MV CYANO
Current Monitoring
Select a pond to view the latest data
Pond List
All sites sampled are indicated with colored dots. Please note the date, as data and sampling locations can vary.
Understanding the Reports
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Key
Curious about your own pond?
Services
LAB HOURS
Bring samples in or schedule a site visit:
MONDAY – THURSDAY
9am – 1pm
Email mvcyano@greatpondfoundation.org if you have any questions or would like a service!
Cyanobacteria Sample Testing
Bring in a sample & we analyze!
GPF offers sample analysis for water samples collected by property owners/managers.
Sampling kits are available for pickup from our office and include instructions for proper sample collection. Once returned to our laboratory, samples are analyzed for the presence of cyanobacteria, and results are provided to help inform management and recreational decisions.
We ask that you take plenty of images of the site & potential bloom!
Site Visit & Sample Collection
We come to you!
For a more comprehensive evaluation, GPF staff can visit your pond to collect water samples and assess current conditions.
During the site visit, our team will collect environmental and water quality data, document observations, and evaluate the extent of cyanobacteria presence.
Site assessments are ideal for those seeking professional sample collection, additional environmental context, and expert guidance.
2025 Season Data Presentation
2024 Season Data Presentation
2023 Season Data Presentation
Past Data
About MV CYANO
MV CYANO is a collaborative initiative among Island Boards of Health and scientists from Great Pond Foundation to monitor cyanobacteria on Martha’s Vineyard.
Cyanobacteria, a.k.a. blue-green algae, are a group of microorganisms found in all Vineyard waters. When cyanobacteria grow rapidly or bloom, they can produce cyanotoxins, which when concentrated, can cause adverse health effects in humans, pets, or livestock who wade in or ingest blooming waters.
Our Partners
This program was developed through a collaboration of Island Boards of Health
- Town of Edgartown
- Town of Chilmark
- Town of West Tisbury
- Town of Tisbury
- Town of Oak Bluffs
- Dukes County
- Inter-Island Public Health Excellence Collaborative
With scientific and financial support provided by
- Great Ponds Foundation
- Chilmark Pond Foundation
- Edey Foundation
In Case of Emergency
If you have come into contact with a cyanobacteria bloom and are having adverse health symptoms, please contact your physician immediately. Please also follow up with your local board of health.
If your pet or livestock has come in contact with a cyanobacteria bloom, please contact your veterinarian immediately. Please also follow up with your local board of health.
For blooms in Edgartown Great Pond, Crackatuxet Pond, Sengekontacket Pond, or within the Town of Edgartown:
Brice Boutot, Edgartown Board of Health Agent | p: 508.627.6120 | e: healthagent@edgartown-ma.us
For blooms in Tisbury Great Pond, or within the Towns of West Tisbury and Chilmark:
Alex Lam, West Tisbury Board of Health Agent | p: 508.696.0105 | e: boh@westtisbury-ma.gov
For blooms in Chilmark Pond, or within the Town of Chilmark:
Anna McCaffrey, Chilmark Board of Health Administrator | p: 508.645.2105 | e: boh@chilmarkma.gov
For blooms in Sengekontacket Pond, or within the Town of Oak Bluffs:
Alexa Arieta, Oak Bluffs Board of Health Agent | p: 508.693.3554 ex127 | e: aarieta@oakbluffsma.gov.
For blooms in Lake Tashmoo, or within the Town of Tisbury:
Drew Belsky, Tisbury Board of Health Agent | p: 774.563.3870 | e: dbelsky@tisburyma.gov
For blooms within the Town of Aquinnah:
Marina Lent, Aquinnah Board of Health Agent | p: 508.645.2309 | e: health-agent@aquinnah-ma.gov