This volume of the water quality program mainly deals with the National Pollutant Discharge Elimination System. National Pollutant Discharge Elimination System" or "(NPDES)" means the national program for issuing, modifying, revoking and reissuing, terminating, monitoring and enforcing permits for the discharge of pollutants into waters of the state. An industrial user, whether or not the user is subject to other categorical pretreatment standards or any national, state, or local pretreatment requirements, shall not introduce into publicly or privately owned treatment works any pollutant(s) which, alone on in conjunction with a discharge or discharges from other sources, cause pass through or interference or in any other manner adversely impact the operation or performance of the treatment works, to include the method of sludge disposal in use by the publicly or privately owned treatment works.
No person shall discharge pollutants into waters of the state without first having obtained a valid NPDES permit or coverage under a valid General NPDES Permit. Permit discharge limitations, standards and prohibitions shall be established for each discharge point from the facility, except where limitations on internal waste streams are more appropriately used.
The article also states rules for groundwater underground injection- permit requirements, prohibited actions and construction guidelines. Waste treatment requirements are stated for industrial waste discharges, sewage treatment plants, and combined waste treatment plants. Specific water quality criteria are stated for outstanding Alabama water, public water supply and specific lakes and river basins.