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Rural domestic wastewater in China has scattered discharge, difficult centralized treatment, and a wide pollution area, which has caused serious water environment pollution in rural areas. This is a prominent problem for the improvement of the rural living environment at present in China. After more than 100 years of development, rural decentralized wastewater treatment in the United States is well developed, with lessons worth learning for our country. By examining the development process for rural wastewater treatment in the United States, this paper summarizes successful experiences from rural decentralized wastewater treatment in the United States in relevant policies and laws, application technology, technical specifications and standards, financial support, and operation management. These findings offer important insights for rural wastewater treatment in China. This is vital to broaden ideas for rural domestic wastewater treatment and help the implementation of the Rural Revitalization Strategy. [ABSTRACT FROM AUTHOR]