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New Source Performance Standards (NSPS) are pollution control standards issued by the United States Environmental Protection Agency (EPA). The term is used in the Clean Air Act Extension of 1970 (CAA) to refer to air pollution emission standards, and in the Clean Water Act (CWA) referring to standards for water pollution discharges of industrial wastewater to surface waters.
EPA periodically publishes a list of ongoing and new regulation projects, and a list of categories that it is considering for regulation, in its "Effluent Guidelines Program Plan." Program Plan 15, published in January 2023, announced several regulatory and research projects.
Beginning in the 20th century, designers of industrial and municipal sewage pollution controls typically utilized engineered systems (e.g. filters, clarifiers, biological reactors) to provide the central components of pollution control systems, and used the term "BMPs" to describe the supporting functions for these systems, such as operator training and equipment maintenance.
The Hyperion Wastewater Treatment Plant in Los Angeles, California, is one of the largest municipal plants in the United States. Sewage treatment systems in the United States are subject to the Clean Water Act (CWA) and are regulated by federal and state environmental agencies.
As of 2021, the EPA has approved 47 states to administer all or portions of the permit program. [142] EPA regional offices manage the program in the remaining areas of the country. [141] The Water Quality Act of 1987 extended NPDES permit coverage to industrial stormwater dischargers and municipal separate storm sewer systems. [143]
EPA promotes "compliance assistance" as an enforcement technique, and has developed sector-specific assistance centers for various industries. [26] EPA and authorized state agencies perform periodic inspections of some discharging facilities. The states are responsible for enforcing the permit requirements that they have issued.
EPA efforts to promote prevention practices include waste permitting procedures, revisions to regulations, technical assistance to industry and government agencies, and enforcement. The agency also makes efforts to link pollution prevention to public information about chemicals, such as in the TRI program.
Solid Waste Tree, Based on Resource Conservation and Recovery Act, United States Environmental Protection Agency. Solid waste means any garbage or refuse, sludge from a wastewater treatment plant, water supply treatment plant, or an air pollution control facility and other discarded material, including solid, liquid, semi-solid, or contained gaseous material resulting from industrial ...