What is the difference between a general permit and an individual permit under the NPDES program?

What is the difference between a general permit and an individual permit under the NPDES program?

• A. A general permit covers multiple similar dischargers; an individual permit is tailored to a specific facility with unique conditions
• B. A general permit covers only one facility; an individual permit covers multiple facilities
• C. General permits are voluntary; individual permits are mandatory
• D. General permits are for water supply; individual permits are for wastewater

Answer: (A)

Under the NPDES program, a general permit is issued to cover a group of dischargers whose discharges are alike, using a single set of effluent limits and monitoring requirements that apply to all facilities in that group. An individual permit is written for one specific facility and reflects its unique conditions—such as its actual pollutant loads, receiving-water characteristics, and pretreatment considerations—resulting in facility-specific limits and conditions. This distinction explains why general permits streamline regulation for many similar dischargers, while individual permits provide the precision needed for a single facility. The other statements don’t fit: a general permit does not cover only one facility, general permits aren’t voluntary, and both types can apply to wastewater discharges (not exclusively to water supply).

Under the NPDES program, a general permit is issued to cover a group of dischargers whose discharges are alike, using a single set of effluent limits and monitoring requirements that apply to all facilities in that group. An individual permit is written for one specific facility and reflects its unique conditions—such as its actual pollutant loads, receiving-water characteristics, and pretreatment considerations—resulting in facility-specific limits and conditions. This distinction explains why general permits streamline regulation for many similar dischargers, while individual permits provide the precision needed for a single facility. The other statements don’t fit: a general permit does not cover only one facility, general permits aren’t voluntary, and both types can apply to wastewater discharges (not exclusively to water supply).