. ACUMAR is also tasked with enforcing compliance through collaboration with the National Directorate of Environmental Fiscalization and providing technical assistance to municipal water utilities and public health agencies like the Ministry of Health (Argentina).

Organización y gobernanza

The governance structure established a board with representatives from national ministries such as the Ministry of Environment and the Ministry of Interior, the Buenos Aires Province government, and the City of Buenos Aires administration, alongside delegates from affected municipalities including Avellaneda Partido and Quilmes Partido. Oversight mechanisms involve the Ombudsman of the Nation and judicial supervision by the Supreme Court of Argentina, while technical committees coordinate with academic institutions like the University of Buenos Aires and research centers such as the CONICET. ACUMAR’s administrative apparatus comprises divisions for engineering, legal affairs, environmental monitoring, and social management, and it conducts public tenders regulated under national procurement frameworks and the Argentine Public Procurement Law.

Plan de saneamiento y obras

The remediation plan combined immediate interventions—such as removal of solid waste and channel dredging in sections of the Riachuelo—with medium- and long-term infrastructure projects including expansion of sewage networks and construction of wastewater treatment plants tied to Aguas y Saneamientos Argentinos projects. Major works included sewer interceptors serving Avellaneda, Lanús, and Quilmes, rehabilitation of industrial sites under soil remediation protocols, and urban upgrading programs addressing flood control and riparian restoration. ACUMAR coordinated with international financing instruments from the Inter-American Development Bank and technical cooperations involving the World Bank and bilateral partners, and contracted engineering firms and construction companies operating in the Argentine construction industry.

Financiamiento y presupuesto

Funding sources combined national budget allocations from ministries such as the Ministry of Economy (Argentina), provincial transfers from Buenos Aires Province, municipal contributions, and loans and grants from multilateral lenders including the Inter-American Development Bank and the World Bank. Fiscal execution faced a mix of public procurement processes and conditional disbursements tied to project milestones; budgetary oversight involved the Comptroller General of the Nation and judicial review when compliance disputes arose. Private liabilities were pursued through litigation and settlement processes against industrial polluters, intersecting with corporate actors from the textile industry and leather tanning sector.

Controversias y críticas

ACUMAR has been criticized by environmental NGOs, human rights organizations, and academic researchers including affiliates of the University of Buenos Aires and CONICET for perceived delays, insufficient transparency, and conflicts with municipal authorities and industrial stakeholders. High-profile controversies included disputes over tender awards with construction firms, contested environmental impact assessments involving consulting companies, and allegations of inadequate remediation of persistent toxic hotspots near neighborhoods like La Boca and Dock Sud. Judicial interventions by the Supreme Court of Argentina and actions by the Public Defender of the Nation (Argentina) highlighted tensions between legal mandates and bureaucratic implementation, while investigative reporting in outlets such as Página/12 and Clarín amplified public scrutiny.

Resultados y evaluaciones ambientales

Independent assessments by academic groups from the University of Buenos Aires, reports by the World Bank, and monitoring by the Secretariat of Environment and Sustainable Development (Argentina)Ministry of Health (Argentina) indicate localized improvements in wastewater capture, reduced direct sewage discharges in some sectors, and increased household connections to sanitation networks; however, persistent contamination of sediments and bioaccumulation issues involving heavy metals near industrial clusters remain documented. Evaluations reference water quality parameters, epidemiological indicators reviewed by the Ministry of Health (Argentina), and biodiversity analyses involving riparian flora and fauna monitored by research institutes such as CONICET. While infrastructure milestones demonstrate progress in interception and treatment capacity, comprehensive basin recovery is assessed as incomplete by multilateral lenders and civil society, necessitating sustained coordination among national ministries, provincial authorities, municipal governments, and international partners.

Category:Environmental agencies of Argentina