The Rhode Island Department of Health (RIDOH) and the Rhode Island Department of Environmental Management (DEM) have issued a warning for Olney Pond in Lincoln and extended an advisory for Waterman Reservoir in Glocester following confirmation of a cyanobacteria bloom. Cyanobacteria, also known as blue-green algae, are naturally found in water but can form harmful algae blooms (HABs) under certain conditions.
The agencies advise against swimming, fishing, boating, or kayaking in these areas due to health risks. “Swimming, fishing, boating and kayaking, is high risk to health and should be avoided at these locations. HABs can produce toxins which can be harmful to humans and animals,” according to the joint statement from RIDOH and DEM.
Officials urge caution throughout both waterbodies since HABs can shift locations within ponds and lakes. Residents are warned not to drink untreated water or eat fish from affected waters. Pet owners should prevent pets from drinking or swimming in these areas.
Contact with contaminated water may cause irritation of the skin, nose, eyes, or throat. Ingesting the water could lead to symptoms such as stomachache, diarrhea, vomiting, and nausea. Less common effects include dizziness, headache, fever, liver damage, or nervous system issues. Young children and pets face higher risks because they are more likely to ingest contaminated water. Those experiencing symptoms after contact should consult a healthcare provider.
Guidance provided includes rinsing skin immediately with clean water if exposed; showering and washing clothes upon returning home; washing pets with clean water if they were exposed; contacting a veterinarian if pets show signs of illness such as tiredness or vomiting within a day; and calling a healthcare provider if feeling unwell after exposure.
Affected waters may appear bright to dark green with thick floating algae that resembles green paint or pea soup. People are advised to avoid any body of water that looks like this.
Suspected cyanobacteria blooms can be reported by contacting DEM’s Office of Water Resources at 401-222-4700 Press 6 or emailing DEM.OWRCyano@dem.ri.gov with photographs if possible. More information along with current advisories is available on the Freshwater Cyanobacteria Tracker Dashboard at www.dem.ri.gov/bluegreen
