合肥地区属于波状平原裂隙孔隙淡水贫水亚区,无良好的含水层。但在这类地区中的现代河谷全新统含水情况较好,在流经市区的南淝河两岸向外延伸约1公里的河谷范围内,就有与河水呈相互补给关系的浅层地下水。合肥市的旧城区(现淮河路、安庆路一带)就建在这类地质结构的土地上。在这里打井,穿过5～10米的覆盖层,就出现含水层。因此,这一带居民至今还有使用和饮用井水的情况。近二十年来,阴离子合成洗涤剂直链 Hefei area belonged to wavy plain freshwater depleted subregion, with no good aquifer. However, the Holocene Holocene in the modern valleys in these areas is in better condition. Shallow groundwater, which has a reciprocal relationship with the river water, flows within about 1 km of the river valleys extending across the Nanfang River flowing through the urban area. The old city of Hefei (now Huaihe Road, Anqing Road area) is built on the land of such geological structure. Drilling wells here, through 5 to 10 meters of cover, there aquifer. Therefore, there are still cases of using and drinking well water in this area. For nearly two decades, anionic synthetic detergents have been linear