untreated effluent造句

• Pollution in the 1980s was largely the result of untreated effluent from livestock farms and unsewered villages , made worse as the new towns developed by increasing numbers of industrial and commercial premises and especially those using expedient connections i . e . where untreated effluent is channelled into the stormwater drain system instead of into sewers to dispose of waste
  新界的新市镇迅速发展，工商业设施日渐增多，当中有些楼宇非法接驳排污渠即将未经处理的污水排入雨水渠系统而非污水渠，导致河溪污染问题加剧。