Risky Business

W ater systems operate in a world of increasing complexity.From safeguarding public health to protecting the environment, a water utility's core mission is rooted in understanding and minimizing risk.Yet risk itself is multifaceted, often difficult to understand and even more difficult to communicate.The water industry faces risks such as microbial and chemical threats to water quality, aging and outdated infrastructure, climate-driven extremes, and cybersecurity vulnerabilities.Each of these unknowns demands a tailored response, grounded in robust assessment and adaptive management.And while tools like quantitative microbial risk assessment, multi-hazard frameworks, and machine learning models can quantify and prioritize risks, technical solutions alone aren't enough.Risk communication is just as critical.Poor communication can erode trust or provoke unnecessary alarm.Utilities must engage proactively, fostering transparency and credibility before risks can materialize.Early dialogue, acknowledgment of uncertainty, and inclusive decision-making help build consensus-especially for major investments like infrastructure upgrades or new water supply projects.Even when technical findings are met with skepticism, utilities that communicate openly and respectfully can still be seen as trustworthy.This is vital for an industry in which risk tolerance is-and should below.Unlike other industries, water utilities cannot afford to accept risks that might lead to public health crises or ongoing service disruptions.Risk management is not about eliminating uncertainty but navigating it wisely.It involves comparing relative risks, evaluating likelihoods, and making informed choices about what water systems should address now versus later.These decisions are inherently subjective and vary by utility, community, and context.But the goal remains the same: to protect people and resources through thoughtful, resilient, transparent approaches.AWWA Water Science is joining with the journal Risk Analysis to co-publish a topical collection of peer-reviewed research articles.This collection aims to bring together interdisciplinary research that advances our understanding of risk in water systems-from infrastructure resilience and public health protection to climate adaptation and decision-making under uncertainty.By integrating rigorous risk assessment methodologies with applied water science and practice, this collection aims to foster innovative solutions and cross-sector collaboration to address emerging threats and opportunities in the water industry.