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PUC outlines climate-assessment program, flags $10–$20 million backflow prevention estimate
Summary
PUC presented a climate-change assessment and adaptation program (PUMA and HVAM) to translate climate-model outputs into operational impacts for water, wastewater and power. Staff cited an initial backflow-prevention adaptation estimate of $10–$20 million and pledged further analysis and stakeholder coordination.
David Behar, the PUC’s climate program director, briefed the commission on the agency’s climate assessment and early adaptation work, describing assessment tools, modeling timelines and early cost estimates.
Behar said the PUMA project (Piloting Utility Modeling Applications) is a multi-utility effort that will produce state-of-the-art climate assessments, and the PUC is calibrating a hydrologic model (HVAM) to test sensitivity of inflows to Hetch Hetchy under a set of scenarios for 2040, 2070 and 2100. He…
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