Urban water affordability crisis exacerbated by climate change
気候変動によって悪化する都市部の水の支払い可能性危機 (AI 翻訳)
Jennifer B Skerker, Christian Klassert, Baptiste Francois, Aniket Verma, Casey Brown, Sarah Fletcher
🤖 gxceed AI 要約
日本語
気候変動による水ストレスに対応するインフラ投資が水道料金を引き上げ、低所得世帯の支払い可能性を悪化させることを、カリフォルニア州サンタクルーズのモデル分析で示した。気候変動のみで2050年までに水道料金が2倍になり、追加で7～16%の世帯が支払い困難になる可能性がある。
English
A city-scale model of Santa Cruz, California shows that climate change-driven infrastructure costs could double water bills by mid-century, making water unaffordable for an additional 7–16% of households. The study emphasizes policy interventions to ensure adaptation does not compromise affordability.
Unofficial AI-generated summary based on the public title and abstract. Not an official translation.
📝 gxceed 編集解説 — Why this matters
日本のGX文脈において
日本でも気候変動による水インフラコスト増加が懸念されるが、水道料金の値上げが低所得層に与える影響はこれまで十分に議論されていない。日本の都市政策や水道事業の料金設計に示唆を与える可能性がある。
In the global GX context
This paper provides a framework for assessing climate adaptation costs on household affordability, relevant to global discussions on just transition and climate resilience. It highlights that adaptation measures can have regressive impacts, a concern for ISSB/TCFD reporting on social aspects.
👥 読者別の含意
🔬研究者:Useful for modeling climate adaptation costs and equity in water utility infrastructure planning.
🏢実務担当者:Water utilities and municipal planners can use the framework to evaluate rate impacts on vulnerable households.
🏛政策担当者:Highlights the need for targeted subsidies or progressive rate structures to prevent climate adaptation from worsening inequality.
📄 Abstract（原文）
Climate change intensifies water stress globally, necessitating expensive infrastructure interventions to maintain reliable supply. To fund infrastructure, utilities often raise rates, increasing water bills for low-income households. The resulting affordability impacts depend on utility costs and interactions between rate design, financing, climate and household demands. Here we develop a city-scale modelling framework to estimate climate change impacts on water affordability, integrating climate, utility adaptation decisions and demand. In Santa Cruz, California, we find that climate change alone could double water bills by mid-century, leaving an additional 7–16% of Santa Cruz households with unaffordable water. Our results suggest that climate change may lead to greater water affordability challenges than previously estimated in hotspots where supply is vulnerable to climate change. This highlights the need for policy intervention and financing to ensure climate adaptation does not compromise affordability. The magnitude of climate-related affordability challenges depends on local context, requiring city-scale assessments. Water affordability is a growing challenge, but how climate change may worsen it through costly infrastructure adaptation remains unclear. This study models climate-driven water affordability in Santa Cruz, California, finding that climate change alone could double water bills by mid-century.
🔗 Provenance — このレコードを発見したソース
- openalex https://doi.org/10.1038/s41893-026-01890-zfirst seen 2026-07-30 05:16:20
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