Prohibited discharge standards

All permit effluent limitations, standards, and prohibitions, including those necessary to achieve water quality standards, will be stated as maximum daily and average monthly discharge limitations for all dischargers. 

All pollutants limited in a discharger s permit will have limitations, standards, or prohibitions expressed in terms of mass except ... 

Water-pollution laws in the United States, since adoption of the Glean Water Act of 1972, begin with the baseline standard that the discharge of any pollutant by any person into any navigable waterway, or tributary flowing into a navigable waterway, is prohibited. Since immediate adherence to this standard could prove physically and economically infeasible, the law then provides that any exception must be authorized by a permit, issued under the National... 

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