摘要:Non-point pollution is caused by pollutant loads outflowing from diffuse sources other than point sources, such as domestic effluent, factories, and mines. Especially in urban areas, road surfaces have a high potential for non-point pollution. The present review presents actual conditions, impacts, measures and perspectives relating to non-point pollution in urban areas, with reference also to problems and countermeasures relating to the sewerage system. The implementation of countermeasures against non-point pollution will contribute to the future improvement of the quality of the water environment.