Laws & Regulations
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Draft NPDES Permit for Rancheras Water Treatment Plant in Yauco, Puerto Rico
EPA's NPDES wastewater permit for the Rancheras Treatment Plant in Puerto Rico.
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TRI State Contacts
TRI reporting facilities may contact the TRI coordinator for their state with questions about complying with TRI reporting requirements and TRI training opportunities.
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Virginia Underground Injection Control (UIC) permits
Underground Injection Control (UIC) permitted facilities in Virginia
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(Draft Permit) Citgo Petroleum Corp, South Portland, ME, ME0002291
A public notice of a draft MEPDES permit for Citgo Petroleum Corp, South Portland, ME, ME0002291.
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Overview of Early Transfer Guidance
To implement Congressionally mandated action, the U.S. Environmental Protection Agency (EPA) has issued guidance on the transfer of federal property contaminated with hazardous wastes, before cleanup completion. This eplains the early transfer process
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Arkansas SIP: Regulation of Plan § 4. Permits
Arkansas SIP: Regulation of Plan § 4. Permits
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Oklahoma SIP: OK 252:100-27. Particulate Matter Emissions from Industrial and Other Processes and Operations, SIP effective 2000-01-03
OK 252:100-27. Particulate Matter Emissions from Industrial and Other Processes and Operations, SIP effective 2000-01-03
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Arkansas SIP: Reg 19, Appendix A, SIP effective 2007-05-14 (ARd07) to 2015-04-02
AR SIP: Reg 19, Appendix A, effective 2007-05-14 (ARd07) to 2015-04-02
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Arkansas Read Me: Error in 40 CFR 52.170, Identification of plan, in the July 1, 2001 to July 1, 2005, editions of 40 CFR Part 52
Arkansas Read Me: Error in 40 CFR 52.170, [Arkansas] Identification of plan, in the July 1, 2001 to July 1, 2005, editions of 40 CFR Part 52
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Arkansas SIP: Reg 26, Chapter 4, SIP effective 2000-11-15 (ARd02) to 2007-05-13
AR SIP: Reg 26, Chap 4, SIP effective 2000-11-15 (ARd02) to 2007-05-13
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Arkansas Read Me: SIP Regulations Effective November 15, 2000
Arkansas Read Me: SIP Regulations Effective November 15, 2000
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Arkansas SIP: Prevention of Significant Deterioration Regulations, As approved by EPA 05/02/91 (56 FR 20137) at 52.170(c)(28) SIP effective 07/01/91
Arkansas Read Me: SIP Regulations Effective November 15, 2000
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Arkansas SIP: Reg 19, Chap 10: Regulations for the Control of Volatile Organic Compounds in Pulaski County, As approved by EPA March 4, 2015 (80 FR 11573) SIP effective April 3, 2015 (ARd18)
AR SIP: Reg 19, Chap 10: Regulations for the Control of Volatile Organic Compounds in Pulaski County
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Arkansas SIP: Reg 19, Chap 1 SIP effective 2007-05-14 (ARd07) to 2015-04-02
AR SIP Reg 19, Chap 1 SIP effective 2007-05-14 (ARd07) to 2015-04-02
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Per- and Polyfluoroalkyl Substances (PFAS)
Per- and Polyfluoroalkyl Substances (PFAS) and drinking water
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(Draft Permit) Town of Oxford, Oxford, ME, ME0102873
A public notice of a draft MEPDES permit for Town of Oxford, Oxford, ME, ME0102873.
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EPA Region 4 to Review Cleanups at 55 Southeast Superfund Sites in 2026
EPA Region 4 to Review Cleanups at 55 Southeast Superfund Sites in 2026
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Potable Water Treatment Facility General Permit (PWTF GP) for Massachusetts & New Hampshire
Documents, links & contacts for the Notice of Availability of the draft NPDES General Permit for Discharges from Potable Water Treatment Facilities in Massachusetts (MAG640000) and New Hampshire (NHG640000).
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2025 Interim Final Rule to Extend Compliance Deadlines
Interim Final Rule and related 2025 Oil and Gas actions
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Water Quality Standards: Regulations and Resources
Water Quality Standards are an important tool for restoring and maintaining healthy water quality for lakes, rivers and streams, estuaries, and other waters nationally and where you live.