A watershed is determined to be impaired if it is not meeting applicable water quality standards (Florida Administrative Code 62-302). This assessment, known as the Impaired Waters Rule (IWR) assessment (Florida Administrative Code 62-303), is conducted by the Florida Department of Environmental Protection (FDEP) every two years beginning in 2021.  Prior to this, IWR assessments were conducted every 5 years.

Collier County currently has 21 WBIDs (Water Body IDentification) out of 57 that are impaired for various parameters.  That means that 21 WBIDs are failing to meet a specific water quality standard.  Some water bodies are impaired for more than one parameter.  Click on the map below to see the impaired water bodies.

Once a water body has been determined to be impaired, the FDEP will then establish a Total Maximum Daily Loads (TMDLs) which limits the amount of the pollutant causing impairment that can be discharged into the water body. Statewide TMDL development is prioritized using FDEP's priority framework document.  

Find out if my watershed is impaired (enter your address). 

Contact us to learn what you can do to improve water quality. 

Capital Project Planning, Impact Fees, and Program Management Division

Capital Project Planning Building
2685 Horseshoe Drive S, Ste. 103
Naples, FL 34104
Phone: (239) 252-2502

Updated 09/09/2024