America's drinking water systems have a hard-to-swallow cybersecurity problem

An EPA Office of Inspector General study found cybersecurity shortcomings in roughly 308 of 1,062 large drinking water systems—affecting systems that serve tens of millions of Americans—with 97 systems having critical or high-risk issues; the report highlights externally visible vulnerabilities, potential impacts to physical infrastructure, and gaps in EPA incident reporting and interagency coordination, while noting similar aging-infrastructure security concerns in the UK.