A method was developed to prioritize pollution control in the Haihe River Basin. The researchers looked at oxygen depletion, eutrophication, and heavy metal risk in the sediment. They found that oxygen depletion was a major issue in several river systems, while eutrophication was a concern in others. Heavy metal pollution was low overall but significant in certain areas. The priority for pollution control in the Haihe River Basin should focus on oxygen consumption first, then eutrophication, and finally heavy metal pollution. Different river systems require different approaches, with some needing more attention to oxygen depletion and others to eutrophication or heavy metal pollution.