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Frequently Asked Questions

Per- and polyfluoroalkl substances (PFAS) were made and used by several companies around the world in household and industrial products such as stain repellents, lubricants, fire retardant and suppressants, and more. The 3M Company
made PFAS at its Cottage Grove facility from the late 1940s until 2002.

PFAS wastes were disposed of at several sites in Washington County including locations in Lake Elmo, Oakdale and in southern Woodbury near Woodbury Drive (3M Woodbury site). The source of the PFAS in our groundwater has been identified as these disposal sites and the manufacturing facility in Cottage Grove.

View a timeline of PFAS activity in Woodbury

Below is a list of frequently asked questions about PFAS.

What is PFAS and how did it get in the water?

Can I drink the water?

I have a private well. How do I know if I am impacted by PFAS?

How many Woodbury municipal wells exceed PFAS water quality standards and guidelines?

Which well is serving my home?

How much will the temporary treatment plant cost and how will the project be funded?

When will the temporary water treatment plant be operational?

What type of private, at-home treatment options are available?

Why was the temporary treatment plant constructed near Valley Creek Road and Tower Drive?

Will the construction of the temporary water treatment plant impact the nearby Tamarack Nature Preserve?

I didn't know PFAS was in the water or that a temporary water treatment plant was under consideration. Where can I learn more?

What is the long-term solution on treatment for PFAS and when will it be implemented?

Who will pay for the long-term solution for treatment of PFAS?