Total Maximum Daily Load
Non-Point Source Water Pollution Control
Alaska's 303(d) List of Impaired Waters
Water Quality Monitoring Assessment and Reporting
What is a TMDL?
A TMDL is a process through which pollution sources are identified. The study analyzes pollution sources of a waterbody and calculates the amount or 'load' of that specific pollutant that the water can receive and still maintain Water Quality Standards. TMDLs are a necessary first step toward waterbody recovery and are required for a waterbody to be 'de-listed' from the Alaska 303(d) Category 5 Impaired Waters List. A waterbody can also be taken off the list if other controls are in place to assure the recovery of the waterbody.