The North Carolina Department of Environmental Quality’s Division of Water Resources (DWR) has issued a reminder to the public to exercise caution around discolored water, which may indicate the presence of an algal bloom. This advisory comes as summer temperatures rise.
Algae are naturally found in all bodies of water, but certain conditions can lead to rapid growth and result in algal blooms. Factors contributing to these blooms include increased nutrients like nitrogen and phosphorus, high temperatures, more sunlight, and stagnant water flow. Algal blooms may appear as surface scums resembling spilled paint or as dense mats floating on the water. They can also cause discoloration throughout the water column and are subject to movement by wind and waves. Decaying algae might emit a strong odor affecting large areas.
Some algae produce toxins that pose health risks to humans, pets, and aquatic life. Such harmful algal blooms (HABs) cannot be identified by appearance alone. 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 or ingesting affected water.
“Remember: When in doubt, stay out,” is the advice given by DPH.
DPH recommends several precautions:
– Keep children and pets away from bright green, blue, discolored, or scummy water.
– Avoid touching large algae mats.
– Do not handle or consume dead fish found nearby.
– Wash thoroughly if contact with an algal bloom occurs.
– Rinse pets exposed to an algal bloom with clean water.
– Seek medical attention if a child appears ill after exposure to affected waters.
– Obtain veterinary care immediately if a pet shows signs such as stumbling or collapsing after being in affected waters.
The public is also reminded that other microorganisms or pollutants could be present in recreational waters leading to illness.
To report an algal bloom, individuals can contact their nearest DEQ regional office or submit reports online. Information on reported events is available on DWR’s Fish Kill & Algal Bloom Dashboard.
