The following water quality updates have been issued for Tuesday, August 29, 2023:

  • A Pet Advisory is posted for Long Pond, Marstons Mills due to thin scum accumulations in the near shore areas consisting of cyanobacteria

Current postings as of Tuesday, August 29, 2023:

Public Health AdvisoryPublic Health Advisory

Parker Pond, Osterville








Cyanobacteria Pet Advisory

Pet Advisory

Long Pond, Marstons Mills

Lovells Pond, Cotuit






If you are interested in receiving more information about Cyanobacteria and locations monitored, you may view the 2023 Cyanobacteria Monitoring Map at

If you are interested in receiving email notifications when there is a potential toxic bloom identified by Association to Preserve Cape Cod (APCC), you may opt-in by clicking this link: where you will be asked to enter your email address in order to receive cyanobacteria alerts.

Thomas A. McKean, RS, CHO
Director of Public Health