Aquatic Pesticide Application
Regulates the use of chemicals proposed for introduction into the waters of the state, whether public or private, for control of aquatic organisms. These organisms are usually aquatic weeds or algae, but could include mosquitoes or unwanted fish. Applications are evaluated for the potential of causing unreasonable adverse effects to human health or the environment. Only chemicals registered for aquatic sites may be used.
Useful Links
Aquatic Pesticide Application Fact Sheet Nuisance Aquatic Vegetation Management: A Guidebook
Application for Use of Pesticides in State Waters
Instructions for completing an application for use of pesticides in state waters
Other Required Common Forms
Applicant Compliance Form Instructions
Request for Natural Diversity Database (NDDB) Review Instructions
Land Management Request for State Owned Land or Water Instructions
Re-introduction of Pesticides into State Waters
This application should be submitted in years 2 and 3 of multi-year permits.
Re-introduction of pesticides into State Waters Application Instructions
- Re-introduction of Pesticides into State Waters Application
- Re-introduction of Pesticides into State Waters Application
Aquatic Permit Holder Year End Report
Other information
Memorandum of Agreement with Department of Public Health and Department of Energy and Environmental Protection on the use of pesticides within public water supply areas and near public water supply wells
Summaries of Methoprene/Resmethrin Use to Control Mosquitoes in the Coastal Areas
General permit for the use of aquatic pesticides (pending)
Recordings of stakeholder meetings
- Businesses and Permittees (11/14/2023)
- Environmental Interests (11/14/2023)
- Municipalities and Lake Associations (11/16/2023)
For more information, please contact The Pesticide Management Program at DEEP.PesticideProgram@CT.gov.
Content last updated November 21, 2023.