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Committee hears update: PFAS pilot at Still River well showing 'no detect' in effluent
Summary
Staff described a PFAS pilot test on the Still River well that currently shows PFAS at 'no detect' in effluent; pretreatment to remove iron was added because iron fouls the PFAS media. The pilot will continue several months to determine viability.
Unidentified Speaker 6 updated the committee on the PFAS pilot program at the Still River well, reporting that the treatment columns are removing PFAS to a no‑detect level in the effluent so far. "We're going from… they're showing a no detect in the effluent of the water," Speaker 6 said, adding that the project team added a pretreatment column to remove iron that otherwise fouls the media and shortens bed life.
Speaker 6 said the contractor is currently responsible for handling spent media; options discussed include incineration or landfill retention at a designated facility. Staff estimated a pilot duration of roughly nine months, extending into early spring, after which they will assess whether the treatment approach is suitable for larger‑scale use.
Committee members asked about media life, disposal, and the relative costs of treatment media versus building and engineering. Speaker 6 said building and engineering are the larger expenses and that staff aims to fit treatment equipment into the existing building footprint where practical.
