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April 19, 2024

EPA moves to make polluters foot the bill for PFAS cleanup

By Shannon Kelleher

US regulators on Friday finalized a rule designating two widespread PFAS chemicals as hazardous substances, a step they say will ensure polluters pay to clean up contamination and reduce Americans’ exposure to the toxic chemicals.

Under the federal Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA), or Superfund law, the rule will require leaks and spills of these per- and polyfluoroalkyl substances (PFAS) to be immediately reported and will enable investigation and cleanup of the chemicals.

The finalized rule “enables the agency to use one of its strongest enforcement tools to compel polluters to pay for or conduct investigations and cleanup, rather than taxpayers,” said the US Environmental Protection Agency (EPA) in a press release. “Designation is especially important as delay in addressing contamination allows PFOA and PFOS more time to migrate in water and soil, worsening existing contamination.”

“This is great news for the many communities grappling with PFAS contamination – many of which are also low income and communities of color,” said Tracey Woodruff, an environmental health researcher at the University of California, San Francisco and a former EPA senior scientist.

The move comes days after the EPA announced the nation’s first legally enforceable drinking water limits for the same chemicals, perfluorooctanoic acid (PFOA) and perfluorooctanesulfonic acid (PFOS), along with four other PFAS.

So-called “forever chemicals,” which do not break down naturally, have been used for decades in consumer products ranging from nonstick pans to waterproof clothes and stain resistant carpet. Exposure to PFAS has been linked to cancers, liver and heart problems, and immune and developmental damage in children, according to the EPA. The chemicals are found in the blood of almost all Americans.

March 22, 2023

“Not a hypothetical”: US water systems at risk from cyber attacks

By Shannon Kelleher

It’s been a little over two years since an unknown attacker tried to poison the water supply in Oldsmar, Florida by hacking into the computer system for the town’s treatment facility and boosting levels of sodium hydroxide in the water to perilously high levels.

An observant plant operator took immediate action to block the efforts before any damage was done. But as one of several similar efforts to tamper with US water systems, the February 2021 incident in Florida provides a stark warning of how vulnerable US water systems can be.

Now, US officials say these so-called “cyber threats” to drinking water supplies are growing, and they are pushing public water systems to tighten security around this type of threat. The Environmental Protection Agency (EPA) warned in a March 3 memorandum that many of the nation’s public water systems are at “high risk of being victimized by a cyber-attack” because they have failed to adopt basic protections.

“When we think about cybersecurity and cyber threats in the water sector, this is not a hypothetical,” EPA Assistant Administrator for Water Radhika Fox said at a press briefing earlier this month. “This is happening right now. We have seen these types of attacks from California to Florida, Kansas, Maine, and Nevada.”

The warnings follow a 2021 joint advisory issued by the EPA, the Federal Bureau of Investigation (FBI), the Cybersecurity and Infrastructure Agency (CISA), and the National Security Agency (NSA) that called on the water sector to implement protective measures. China-based hackers are a particular concern amid heightened geopolitical tensions.

US security experts have recently warned that China may attempt to create “chaos” in America through various means, including polluting US water systems via cyber attacks.

But the threats also come from within. In a 2019 incident, a former employee of a water facility in the small, rural community of Ellsworth County, Kansas used his cell phone to remotely log into the facility’s system and shut down processes the plant uses to clean and disinfect water. The EPA said the man’s actions “threatened the safety and health of an entire community.”