Lake Elmo has shut down a municipal well and one of its water towers — perhaps permanently — after the state Health Department found excessive levels of an industrial chemical known as PFCs in the water.
Lake Elmo City Administrator Kristina Handt said the Health Department notified city public works officials on Monday that testing on the well over the past four quarters found excess perfluorochemicals (PFCs) and that the city needs to lower those levels.
Officials in the Washington County suburb took well No. 1, which primarily serves the Old Village area of the city, and water tower No. 1 offline on Tuesday. To compensate, the city said water pressure will be increased in two other wells.
In the meantime, Mayor Mike Pearson assured residents that the city's water is safe to drink.
The Lake Elmo case marks the seventh time that wells or water towers in the Washington County suburbs have been taken offline because of contamination by PFCs, a compound that the 3M Co. produced and discharged for several decades at nearby facilities. Four of the previous incidents occurred in Cottage Grove and two in Oakdale, according to the Health Department.
Those wells, however, are still being used on a limited basis, said Health Department spokesman Doug Schultz.
Pearson said Lake Elmo's well and tower are offline indefinitely, and that the well could get shut down for good.
Schultz said the water tower was shut down because it receives water from the neighboring well No. 1 and not because it was directly contaminated by PFCs.