) The CWA generally prohibits discharge of a pollutant into a water of the U.S. unless: the polluter pays a fee to the government based on the amount of pollutant

discharged per year. the polluter conducts a TMDL study showing their pollution will not cause eutrophication. the polluter obtains a NPDES permit before discharging and remains in compliance with permit conditions. the polluter obtains a Title V permit before discharging and remains in compliance with permit conditions.