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Water: Basics

NPDES Permit Program Basics

This section of this website contains basic information on the major features and elements of the NPDES permit program. The information in this section will be most useful to state and tribal officials, interested citizens, and others with an interest in the details of the NPDES program. This information is broadly applicable to all NPDES permits and programs, including  concentrated animal feeding operations (CAFOs)pesticide discharges, combined sewer overflows (CSOs), pretreatment, sanitary sewer overflows (SSOs), stormwater and whole effluent toxicity (WET).

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NPDES General Permit Inventory


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