As of Tuesday, June 10, 2025, the Pet Advisory will be removed for Hamblin Pond, Marstons Mills due to acceptable water quality samples.
As of Tuesday, June 10, 2025, all Barnstable monitoried ponds were found to be acceptable; thus there are no current water quality advisories.
As a reminder, Barnstable County has partnered with the Association to Preserve Cape Cod (APCC), a local non-profit environmental organization, to proactively monitor Cape Cod’s ponds for cyanobacteria and, more specifically, the toxins they sometimes produce. For more specifics regarding the particulars of the monitoring program, please visit APCC’s Cyanobacteria Monitoring Map at: https://apcc.org/our-work/science/community-science/cyanobacteria/