wedge pond

Wedge Pond is screened weekly for Cyanobacteria by The Mystic River Watershed Association using a fluorometer and looking for visual signs of bloom.  The Winchester Health Department is alerted of any concerns and issues an advisory based on elevated levels.  If necessary will work with the Massachusetts Department of Public Health on further pond water analysis.

Blue-Green Algae and E Coli Bacteria can occur in Wedge Pond.  

How can you help minimize it?

  • Pick up dog waste and dispose properly 

  • Limit use of fertilizers in yards and spaces surrounding pond 

  • Do not feed ducks and geese

What is Blue-Green Algae and E Coli Bacteria?

Blue-green algal blooms

Blue-green algal blooms are a major hazard to water supplies as well as potentially dangerous to human, animal and fish health.  Blue-green algae are actually types of bacteria known as Cyanobacteria. They normally look green and sometimes may turn bluish when scums are dying.

’Bloom’ is the term used to describe an accumulation of algal cells to a point where they discolor the water, form scums, produce unpleasant tastes and odors, affect fish populations and reduce the water quality. 

E Coli Bacteria

Escherichia coli or E. coli is a type fecal coliform bacteria that is commonly found in the intestines of animals and humans. E. coli in water is a strong indicator of sewage or animal waste contamination. Sewage and animal waste can contain many types of disease causing organisms. 

  • Consumption may result in severe illness
  • Children under five years of age, those with compromised immune systems, and the elderly are particularly susceptible

U.S. Environmental Protection Agency