The Weekly: Winter Storm Fern Exposed Vulnerabilities in U.S. Water Infrastructure

The absence of references to climate change in utilities' bond disclosures suggests we have not systematically assessed how climate hazards could disrupt operations or revenues and, just as concerning, that they aren’t incorporating climate risk into capital planning and investment decisions.

The Weekly: Winter Storm Fern Exposed Vulnerabilities in U.S. Water Infrastructure
Photo by Yomex Owo / Unsplash
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Each major storm that hits the U.S. serves as a real-world infrastructure audit, providing a stress test for the resilience of different components of the country’s systems. Winter Storm Fern, which pummelled large swaths of the U.S. in January, turned the spotlight on water infrastructure. 

Across the central and southern U.S., snow, ice, and sustained cold triggered hundreds of water main breaks, boil-water advisories, and water outages. Another wave of damage struck once the storm finally passed: hundreds of pipes burst in North Texas as cracked pipes unfroze. The issues sketch out a map of where water systems are getting brittle and where there are gaps between physical climate risk and the investment planning needed to close those gaps.

A recent study from Carnegie Mellon University quantifies this problem: Drinking water utilities serving 67 million Americans are located in areas facing high climate risk from flooding, drought, wildfire, and extreme cold. However, more than a third of those utilities’ bond disclosures, which outline the risks associated with lending money to these utilities, don’t mention climate change. 

The absence of climate disclosures suggests utilities have not systematically assessed how climate hazards could disrupt operations or revenues and, just as concerning, that they aren’t incorporating climate risk into capital planning and investment decisions. As a result, investors, regulators, and ratepayers are operating blind to threats facing critical infrastructure, and communities remain unprepared for accelerating climate impacts. 

This is worrisome in a state like Texas, which has 74 drinking water utilities, less than 5% of which mention climate change in their bond statements. When investors buy municipal bonds from these utilities, they’re essentially betting on infrastructure that may not withstand the next climate disaster, without being told that risk even exists. And utilities likely haven’t modeled how extreme heat, drought, or flooding could strain treatment capacity or increase costs.

Another example is Jackson, Mississippi, classified by the CMU study as “High Priority,” meaning high climate risk with no climate disclosure. In 2022, flooding coupled with aging infrastructure left 180,000 residents without clean drinking water after the city’s main water treatment plant failed. That facility had experienced “recent flooding” and “operational failures,” yet climate change was not referenced in the bonds that financed the system.

Fortunately, practical opportunities exist for various ecosystem stakeholders to help close the gap between physical risk and financial planning:

  • Ratings agencies can incorporate physical climate risk into municipal bond ratings, even for short-term debt, to better reflect long-term system vulnerability and align borrowing costs with actual risk exposure.
  • The EPA can require utilities to quantify future climate-driven capital needs in its Drinking Water Infrastructure Needs Survey, improving national risk accounting and enabling state revolving funds to prioritize climate-vulnerable systems.
  • States can mandate climate risk assessments for drinking water utilities, particularly in high-risk regions like Texas, where awareness remains low. As an example, the California State Water Board adopted a resolution in 2017 to “integrate climate change comprehensively into its programs and decisionmaking, including drinking water regulation, water quality initiatives, and financial assistance.”
  • Federal and state agencies can require formal climate adaptation planning and provide accessible, high-quality risk data to support informed decision-making. According to the Georgetown Climate Center, 19 states have state-led climate adaptation plans already, many of which have “Low Priority” water utilities, as labeled by the CMU study. 
  • Public infrastructure funding can be prioritized using climate risk metrics, directing planning support and capital toward “High Priority” utilities.

Winter Storm Fern demonstrated a critical disconnect: We know where climate risks threaten water infrastructure, but that knowledge hasn’t translated into the financial planning and capital investment needed to protect those systems. Solutions exist. The key is to implement those solutions before the next climate disaster hits.

What We’re Reading From the Resiliency Ecosystem

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Read more about insurance on The Epicenter here.

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Read more about resilient public infrastructure and government solutions on The Epicenter here.

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The Statistic of the Week 

2.1 trillion gallons 

In the U.S., about 2.1 trillion gallons of water are lost every year in water main breaks, partially due to aging infrastructure. 

Source: EPA.


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The Epicenter helps decision makers understand climate risks and discover viable resilience solutions. The Epicenter is an affiliated publication of The Resiliency Company, a 501(c)3 nonprofit dedicated to inspiring and empowering humanity to adapt to the accelerating challenges of the next 100+ years.

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