Useful Data for Irish River Conservation / Water Quality

July 2024

The document provides guidance for a standardized approach to protecting drinking water sources in line with the recast Drinking Water Directive (EU) 2020/2184 and the European Union Drinking Water Regulations 2023. It emphasizes a risk-based framework aimed at improving the safety and quality of raw water at its source, ensuring compliance with legal requirements and environmental sustainability.

Key Components of the Guidance

1. Risk-Based Framework:
   • Risk Assessment: Identification and analysis of hazards and risks in the catchment areas.
     • Includes catchment delineation, water quality monitoring, and hazard identification.
   • Risk Management: Development and implementation of measures to mitigate risks.
2. Integration with Water Framework Directive (WFD):
   • Aligns drinking water protection with broader water resource management goals, including characterizing catchments and setting environmental objectives.
3. Stakeholder Roles and Collaboration:
   • Involves multiple entities such as water suppliers, local authorities, the Environmental Protection Agency (EPA), and the Geological Survey Ireland (GSI).
   • Promotes data sharing and cooperative planning.
4. Implementation Guidelines:
   • Provides detailed methods for delineating catchment areas for both surface water and groundwater.
   • Includes specific zones of protection to prevent contamination (e.g., exclusion zones and buffer strips).
5. Monitoring and Evaluation:
   • Regular review of risk assessments and effectiveness of risk management measures.
   • Data-driven decision-making supported by shared information platforms like the EPA’s EDEN system.

Major Framework Features

1. Risk Assessment Process:
   • Catchment Delineation:
     • Defines areas contributing water to abstraction points.
     • Covers both surface water and groundwater zones, using models like Zones of Contribution (ZOCs).
   • Raw Water Quality Monitoring:
     • Identifies trends and potential pollutants.
     • Uses indicators such as nitrogen and phosphorus levels to locate Critical Source Areas (CSAs).
   • Hazard Identification:
     • Includes point-source pollution and diffuse pressures from agriculture or wastewater.
   • Interim Story Development:
     • Documents catchment characteristics and conceptual models linking pollution sources, pathways, and receptors.
2. Risk Management Tools:
   • Preventive measures such as pollution reduction programs.
   • Mitigation strategies, including voluntary and statutory interventions.
   • Enforcement mechanisms guided by existing regulations like the Good Agricultural Practices (GAP) Regulations.
3. Stakeholder Engagement:
   • Encourages partnerships among public bodies, water suppliers, and local communities.
   • Emphasizes continuous data sharing for informed risk mitigation.
4. Implementation and Oversight:
   • Assigns responsibilities to various entities, ensuring water suppliers take a leading role.
   • Supervisory authorities like the EPA and local authorities maintain oversight and review processes.

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Special Provisions

• Exemptions:
  • Small supplies (<10 m³/day or serving <50 persons) are subject to specific reduced requirements.
• Safeguard Zones:
  • High-risk areas needing targeted measures to protect water quality.
• Alignment with Agricultural Policies:
  • Leverages schemes like the Agri-Climate Rural Environment Scheme (ACRES) to promote sustainable land use.

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Recommendations

1. Enhance data sharing and integration across platforms.
2. Develop specific technical advice and standardized risk management templates.
3. Conduct public awareness campaigns for private water suppliers.
4. Strengthen delineation techniques for protection zones.
5. Maintain continuous review and improvement through a Drinking Water Expert Group.

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Conclusion

The framework is a comprehensive effort to ensure drinking water safety by protecting its sources through robust risk assessment, effective risk management, and stakeholder collaboration. It integrates legal compliance with sustainable environmental practices, making it a cornerstone for public health and resource management.