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Document ID us-mmceg-2025-06-03 Title Metal Molding and Casting (Foundries) Effluent Guidelines URL https://www.epa.gov/eg/metal-molding-and-casting-foundries-effluent-guidelines Jurisdiction /us Subdomain(s) none Language Status completed Analyzed at 2026-05-12 04:27:40.302612+00:00 Relevance inventory_targeted_fetch

16 Qualitative 2 Quantitative 12 Definitions

Q Qualitative Requirements (16)

Req ID	Category	Intent	Legal Status	Name	Subdomain(s)	Context	Conditions	Confidence
#Q001	administrative	operational	guidance	POTW Standard Setting Discretion	wastewater	For indirect dischargers, which is the larger number of plants, POTWs may elect to establish mass-based or concentration-based standards based on the limitations or standards established in the regulations.	Applies to indirect dischargers	high
#Q002	administrative	unknown	mandatory	Applicability Overlap Evaluation	wastewater	Special care needs to be given to potential for overlap of applicability to Metal Molding and Casting facilities with other categories, such as Metal Finishing (note particularly the presence or absence of six "core operations" that must be present for operations to be covered by the Metal Finishing regulations (40 CFR Part 433), Aluminum Forming (40 CFR Part 467), and Copper Forming (40 CFR Part 468).		high
#Q003	administrative	unknown	recommended	Development Document Review	wastewater	Please review the MMC Development Document regarding process operations and associated wastewaters covered in each subcategory (Sections 3 and 5) and the Appendices, notably Appendix C.		high
#Q004	prohibition	treatment	mandatory	Zero Discharge Requirement	wastewater	For three of the process segments, the technology basis of the regulations is "no discharge of process wastewater pollutants."	Applicable to three specific process segments	medium
#Q005	administrative	unknown	mandatory	Regulatory Coverage Verification	wastewater	For precise definitions of coverage, see the applicability sections in 40 CFR Part 421.	When identifying if a facility is subject to Nonferrous Metals Manufacturing Effluent Guidelines	high
#Q006	administrative	unknown	guidance	Secure Communication Protocol	other	Share sensitive information only on official, secure websites.	When using government websites for nonferrous metals manufacturing information	high
#Q007	administrative	operational	mandatory	Mandatory Guideline Incorporation	wastewater	The NFMM Effluent Guidelines and Standards are incorporated into NPDES permits for direct dischargers, and permits or other control mechanisms for indirect dischargers.	Applies to all covered direct and indirect dischargers	high
#Q008	administrative	operational	mandatory	Pesticide Chemicals Subcategory Applicability	wastewater	The Pesticide Chemicals regulation applies to the following subcategories: Organic Pesticide Chemicals Manufacturing (Subpart A), Metallo-Organic Pesticide Chemicals Manufacturing (Subpart B), Pesticide Chemicals Formulating and Packaging (Subpart C), Test Methods for Pesticide Pollutants (Subpart D), and Repackaging of Agricultural Pesticides Performed at Refilling Establishments (Subpart E).	Applies to facilities in the Pesticide Chemicals category	high
#Q009	administrative	operational	mandatory	NPDES Permit Incorporation	wastewater	The Effluent Guidelines and Standards are incorporated into NPDES permits for direct dischargers, and permits or other control mechanisms for indirect dischargers.	Applies to direct and indirect dischargers in the Pesticide Chemicals category	high
#Q010	administrative	unknown	guidance	Secure Information Sharing	other	Share sensitive information only on official, secure websites.	When accessing government websites	high
#Q011	administrative	operational	mandatory	Effluent Guidelines Permit Incorporation	wastewater	The Effluent Guidelines are incorporated into NPDES permits for direct dischargers, and permits or other control mechanisms for indirect dischargers (see Pretreatment Program).	Applies to all covered Metal Molding and Casting direct and indirect dischargers	high
#Q012	monitoring	treatment	mandatory	Total Toxic Organics Monitoring	wastewater	monitoring total toxic organics (TTO) in all subcategories for indirect dischargers (see 40 CFR 464.03(a)).	Applicable to indirect dischargers in all subcategories	high
#Q013	administrative	reporting	mandatory	Pharmaceutical Effluent Guideline Incorporation	wastewater	The Effluent Guidelines are incorporated into NPDES permits for direct dischargers and permits or other control mechanisms for indirect dischargers (refer to Pretreatment Program).	Applies to direct and indirect pharmaceutical dischargers	high
#Q014	administrative	unknown	mandatory	Pharmaceutical Subcategory Applicability	wastewater	The regulation applies to facilities organized into the following five subcategories: Fermentation Products (Subpart A), Extraction Products (Subpart B), Chemical Synthesis Products (Subpart C), Mixing/Compounding and Formulation (Subpart D), Research (Subpart E).		high
#Q015	monitoring	reporting	mandatory	Use of Approved Analytical Methods	wastewater	Facilities must use approved industry-specific CWA test methods for pharmaceutical pollutants when monitoring effluent.	Applicable to all pharmaceutical manufacturing facilities covered by 40 CFR Part 439	high
#Q016	administrative	operational	guidance	NPDES Permit Development Guidance	wastewater	Permit writers and pretreatment coordinators should use the 2006 Guidance Document to assist in developing appropriate NPDES permits and pretreatment requirements for pharmaceutical facilities.		high

P Quantitative Requirements (2)

Req ID	Category	Intent	Legal Status	Name	Subdomain(s)	Limit Type	Limit Value	Context	Conditions	Confidence
#P001	operational	operational	guidance	Production sold to outside customers (job shops)	wastewater	requirement	>= 50 %	Covered facilities include both 'job shops '—plants that sold 50 percent or more of their production to customers outside the corporate entity	Used to classify facilities as 'job shops' under the regulation	medium
#P002	operational	operational	guidance	Products sold internally (captive plants)	wastewater	requirement	>= 50 %	Covered facilities include 'captive plants '—plants that sold 50 percent or more of their products internally or were used within the corporate entity	Used to classify facilities as 'captive plants' under the regulation	medium

D Definitions (12)

Req ID	Category	Name	Context	Confidence
#D001		indirect dischargers	A facility that discharges pollutants to a publicly owned treatment works (municipal sewage treatment plant).	high
#D002		NPDES	National Pollutant Discharge Elimination System	high
#D003		BPT	Best Practicable Technology Currently Available	high
#D004		BAT	Best Available Technology Economically Achievable	high
#D005		NSPS	New Source Performance Standards	high
#D006		PSES	Pretreatment Standards for Existing Sources	high
#D007		PSNS	Pretreatment Standards for New Sources	high
#D008		direct dischargers	A point source that discharges pollutants to waters of the United States, such as streams, lakes, or oceans.	high
#D009		Biochemical oxygen demand (BOD)	a measure of the oxygen-consuming properties of organic matter.	high
#D010		BOD 7	refers to the oxygen demand as determined by incubation at 20 º C for a period of 7 days using an acclimated seed.	high
#D011		NAICS	North American Industrial Classification System	high
#D012		BPT	Best Practicable Control Technology Currently Available	high