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Trustees update public on cyanobacteria readings; Suffolk County issues notice for Pond Lane Pond
Summary
Trustees reported recent cyanobacteria readings: Swan Pond at 521 µg/L (high), Pond Lane Pond at 32 µg/L (above the 25 µg/L reporting threshold), and Hook Pond down to 4.9 µg/L; staff said signs remain posted and will verify placement.
Staff reported the latest cyanobacteria (blue‑green algae) monitoring results for local ponds. "Swan Pond is pretty high actually, 521 micrograms," one trustee said; Pond Lane Pond measured 32 micrograms per liter (just above the 25 µg/L reporting cutoff), and Hook Pond's most recent reading was 4.9 µg/L. Suffolk County reportedly issued a notice for Pond Lane Pond based on the readings.
Trustees said signs were placed at both ponds last year and asked staff to verify that postings remain in place. They will continue to track weekly readings and coordinate with Suffolk County on any public‑health advisories. No closures were recorded during the meeting; trustees noted readings fluctuate with weather and runoff.
