Learn the Issues
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National Pollutant Discharge Elimination System Program
Helping permittees and permit writers protect water quality under changing conditions through the methods, tools, and information used to develop and implement NPDES permits and programs.
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National Estuary Program
NEP is a collaborative, efficient, and adaptable ecosystem-based network of organizations that protects and restores 28 estuaries of national significance.
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Long Island Sound Study
LISS is a partnership to restore and protect the Long Island Sound.
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Hydrologic and Water Quality System: A Modeling Tool for Evaluating Effects to Water Quantity and Quality
HAWQS is a web-based interactive water quantity and water quality modeling system that can assist federal agencies, states, local governments, and others with water quality protection decision-making and policy evaluation in the contiguous United States.
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Healthy Watersheds Program
A healthy watershed has mostly natural land cover, especially near its waters; good water quality, quantity, and flow; and habitats with diverse aquatic life. Together, these components support long-term, sustainable benefits to people and the environment.
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Drought and Water Scarcity Initiatives
Drought and water scarcity initiatives work across the National Water Program and with our federal partners to help combat water scarcity and build long-term drought resilience in partnership with states, tribes, and local communities.
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Climate Ready Estuaries Program
CRE worls with the National Estuary Programs and the coastal management community to assess climate change vulnerabilities, develop and implement adaptation strategies, and engage and educate stakeholders.
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Examples of State and Local Demolition Programs
Examples of local government large-scale residential demolition programs
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Buying Green for Federal Purchasers
This webpage provides information and resources related to greener products and purchasing for federal purchasers.
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NPDES Experts Forum on Public Health Impacts of Wet Weather Blending Documents
NPDES experts forum on public health impacts of wet weather blending documents.
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Ants and Schools
Like some types of termites, bees and wasps, ants are social insects and live in colonies made up of thousands of members.Find out about health concerns and control for ants.
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Clinton River AOC
Background information and beneficial use impairments for Clinton River AOC.
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North American SmartWay
Canada, the United States, and Mexico are all working together to harmonize their freight efficiency voluntary programs under the EPA's SmartWay brand.
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Superfund Risk Assessment: Ecological Risk Topics
superfund ecological risk planning and scoping, problem formulation, stressor response and exposure analysis and risk characterization.
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Method 23 - Dioxins and Furans
CFR Promulgated Test Method 23 Determination of Polychlorinated Dibenzo-p-Dioxins and Polychlorinated Dibenzofurans From Stationary Sources.
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Lead & Copper Rule (LCR) Training
Lead & Copper Rule (LCR) Training - Presented by Chelsea Ransom at the WARWS Conference held in April of 2023 and again at the Midwest Assistance Program (MAP) training event.
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USMCA Tijuana River Watershed Meeting Materials-February 25, 2021
Meeting materials for USMCA Tijuana River Watershed Eligible Public Entities Coordinating Group held November 19, 2020.
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USMCA Tijuana River Watershed Meeting Materials-February 26, 2021
Meeting materials for USMCA Tijuana River Watershed public information meeting held November 20, 2020.
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USMCA Tijuana River Watershed Meeting Materials-June 25, 2020
Meeting materials for USMCA Tijuana River Watershed public information meeting held November 20, 2020.
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Restoration Projects for the Black River AOC
Table describing remediation work on the Black River AOC.