New Water Quality Standards For Carbaryl

In the May 22, EPA released its final national recommended ambient water quality criteria for carbaryl-2012. The final document establishes pollutant levels for carbaryl in relation to aquatic life. EPA published the draft national recommended water quality criteria for carbaryl in November 2011 and provided the public an opportunity to comment. The Agency developed the aquatic life criteria based on EPA's Guidelines for Deriving Numerical National Water Quality Criteria for the Protection of Aquatic Organisms and Their Uses.

EPA's national recommended final acute and chronic ambient water quality criteria (AWQC) for protecting freshwater organisms from potential effects of carbaryl is 2.1 mg/L. For the protection of estuarine/marine organisms from potential effects of carbaryl, EPA is recommending a final acute AWQC of 1.6 mg/L. At the present time, there are insufficient data to calculate a chronic AWQC for estuarine/marine organisms.

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