With continued warm air and water temperatures, the City of Centralia will once again be applying a commercial algaecide known as EarthTec® at Lake Centralia on Tuesday, July 26th, to prevent the growth of nuisance algae and “blue-green algae” blooms.
This product is registered with US EPA as an approved algaecide and bactericide. The liquid product will be spray-applied to the water surface. The application rate is intended to yield approximately 0.1 parts per million Copper ions into the top 2 ft. of the water column. The Copper inhibits the growth of nuisance algae and “blue-green algae”.
The 0.1 parts per million Copper dosage is far below the maximum 1 part per million copper dosage for this purpose. The Copper dosage is not considered to be harmful to humans or fish.
The City anticipates applying the algaecide on multiple occasions depending on water quality parameters such as pH and dissolved oxygen concentration, in addition to observing visual conditions.
For more information, please contact the City Manager’s Office at 618-533-7623.
