How It Works

  1. Great Pond Foundation scientific staff collect & analyze environmental and cyanobacteria data weekly
  2. Data and analyses are sent to Island Boards of Health for review
  3. Island Boards of Health use Massachusetts and EPA recreational limits and issue public health recommendations
  4. MV CYANO releases coordinated color-coded maps indicating the cyanobacteria bloom risk level and associated recommendations as seen on the right –>
  5. Signage will also be posted along pond shores if YELLOW, ORANGE, or RED risk levels are present.