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﹒The process of collecting, treating, and discharging wastewater and excreta from residential or industrial sources.
﹒The systematic removal and management of waste matter carried off in sewers to prevent environmental contamination and health hazards.
﹒The city council is planning to upgrade the local sewage disposal system to prevent environmental contamination.
﹒Improper sewage disposal in rural areas can lead to the pollution of nearby groundwater sources.
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