This document is intended to provide technical support to EPA in developing and establishing numeric water quality criteria for nutrients under the Clean Water Act (CWA) pursuant to Section 303(c)(4), in order to protect aquatic life in the State of Florida from acute and chronic effects of nutrient over-enrichment. This document constitutes scientific information regarding the development of numeric criteria for Florida's inland waters (rivers, streams, lakes) reflecting ambient concentrations of nutrients that are protective of aquatic life. The information provided herein does not substitute for the CWA or EPA's regulations; nor is this document a regulation itself. Thus, this document cannot and does not impose any legally binding requirements on EPA, States, Authorized Tribes, the regulated community, or any other party, and might not apply to a particular situation or circumstance. This document does not constitute a determination by the Administrator under CWA 303(c)(4)(B) that new or revised water quality standards are needed in the State of Florida.