污染物质的来源广泛，包括农业、工厂排放物、消费产品、城市河道和污水处理工厂。
The pollutants derive from a wealth of sources, including agriculture, factory discharges, consumer products, urban runoff and wastewater treatment plants.
尽管如此，诸如城市径流遭到污染以及污水外溢等问题仍然困扰着当地的河道。
However, problems like urban runoff and sewer overflows continue to trouble local waterways.
蓄水河道内的蓄水主要籍洪水的尾水补充更换，并肩利用开发区专设的污水站补充征发与渗漏。
Water storage within the main river flood tail water added membership change, together use zone of the sewage station dedicated additional levy made and leakage.
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