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There is a technology called a septic tank. Literally every house without sewage treatment in Brazil has one. Meanwhile, in India, people defecate in the river, on the street, or anywhere else.
A septic tank is a sanitary sewage treatment system used in homes; it is a unit that acts chemically and physically on waste. Because it is more commonly used in rural areas (where there is no sewage treatment), the septic tank purifies the water from toilets so that it can be returned to the environment with minimal environmental impact.