While applauding the Biden administration’s new “baby steps” to address “forever chemicals” in drinking water, green groups this week also emphasized that far more sweeping action is needed to protect people and the planet.

“This is a step in the right direction,” said Stel Bailey, co-facilitator of the National PFAS Contamination Coalition, welcoming that the Environmental Protection Agency (EPA) finally “had the courage to follow the science, something we’ve been demanding for years.”

Per- and polyfluoroalkyl substances (PFAS) are widely called forever chemicals because they persist in the human body and environment for prolonged periods of time. They are used in everything from firefighting foam and food packaging to nonstick pans to water-resistant fabrics.

PFAS are also linked tied to health issues—such as cancers and damage to immune and reproductive systems—prompting some states to take action. However, the federal government has yet to make any major moves to regulate the substances.