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Updated: Jul 28, 2026
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Integrated Field Lysimetry and Porewater Sampling for Evaluation of Chemical Mobility in Soils and Established Vegetation
Published on: July 4, 2014
Pesticides in drinking water--a case study
1International Programme on Chemical Safety (IPCS), World Health Organization, Geneva, Switzerland.
Summary
Pesticides in drinking water require safety assessments using health-based guidelines. Risk management strategies, including the precautionary principle, are employed to evaluate potential health risks from pesticide exposure.
Area of Science:
- Environmental Chemistry
- Toxicology
- Public Health
Background:
- Pesticides are intentionally used in agriculture and public health, leading to their presence in drinking water.
- These compounds exhibit diverse chemical properties, environmental persistence, and varying toxicological profiles.
- Assessing the safety of pesticides in drinking water is crucial for public health protection.
Purpose of the Study:
- To outline the methodologies for assessing the safety of pesticides in drinking water.
- To describe the risk assessment and management approaches for pesticide exposure via drinking water.
Main Methods:
- Health-based guidelines are established for exposure through drinking water.
- The tolerable daily intake (TDI) approach is utilized for pesticides with effect thresholds.
- Low-dose extrapolation is applied for non-threshold carcinogens.
Main Results:
- Different toxicological endpoints necessitate varied assessment strategies.
- Risk management can incorporate the precautionary principle alongside quantitative risk assessment.
- Comprehensive data evaluation is fundamental for accurate risk assessment.
Conclusions:
- Rigorous safety assessments are essential for pesticides in drinking water.
- A combination of TDI and low-dose extrapolation, guided by the precautionary principle, ensures robust risk management.
- Protecting public health requires continuous evaluation of pesticide risks in drinking water.
