In recent years, the City of Stillwater has been proactive in addressing concerns related to per- and polyfluoroalkyl substances (PFAS) in its water supply. PFAS are a group of human-made chemicals found in various products, and their presence in drinking water has raised health concerns nationwide.
Understanding PFAS in Stillwater
Stillwater’s drinking water is sourced from the Prairie Du Chien-Jordan and Jordan aquifers through eight wells. The city serves approximately 20,600 residents, delivering an average of 2.05 million gallons of water daily. Regular testing has been conducted to monitor PFAS levels, ensuring they remain within safe limits.
Recent Testing and Results
In 2025, the Minnesota Pollution Control Agency (MPCA) initiated an investigation to identify potential PFAS sources in Stillwater. This included sampling private wells and public water systems. The findings indicated that while some wells showed detectable PFAS levels, they were below the health-based guidance values set by the Minnesota Department of Health (MDH). These values are designed to protect even the most vulnerable populations over a lifetime of exposure.
City’s Response and Future Plans
Upon learning of PFAS detections, the city took immediate action by discontinuing the use of affected wells and implementing treatment solutions. The MPCA’s ongoing investigation aims to pinpoint the exact sources of PFAS contamination, with plans to sample water and soil throughout Stillwater. Residents with private wells may be contacted for sampling to ensure comprehensive monitoring.
The city remains committed to transparency and public safety. Residents are encouraged to stay informed through official city communications and to participate in community meetings addressing water quality concerns.
Health Implications and Safety Measures
Consuming water with PFAS levels above health-based guidance values can pose potential health risks, including immune suppression, lower birth weights, and increased risk of certain cancers. However, the current PFAS levels in Stillwater’s water supply are below these guidance values, indicating minimal risk to residents. The city continues to work closely with state agencies to monitor and address any emerging concerns.
For more information or to report concerns, residents can contact the Stillwater Public Works Department or visit the city’s official website.