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Comparative evaluation of risk management frameworks for U.S. source waters
Karen Setty1, Robert McConnell2, Robert Raucher3
1The Water Institute Department of Environmental Sciences and Engineering, Gillings School of Global Public Health, University of North Carolina at Chapel Hill Chapel Hill North Carolina.
AWWA Water Science
|April 20, 2019
Summary
A new study recommends combining the ANSI/AWWA G300 standard and WHO Water Safety Plan guidance for comprehensive U.S. surface water risk management. This approach integrates financial considerations for better source water protection.
Area of Science:
- Environmental Science
- Water Resource Management
- Public Health
Background:
- The Safe Drinking Water Act mandates source water assessments, but comprehensive risk management for surface water is underutilized.
- Effective prioritization and management of contamination risks for public water supplies remain a challenge.
Purpose of the Study:
- To identify optimal risk management frameworks for U.S. water utilities.
- To assess the applicability of various risk management tools for surface water supplies.
Main Methods:
- A literature review and interviews with external utilities were conducted.
- Qualitative data informed the evaluation of 24 framework criteria across five categories.
- Stakeholder input was used for weighted integration and ranking, validated in a workshop.
Main Results:
- A hybrid approach combining the American National Standards Institute/American Water Works Association (ANSI/AWWA G300) standard and World Health Organization Water Safety Plan guidance emerged as most applicable.
- Incorporating cost-benefit analysis from other frameworks was recommended for financial decision-making.
Conclusions:
- The recommended hybridized framework offers a comprehensive strategy for U.S. source water protection.
- Integrating financial analysis enhances the practical application of risk management for utilities.
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