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County planners present water-resources chapter; well sampling finds plumbing-linked lead and emerging nitrate concerns
Summary
Marathon County staff reviewed Chapter 6 of the comprehensive plan, reporting well-sample results that showed lead in 15% of samples—primarily linked to household plumbing—and evidence of widespread nitrate contamination that may rise with further sampling. PFAS and testing funding were also discussed.
Planning staff presented Chapter 6 (Water Resources) of Marathon County's comprehensive plan draft and highlighted preliminary results from last year's private-well sampling.
Laurie Kimmons of CPZ said the county's initial well-sample snapshot found lead detected in 15% of tested wells but that follow-up testing indicated the lead detections were often related to household plumbing rather than source water. "Lead came back as a contaminant in 15% of those samples," Kimmons said. "But in our follow-up testing, we actually found that was predominantly related to…
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