Municipal No 1 Wastewater Treatment Plant, Lázaro Cárdenas, Michoacán

Municipal No 1 is a wastewater treatment plant located in the industrial zone of Lázaro Cárdenas, Michoacán, Mexico. The plant serves a population of around 97,930, placing it in the medium-to-large agglomeration category for Mexican wastewater infrastructure. As a plant of this scale in Mexico, it is subject to national regulations under the Ley de Aguas Nacionales and the Norma Oficial Mexicana NOM-001-SEMARNAT-1996, which sets discharge limits for pollutants into national waters. Plants serving populations of this size typically employ secondary treatment or higher to meet regulatory standards. The plant is situated within 50 km of the Pacific coast, and its treated effluent likely discharges into a local watercourse that drains into the Pacific Ocean. The surrounding region includes industrial zones and the port of Lázaro Cárdenas, making effective wastewater treatment important for protecting coastal water quality and marine ecosystems.

The plant is located near the Pacific coast of Michoacán, within the drainage basin that flows into the Pacific Ocean. The receiving water body is likely a local river or stream that ultimately reaches the sea. This coastal environment supports diverse marine life and is important for local fisheries and tourism. Proper treatment of wastewater is essential to prevent nutrient pollution and protect downstream ecosystems.