Huang Yabi, Li Zijian
School of Public Health (Shenzhen), Sun Yat-sen University, Shenzhen, Guangdong 518107, China.
iScience. 2025 Jun 9;28(7):112861. doi: 10.1016/j.isci.2025.112861. eCollection 2025 Jul 18.
Pesticide residues in freshwater threaten water sustainability, but the global discrepancies in freshwater pesticide contamination remain uncertain. This study collected pesticide concentration data from various countries around the world and adopted a flexible scoring approach to assess contamination within surface freshwater and groundwater. Results revealed significant disparities in contamination among countries. Africa was identified as a priority for freshwater pesticide control as most countries there showed relatively high scores in both surface freshwater and groundwater. Notably, robust pesticide regulations were associated with reduced surface freshwater pollution, whereas pesticide usage intensity showed no clear effect. Additionally, pesticide residues in freshwater pose challenges to drinking water safety, with over half of the water samples in many African and Asian countries exceeding aldrin and dieldrin limits. These findings provide insight into the pattern of global pesticide freshwater contamination, urging efforts on comprehensive water monitoring networks and joint pesticide management within freshwater.
淡水中的农药残留威胁着水的可持续性，但全球淡水中农药污染的差异仍不明确。本研究收集了世界各国的农药浓度数据，并采用灵活的评分方法来评估地表水和地下水中的污染情况。结果显示各国之间的污染存在显著差异。非洲被确定为淡水农药控制的重点地区，因为那里的大多数国家在地表水和地下水中的得分都相对较高。值得注意的是，强有力的农药法规与地表水污染的减少有关，而农药使用强度则没有明显影响。此外，淡水中的农药残留对饮用水安全构成挑战，许多非洲和亚洲国家超过一半的水样中艾氏剂和狄氏剂含量超标。这些发现为全球农药淡水污染模式提供了见解，敦促在淡水领域建立综合水监测网络并进行联合农药管理。
