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Marathon County committee rejects recommendation to lower fluoride standard after heated debate
Summary
The Health & Human Services Committee considered a resolution urging municipalities to adopt a more protective fluoride concentration and rejected it after a roll-call vote following an unsuccessful amendment to ban adding more fluoride.
The Marathon County Health & Human Services Committee voted down a resolution that would have recommended local water utilities adopt a default safety margin tied to the National Toxicology Program (NTP) findings on fluoride and child neurodevelopment.
The measure, introduced by Vice Chair Arstead, would have recommended water municipalities in Marathon County follow an EPA-style default margin that—using NTP hazard estimates—would translate to a fluoride concentration near 0.15 milligrams per liter, well below the commonly cited 0.7 mg/L. The resolution failed on a roll-call vote, 3 in favor and 4 opposed.
Committee members debated scientific evidence, local control, and municipal operations during an extended discussion. Vice Chair Arstead read historical and scientific materials compiled by supporters, saying fluoridation debates go back decades and citing recent NTP conclusions that found “moderate confidence in the evidence that estimated fluoride exposure is inversely associated with IQ in children.” Arstead also summarized a federal court ruling announced Sept. 24, 2024, in Food & Water Watch v. Environmental Protection Agency, and cited the NTP 2024 monograph as central to the legal and scientific context.
Supporters argued the committee should favor a conservative safety margin to protect pregnant people and formula-fed infants and requested the county recommend water utilities reduce added fluoride. Supervisor Stacy Marash’s written comments—read aloud by Arstead—asked the committee to “safeguard the health of the residents in Marathon County subjected to community fluoridated water without their consent, especially our most vulnerable being pregnant mothers and their children.” The resolution text asked municipalities to follow the EPA default margin of safety (a factor of 10) applied to the NTP hazard level of 1.5 mg/L, which would imply a recommended concentration near 0.15 mg/L.
Opponents said public-health organizations still support community fluoridation and emphasized local control. Supervisor Zhang cited a January 2025 letter from multiple dental organizations urging clarity from the EPA and reported that Wausau Water Works staff told her the city maintains fluoride at 0.7 mg/L, monitors levels daily, and uses corrosion-control measures to prevent lead leaching. Several supervisors said technical questions (corrosion control, contaminant batching, and dose monitoring) and the need for subject-matter experts made them reluctant to endorse the county-level recommendation.
The committee considered an amendment that would have directed municipalities to stop adding additional fluoride (leaving naturally occurring levels in place). The amendment was made by Supervisor Foote and seconded by Vice Chair Arstead; it failed on a roll-call vote (3 yes, 4 no). After further discussion the resolution as written was put to a roll-call vote and failed 3 in favor, 4 opposed.
Amanda Ostrowski, the interim health officer, told the committee staff could arrange expert briefings if the body wanted more technical input. Administrator Lance Leonard recommended staff return with subject-matter experts rather than the committee issuing a technical recommendation without additional expert review.
The committee did not adopt any direction to require municipal action; the failed resolution remains only a proposed recommendation. Several supervisors emphasized that municipalities retain local control over water treatment decisions and that the county has limited direct authority over municipal water utilities.
Votes at a glance
- Motion: "Pass the resolution recommending Marathon County water municipalities follow an EPA default safety margin related to fluoride concentration (committee text recommends ~0.15 mg/L based on NTP hazard level)." Mover: Vice Chair Arstead. Second: Supervisor Covelli. Outcome: Failed, tally recorded below. - Amendment: "Recommend Marathon County does not add any more fluoride to municipal water (leave natural fluoride in place)." Mover: Supervisor Foote. Second: Vice Chair Arstead. Outcome: Failed (3 yes, 4 no).
Roll-call vote on amendment (as recorded during the meeting): Boots (nay), Arstead (yes), Pavelli (yes), Conway (no), Foote (yes), Radke (no), Zhang (no).
Roll-call vote on final resolution (as recorded during the meeting): Boots (nay), Arstead (aye), Pavelli (aye), Conway (no), Foote (yes), Radke (no), Zhang (no).
The committee moved on to other agenda items after the vote; staff were not given direction to draft an alternative resolution or a formal county-level regulation.
