Learn the Issues
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Frequent Questions about the Waste Reduction Model
This page provides responses to frequent questions about EPA’s Waste Reduction Model (WARM. The page includes information and guidance on using the tool.
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Emerging Viral Pathogen Guidance and Status for Antimicrobial Pesticides
The guidance outlines a voluntary, two stage process involving product label amendments and modified terms of registration and applies only to emerging viruses.
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Columbia River
Homepage for information about EPA's priorities in the Columbia River Basin.
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West Africa Drinking Water Laboratory Capacity Program: Quality Assurance Manual
This Laboratory Quality Assurance Manual documents the Quality Assurance Programme and activities in Ghana Water Company Limited. This manual was one of the outcomes from the West Africa Drinking Water Laboratory Capacity Program,
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Emerging Fuels and Underground Storage Tanks
Find information and resources regarding storing ethanol and biodiesel fuels in underground storage tanks.
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Inquire about Visiting EPA through the International Visitors Program
EPA's International Visitors Program arranges appointments at EPA headquarters in Washington, D.C, and at our offices and laboratories throughout the nation.
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Fuel Oxygenates and USTs
Learn about fuel oxygenates, which are used as a fuel additive and octane enhancer in reformulated gasoline, oxygenated fuel, and premium grades of unleaded gasoline.
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Breuner Marsh Restoration Project
Information about the San Francisco Bay Water Quality Project (SFBWQP) Breuner Marsh Restoration Project, part of an EPA competitive grant program to improve SF Bay water quality focused on restoring impaired waters and enhancing aquatic resources.
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Learn About Water System Partnerships
Water system partnerships can provide a variety of viable solutions to many of the challenges that small systems face.
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Supporting Water System Partnership
These documents contain information helpful to state capacity building program management.
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Economic Impact Analyses for Air Pollution Regulations
ECAS web page for Economic Impact Analyses
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2023 NEI Supporting Data and Summaries
Explains the sources of information in the inventory; show what sources of data used for each sector; and provide more information about the components.
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Contact Us: National Pretreatment Program
Contact information for Pretreatment programs
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Draft Clean Water Act Section 106 Tribal Grant Guidance
Revisions to the Final Guidance on Awards of Grants to Indian Tribes under Section 106 of the Clean Water Act
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About the Clean Watersheds Needs Survey (CWNS)
The CWNS is a comprehensive assessment of the capital costs (or needs) to meet the water quality goals of the CWA and address water quality and water quality related public health concerns.
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Clean Watersheds Needs Survey (CWNS) 2008 Reports Help
This document provides information about how to create and use CWNS reports that are available online.
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Clean Watersheds Needs Survey (CWNS) 2008: Regional and EPA Program Area Needs
This document supplements the CWNS 2008 Report to Congress by summarizing federal needs data by various major watershed basins and EPA program areas.
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Clean Watersheds Needs Survey (CWNS) 2004: Regional and EPA Program Area Needs
This document supplements the CWNS 2004 Report to Congress by summarizing federal needs data by various major watershed basins and EPA program areas.
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Clean Watersheds Needs Survey (CWNS) State Fact Sheets - 2004
The CWNS State Fact Sheets provide summaries of needs, number of facilities, and population served, by state.
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Clean Watersheds Needs Survey (CWNS) State Fact Sheets - 2008
The CWNS State Fact Sheets provide summaries of needs, number of facilities, and population served, by state.