In response to concerns over per- and polyfluoroalkyl substances (PFAS) contamination, the City of Stillwater has undertaken significant measures to ensure the safety of its drinking water. PFAS, often referred to as ‘forever chemicals’ due to their persistence in the environment, have been detected in some of the city’s wells.
Construction of PFAS Treatment Facility
To combat this issue, Stillwater initiated the construction of a PFAS treatment facility at Well #10. The project, which began in mid-September, has seen substantial progress, including the installation of new sanitary sewer manholes, raw and finished water piping connections, and concrete footings for the treatment building. Despite winter conditions, the project remains on track, with the facility expected to be operational by May 2026. This temporary solution aims to safely reintegrate Well #10 into the city’s water supply system.
Comprehensive PFAS Investigation
Beyond immediate remedies, the city is collaborating with the Minnesota Pollution Control Agency (MPCA) to identify potential PFAS sources. Starting in May 2025, the MPCA plans to sample water and soil throughout Stillwater, including private wells, to determine contamination sources and assess risks. Residents with private wells may be contacted for sampling, and those with PFAS levels exceeding safety standards will be eligible for treatment provided by the MPCA.
Commitment to Long-Term Solutions
While the Environmental Protection Agency’s (EPA) new PFAS standards take effect in 2029, Stillwater is proactively working to meet these guidelines by 2027 or sooner. The city has evaluated various mitigation options and determined that constructing water treatment facilities using granular activated carbon (GAC) technology is the most effective approach. This long-term solution reflects Stillwater’s dedication to providing safe, high-quality drinking water for its residents.
For ongoing updates and more information, residents are encouraged to visit the city’s official website or contact the Public Works Department directly.