1·Run-off from animal manure also fouls watercourses, and the release of nitrous oxides from uncovered dung heaps pollutes the air.
动物粪便的流出物还污染了水道，未遮盖的粪堆释放出的氧化亚氮（ N2O） ，还会污染空气。
2·Livestock farmers are also required to install and operate waste treatment systems under the Livestock Keeping Licensing Scheme to prevent pollution of watercourses.
根据禽畜饲养发牌计划，禽畜农场必须装设和使用废物处理系统，以防止污染水道。
3·Storm drainage, even though the water may enter watercourses by way of pipes or channels, is considered nonpoint source pollution.
雨水排水也会通过水管或管道进入水道，这都被认为是非点源污染。
4·Water pollutants are categorized as point source or nonpoint source, the former being identified as all dry weather pollutants that enter watercourses through pipes or channels.
水污染物分为点源和非点源，前者认为所有干燥空气污染物通过水管或管道进入水道。