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Health department to post PFAS test results in property files; map shows clusters in Madaket and elsewhere
Summary
Health department staff said PFAS sampling results and property files will be posted online and presented a map showing clusters of detections above Massachusetts’ reportable concentration; MassDEP guidance and thresholds (20 ng/L reporting, 90 ng/L imminent hazard) will guide next steps.
The Nantucket Health Department announced it will begin publishing PFAS well‑testing results in town property files and posted a map showing where the department’s voluntary and private‑well samples exceed Massachusetts’ reportable concentration.
Andrew Shapiro, Health Department staff, told the Board of Health that MassDEP has assigned a release‑tracking number for the island‑wide PFAS investigation and that MassDEP recommended the local analyses use the state reportable concentration of 20 nanograms per liter (ng/L) for the PFAS‑6 sum. Shapiro said the department found more than 100 previously unreviewed MassDEP samples during coordination with state staff.
Shapiro said the health department has received 84…
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