AFTER AN APPLICATION OF AQUATIC HERBICIDE, certain water-use restrictions may apply.
Often, the person who applies an aquatic herbicide is required to notify other water users and the general public before and after the fact. Often, the person who applies an aquatic herbicide places notices in the newspapers, and/or posts signs on sticks around the treated area. Often, herbicide applicators notify the public, whether they're required to notify the public or not.
Whatever the label says to do, including notifying others of water-use restrictions, then the aquatic herbicide user must do. The label is federal law.
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Livestock 1 day Irrigation non-crop 1-3 days Irrigation crop 5 days |
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Irrigation 7-25 days Potable water 7-25 days |
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Irrigation 14 days |
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on susceptible crops; otherwise, Irrigation 21 days Potable water 21 days |
As shown in the table above, there can be considerable variation among the required use-restriction periods for the various aquatic herbicides used in Florida.
Therefore, the need to use water from an area to be treated influences the choice of herbicide to be used.
For examples,
the table shows that there are no water use restrictions imposed after the use of copper for aquatic plant management. Swimming, drinking, fishing, irrigation and other uses all are allowed immediately. the table shows that when diquat is used, there are restrictions on drinking, livestock use, and irrigation; however there are no restrictions on fishing and swimming. the table shows that when endothall is used to manage aquatic plants. the table shows that when triclopyr is used in aquatic plant management, there are water-use restrictions imposed on drinking the water and using the water for irrigation. However, there are no restrictions for recreational use of the water, such as swimming, and there are no restrictions on consuming fish from treated water.
Thus, these legally required water-use restrictions may postpone or prevent the use of a herbicide in a particular multi-use water body.
This page was authored by Vic Ramey with research assistance from Sara Reinhart.
Data is from the APIRS
database.
Photography and graphics are by Ann Murray, Sara Reinhart and Vic Ramey.
DEP review by Jeff Schardt and Judy Ludlow.
A collaboration of the Center for Aquatic and Invasive Plants, University of Florida, and the Invasive Plant Management Section of the Florida Fish and Wildlife Conservation Commission.
