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PFAS in Groundwater

The final Conceptual Drinking Water Supply Plan, released in August, provides safe, sustainable drinking water to the 14 East Metro communities affected by PFAS now and into the future. Each of the 14 communities received a tailored project list based on their needs, community feedback and cost estimates.

Additional information

For more information on the final drinking water supply plan, visit the 3M PFAS Settlement site.

If you have questions, contact

Review the Conceptual Drinking Water Supply Plan webpage

Temporary water treatment plant 
The City of Woodbury’s temporary water treatment plant began operating in June 2020. The facility, located near the intersection of Valley Creek Road and Tower Drive, is treating water from four wells to meet water quality standards and guidelines for per- and polyfluoroalkyl substances (PFAS) using granular activated carbon. 

Permanent water treatment plant
In late August, the city purchased a parcel of land south of Hargis Parkway and east of Radio Drive for future construction of a permanent water treatment facility.

Learn more about the permanent water treatment plant

About PFAS
The 3M Company made PFAS at its Cottage Grove facility from the late 1940s until 2002. PFAS wastes were disposed of at multiple sites in Washington County. The source of the PFAS in Woodbury’s groundwater has been identified as these disposal sites.

Funding for the Woodbury temporary water treatment plant is provided through the 2018 settlement agreement between the State of Minnesota and 3M. This arrangement includes a $40 million provision for temporary facilities meeting the requirements of the 2007 settlement agreement between the same two parties.

If you have questions about the city’s water system and the impact of PFAS, contact Public Works at 651-714-3720 or

PFAS Resources

Learn more about PFAS in groundwater

PFAS Monitoring Results in Woodbury's municipal wells

MDH Well Health Risk Advisory Map

Remediation Activities
In 2011, the Minnesota Pollution Control Agency (MPCA) completed remediation activities at these sites to reduce the amount of pollutants released from these sites in the future.

3M, under direction from the MPCA, continues active site remediation. For the Woodbury site, remaining contamination is captured by pumping approximately 1.25 billion gallons of water annually to a treatment plant and discharging it to the Mississippi River.

Visit the MPCA website for more information about the remediation activities.

Private Water Supply Wells
As a result of the EPA’s new guidance and MDH updated HBV for PFOA and PFOS, MDH is sampling private wells within Washington County and will issue additional drinking water advisories as needed. Until their private wells are tested, residents who have concerns about their health can take steps to reduce their potential exposure to PFAS. Information on point-of-use filters and other steps people can take in their homes can be found on the MDH website.

Private water well owners or residents interested in treating the water after it reaches their home can learn about home treatment options at

Residents who have questions about their private water supply well and whether it is impacted by this change should contact MDH.

Archived Updates

Dec. 11, 2020 Update: Draft Conceptual Drinking Water Supply Plan announced

Aug. 18, 2021 Update: Statement from Mayor Anne Burt: State's release of long-term water supply plan for east metro

June 12, 2020 Update: Temporary treatment facility nears completion

April 13, 2020 Update: Increased water restrictions likely until temporary treatment facility is complete

March 4, 2020 Update: MPCA and DNR listening and information sessions presentation

Feb. 21, 2020 Update: Seventh Woodbury well has PFAS levels above water quality limits

Jan. 8, 2020 Update: City begins work on temporary water treatment facility

Oct. 24, 2019 Update: Public Meeting held at Woodbury High School

Oct. 18, 2019 Update: Sixth Woodbury Well has PFAS levels above health risk limit

Aug. 28, 2019 Update: Expedited project awarded to and accepted by Woodbury

April 3, 2019 Update: Minnesota Department of Health issues new Health-Based Guidance Values

March 2, 2018 Update: $850 million settlement provides funding for cleaning up drinking water