Effluent Guidelines

Industrial Effluent Guidelines

Photos of industries

Effluent Guidelines are national standards for industrial wastewater discharges to surface waters and publicly owned treatment works (municipal sewage treatment plants). We issue Effluent Guidelines for categories of existing sources and new sources under Title III of the Clean Water Act. The standards are technology-based (i.e. they are based on the performance of treatment and control technologies); they are not based on risk or impacts upon receiving waters.

On this page:

Regulations Under Development

Industry Studies

Existing Regulations Being Studied for Possible Revisions

Existing Regulations

The table below lists the Effluent Guidelines promulgated by EPA, organized by industry category.
  • For some of the regulations, the links in the 'Category Overview' column provide a summary of the regulation and available EPA publications for the category.
  • The links under '40 CFR' go directly to the Code of Federal Regulations (CFR). 'Initial' indicates the year of the first rulemaking for the category, and 'Last' indicates the most recent substantive revision.

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Category Overview 40 CFR
(PDF)
Initial Last
449 2012 2012
Aluminum Forming 467 1983 1988
Asbestos Manufacturing 427 1974 1975
Battery Manufacturing 461 1984 1986
Canned and Preserved Fruits and Vegetable Processing 407 1974 1976
Canned and Preserved Seafood (Seafood Processing)¹ 408 1974 1975
Carbon Black Manufacturing 458 1976 1978
Cement Manufacturing 411 1974 1974
Centralized Waste Treatment² 437 2000 2003
Coal Mining 434 1975 2002
Coil Coating 465 1982 1983
Concentrated Animal Feeding Operations (CAFO) 412 1974 2008
Concentrated Aquatic Animal Production (Aquaculture) 451 2004 2004
Construction and Development 450 2009 2014
Copper Forming 468 1983 1985
Dairy Products Processing 405 1974 1974
Electrical and Electronic Components 469 1983 1983
Electroplating 413 1974 1983
Explosives Manufacturing 457 1976 1976
Ferroalloy Manufacturing 424 1974 1974
Fertilizer Manufacturing 418 1974 1974
Glass Manufacturing 426 1974 1974
Grain Mills Manufacturing 406 1974 1974
Gum and Wood Chemicals 454 1976 1976
Hospitals 460 1976 1976
Ink Formulating 447 1975 1975
Inorganic Chemicals 415 1982 1982
Iron and Steel Manufacturing 420 1974 2005
Landfills 445 2000 2000
Leather Tanning and Finishing 425 1982 1996
Meat and Poultry Products 432 1974 2004
Metal Finishing² 433 1983 1986
Metal Molding and Casting (Foundries) 464 1985 1985
Metal Products and Machinery 438 2003 2003
Mineral Mining and Processing 436 1975 1979
Nonferrous Metals Forming and Metal Powders 471 1985 1985
Nonferrous Metals Manufacturing 421 1976 1990
Oil and Gas Extraction 435 1975 2016³
Ore Mining and Dressing (Hard Rock Mining) 440 1975 1988
Organic Chemicals, Plastics and Synthetic Fibers (OCPSF) 414 1987 1993
Paint Formulating 446 1975 1975
Paving and Roofing Materials (Tars and Asphalt) 443 1975 1975
Pesticide Chemicals 455 1978 1996
Petroleum Refining² 419 1974 1982
Pharmaceutical Manufacturing 439 1976 2003
Phosphate Manufacturing 422 1974 1974
Photographic 459 1976 1976
Plastics Molding and Forming 463 1984 1984
Porcelain Enameling 466 1982 1982
Pulp, Paper and Paperboard 430 1974 2002
Rubber Manufacturing 428 1974 1974
Soap and Detergent Manufacturing 417 1974 1975
Steam Electric Power Generating 423 1974 2015³
Sugar Processing 409 1974 1984
Textile Mills 410 1974 1982
Timber Products Processing 429 1974 1981
Transportation Equipment Cleaning 442 2000 2000
Waste Combustors 444 2000 2000
¹ Amendment pending   ² Industry study
³ The 2015-16 amendments have not yet been published in the CFR. For the latest revisions, see the Federal Register notice.

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