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<p>Groundwater contamination from informal landfills has become increasingly severe due to inadequate management and non-compliant design. These informal landfills are predominantly located in peri-urban areas, where groundwater serves as a critical drinking water source. Contamination from these sites poses significant risks to adjacent groundwater resources. This study collected 87 groundwater samples from 12 informal landfills to evaluate fluoride’s impact on groundwater utilization. Findings indicated that landfills themselves presented a high—highest risk and all sites exhibited high or elevated pollution risk levels, with 11 samples exceeding Class III groundwater standards. The Nemerow index identified moderate to slight pollution at sites 1, 3, and 12. Species Sensitivity Distribution (SSD) results revealed high ecological risks from fluoride across all sites. Non-carcinogenic risk assessments showed unacceptable health risks for 12.64% of men, 13.79% of women, 52.87% of children, and 94.25% of infants. Fluoride contamination significantly hinders groundwater development in these areas, with long-term implications for surrounding water resources, necessitating immediate remediation measures.</p>

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Assessing Fluoride Contamination in Groundwater of Informal Landfills in the Yangtze River Delta: Implications for Environmental Security and Sustainable Resource Management

  • 期刊论文

  • 发表日期：

    2025年6月2日

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  • Lichen Liang,
  • Xiaofei Yan,
  • Yaping Qi,
  • Lili Wang,
  • Haifeng Tu,
  • Hao Jiang,
  • Dan Wang,
  • Houhu Zhang,
  • Yuanshun Xu

摘要

Groundwater contamination from informal landfills has become increasingly severe due to inadequate management and non-compliant design. These informal landfills are predominantly located in peri-urban areas, where groundwater serves as a critical drinking water source. Contamination from these sites poses significant risks to adjacent groundwater resources. This study collected 87 groundwater samples from 12 informal landfills to evaluate fluoride’s impact on groundwater utilization. Findings indicated that landfills themselves presented a high—highest risk and all sites exhibited high or elevated pollution risk levels, with 11 samples exceeding Class III groundwater standards. The Nemerow index identified moderate to slight pollution at sites 1, 3, and 12. Species Sensitivity Distribution (SSD) results revealed high ecological risks from fluoride across all sites. Non-carcinogenic risk assessments showed unacceptable health risks for 12.64% of men, 13.79% of women, 52.87% of children, and 94.25% of infants. Fluoride contamination significantly hinders groundwater development in these areas, with long-term implications for surrounding water resources, necessitating immediate remediation measures.