Board of Water Supply City & County of Honolulu
Climate Impact & Sustainability Data (2019)
Reporting Period: 2019
Environmental Metrics
ESG Focus Areas
- Climate Change
- Water Resource Management
Climate Goals & Targets
Long-term Goals:
- Address long-term infrastructure impacts from sea level rise (2050-2100)
Medium-term Goals:
- Implement various water supply adaptation strategies (2030-2050)
Short-term Goals:
- Reduce per capita water demand from 155 gpcd to 100 gpcd (2020-2030)
Environmental Challenges
- Climate change impacts on Oahu's water supply and infrastructure, including sea level rise, changes in rainfall patterns, and increased intensity of storms.
- Potential decrease in Oahu's sustainable water yields due to reduced recharge.
Mitigation Strategies
- Aggressive water conservation measures to reduce per capita water demand.
- Stormwater capture initiatives.
- Expansion of water reuse programs.
- Increased water transfers between aquifers.
- Assertion of public trust water rights.
- Development of desalination facilities.
- Implementation of direct or indirect potable reuse with advanced treatment.
- Adaptive management strategies for flexible decision-making in the face of uncertainties.
- Scenario planning to consider a range of potential changing conditions.
Supply Chain Management
Climate-Related Risks & Opportunities
Physical Risks
- Sea level rise
- Changes in rainfall patterns
- Increased intensity of storms
- Coastal erosion