A seventh well has been taken offline in Woodbury after testing showed it exceeded PFAS health parameters set by the Minnesota Department of Health.

The well was removed from service Feb. 3 after the city received a call from MDH stating that a health advisory would be issued on the well. The city received official notice of the health risk advisory Feb. 21.

[JARGON WATCH: Perfluoroalkyl substances (PFAS), also called perfluorochemicals (PFCs), are chemicals used in products such as stain-resistant fabric, food wrappers, nonstick cookware and foam used to extinguish fires, according to the Minnesota Department of Health. The chemicals do not break down in nature and have been detected in Minnesota groundwater. Laboratory studies on animals have linked the chemicals to reproductive problems, immune system effects and increased cholesterol, according to the Environmental Protection Agency. Certain PFAS chemicals are no longer manufactured in the United States according to the EPA.]

In October 2019, a sixth well in the city was taken offline, at which time it was indicated that the seventh well was nearing levels requiring it to be taken out of service.

Of Woodbury’s 19 municipal wells, water from seven wells now have detectable levels of PFAS that exceed one or more thresholds established by the MDH.

PREVIOUSLY: Woodbury declares local emergency over PFAS

The Minnesota Pollution Control Agency and Department of Natural Resources will be holding two information sessions from 2-4 p.m. and 6-8 p.m. on drinking water supply options in the coming weeks:

  • Thursday, Feb. 27, Cottage Grove City Hall

  • Wednesday, March 4, Prestwick Golf Club in Woodbury