Wikipedia

Wastewater treatment part of the overarching field of sanitation. Sanitation also includes the management of human waste and solid waste as well as stormwater (drainage) management
Integrated urban water management in Medellín Valley. The Medellín River and Flowing Streams Sanitation Program, led by EPM, aims at the decontamination of the Medellín River and a reduction of the rivers
Water management in the Metropolitan Region of São Paulo was in charge of water supply and sanitation; municipalities were in charge of zoning, building permit and solid waste management; and CETESB was in charge
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