PFAS

EPA Issues National PFAS Drinking Water Standard

On April 10th, 2024, the U.S. Environmental Protection Agency (EPA) issued its first-ever national drinking water standard to protect the public from per- and polyfluoroalkyl substances (PFAS). This action follows years of scientific research and stakeholder engagement aimed at reducing PFAS exposure and its associated health risks. Public water systems have three years to complete initial PFAS monitoring. If PFAS levels exceed EPA limits, systems must implement mitigation measures within five years.

What Are PFAS?

PFAS are a group of synthetic chemicals used in consumer products and industrial applications since the 1940s. These include nonstick cookware, waterproof clothing, microwave popcorn bags, and cosmetics. Known as “forever chemicals,” PFAS persist in the environment and may pose health risks.

PFAS and South St. Paul’s Water Supply

The City of South St. Paul, in coordination with the Minnesota Department of Health (MDH), routinely monitors for contaminants, including PFAS. While PFAS have been detected in local wells, previous levels were below MDH health guidance.

On April 10th, 2024, MDH informed the City that 7 of 8 wells had been flagged as potentially exceeding EPA thresholds. Upon further review with consultants and MDH, only one well had enough data to confirm it would exceed the new EPA limit—specifically for PFOA and PFOS, with thresholds set at 4 parts per trillion (ppt). Other wells contain a mix of PFAS compounds but currently lack sufficient data for final determination.

City Response

The City is taking proactive steps in accordance with EPA guidelines. This is not an emergency. There is no need to boil water or seek an alternate water source. If you have personal health concerns, please consult your physician. For questions about home filtration systems and PFAS, contact your product’s manufacturer.

More Information

For media inquiries, please contact Kelsey Gelhar, City Engineer, at 651-554-3219.

Last updated: June 23, 2025

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