As temperatures increase, the N.C. Department of Environmental Quality’s Division of Water Resources (DWR) is advising the public to steer clear of discolored water that may signal an algal bloom. These blooms can produce toxins harmful to humans, pets, and aquatic life.
The DWR highlights that not all algal blooms are harmful, but it’s impossible to determine this by sight alone. To report such occurrences, individuals should contact their nearest DEQ regional office or file a report online. The DWR’s Fish Kill & Algal Bloom Dashboard provides information on reported events.
Algae naturally occur in waterbodies; however, certain conditions can accelerate their growth into blooms. Factors include increased nutrients like nitrogen and phosphorus, higher temperatures, more sunlight, and stagnant water flow. Algal blooms manifest as surface scums resembling spilled paint in colors like green, red, brown or blue; they can also form dense mats floating on the surface or cause discoloration throughout the water column. Wind and waves often move these blooms around. Decomposing algae may emit strong odors affecting large areas.
The N.C. Department of Health and Human Services Division of Public Health (DPH) advises avoiding contact with significant algae accumulations and preventing children and pets from swimming in affected waters: “When in doubt, stay out.”
To protect against algal blooms:
– Keep children and pets away from bright green, blue, discolored or scummy water.
– Do not touch large algae mats.
– Avoid handling dead fish found near blooms.
– Wash thoroughly if you come into contact with an algal bloom.
– Rinse pets exposed to a bloom with clean water.
– Seek medical care if a child appears ill after exposure.
– Get veterinary care if a pet shows signs of distress after being in affected waters.
The DPH also cautions about other potential contaminants in recreational waters that could cause illness.
For further details on algal blooms visit the DWR website; for health-related concerns visit the DPH website.
