Laws & Regulations
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Fact Sheets about the Fourth Unregulated Contaminant Monitoring Rule (UCMR 4)
Fact Sheets explaining the program, contaminants for monitoring, water systems applicable, timeframe & monitoring frequency, monitoring locations, critical requirements, data elements and where to find additional information on monitoring data.
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Frequent Questions about e-Manifest
Frequently Asked Questions (FAQ) about e-Manifest covering these areas: scope, generators, receivers, manifest preparation & brokers, federal and state implementation, fee obligations, record retention, data policy, data correction, and user registration.
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Method 546: Determination of Total Microcystins and Nodularins in Drinking Water and Ambient Water by Adda Enzyme-Linked Immunosorbent Assay
Analytical method for drinking water analysis.
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SDWA-09-2025-0101: The Gas Company, LLC dba Hawaii Gas, Lihue, HI; Consent Agreement and Final Order
Consent Agreement and Final Order ("CAFO") between the U.S. Environmental Protection Agency, Region 9 and The Gas Company, LLC dba Hawaii Gas, Lihue, Hawaii. EPA Docket No. SDWA-09-2025-0101.
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Reporting Unintended Exposure and Harm from Pesticides (Incidents)
Pesticides incidents must be reported by pesticide registrants. Others, such as members of the public and environmental professionals, would like to report pesticide incidents. This website will facilitate such incident reporting.
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Nonattainment and Ozone Transport Region (OTR) SIP Requirements
The Clean Air Act (CAA) requires a group of northeast states, which make up the Ozone Transport Region (OTR), to submit a SIP and install a certain level of controls for the pollutants that form ozone, even if they meet ozone standards.
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Managing Air Quality - Ongoing Evaluation of Progress
Describes the importance of evaluating if air quality programs are achieving the desired results to inform environmental program managers, regulated industry and the public, and provides EPA examples.
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Office of Enforcement and Compliance Assurance Annual Results Reports
Highlights EPA's compliance and enforcement accomplishments during the fiscal year
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Pesticide Registration Manual: Confidential Statement of Formula Documents
These documents will help you complete the confidential statement of formula for pesticides registrations.
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Quantifying Actual or Potential Emissions for Permitting Purposes
Explanation of the meaning of Regulated New Source Review (NSR) Pollutants
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Petmin USA Incorporated
US/Canada AQA Notification Table
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New Source Review Laws & Statutes
Provides information on the laws and statues that underlie the New Source Review Program.
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Notice of Action Denying Petition for Reconsideration and Administrative Stay of the Project Emissions Accounting Rule
Denial of petition for reconsideration and request for administrative stay of EPA’s November 24, 2020 final rule titled “Prevention of Significant Deterioration (PSD) and Nonattainment New Source Review (NNSR): Project Emissions Accounting”
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Improving Safety at Facilities in New England with Smaller Ammonia Refrigeration Systems
Compliance Assurance and Enforcement Focus on Improving Safety at Facilities in New England with Smaller Ammonia Refrigeration Systems
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Good Samaritan Cleanup Example ASAOC
Learn about the Black Swan Restoration Reach Good Samaritan Project in Colorado, an example Administrative Settlement Agreement and Order on Consent (ASAOC).
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Ground Water Forum
The Ground Water Forum is a group of groundwater scientists that support the Superfund and Resource Conservation and Recovery Act (RCRA) programs in each of EPA’s 10 regional offices.
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Groundwater Guidance and Reports: Table of Contents
Access key EPA groundwater guidance and selected other reports on groundwater used frequently by Superfund Remedial Project Managers.
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Deleted National Priorities List (NPL) Sites - by State
View a list of Superfund sites deleted from the NPL, organized by state and territory. Use the interactive map for quick access.
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Deleted National Priorities List (NPL) Sites - by Site Name
View a list of Superfund sites deleted from the NPL, ordered alphabetically by site name.