Learn the Issues
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NPDES SSO Technical Reports and Materials
Series of documents for evaluating Capacity, Management, Operation, and Maintenance (CMOM) Programs and operation and maintenance of Sanitary Sewer Collection Systems.
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Pretreatment Implementation Review Task Force (PIRT)
Documents related to Pretreatment Implementation Review Task Force (PIRT).
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NPDES CSO Control Policy
EPA's Combined Sewer Overflow (CSO) Control Policy
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NPDES CSO Policy Memos
EPA released the following policy memoranda that clarify aspects of the combined sewer overflow (CSO) program and address implementation issues.
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NPDES WET Case Studies
Case studies report evaluating relationship of whole effluent toxicity to biological impacts in a freshwater system.
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NPDES Watershed-Based Permitting Guidance
Documents with additional guidance for NPDES Watershed-Based Permitting.
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Secondary Treatment Standards
Secondary treatment standards for POTWs
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NPDES WET Test Method Video Fact Sheets
EPA developed these DVDs as an important training tool for regional and state NPDES permit writers and laboratories to use as part of their program implementation.
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Format for Submitting Modifications to a 2012 CGP NOI
Modification form for a 2012 CGP NOI.
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NPDES Industrial Stormwater Endangered and Threatened Species Documents
Documents related to industrial stormwater and its effects on endangered and threatened species.
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Central Tenets of the NPDES Permitting Program
Central tenets of the National Pollutant Discharge Elimination System (NPDES) permitting program.
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NPDES Stormwater Pollution Additional Documents
Additional documents related to stormwater and runoff pollution.
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NPDES Pretreatment Program-Amendments to the General Pretreatment Regulations
Documents related to NPDES pretreatment program - Amendments to the General Pretreatment Regulations.
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Secondary Treatment Standards
Secondary treatment standards resources for NPDES permitees.
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EPA Updates the Environmental Chemistry Methods Index for Monitoring Pesticide Residues
EPA has updated the Environmental Chemistry Methods (ECM) Index, a list which currently includes 865 analytical methods for monitoring pesticide residues, primarily in soil or water.
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EPA Revises Guidance to Ensure Effectiveness of Antimicrobial Pesticides Against Candida auris
EPA revised its guidance for evaluating the efficacy of antimicrobial pesticides against Candida auris
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EPA Requests Comments on New Methodologies to Estimate Pesticide Concentrations in Surface Waters
The U.S. Environmental Protection Agency (EPA) is asking for public comments on new methodologies developed by the agency to estimate exposure to pesticides from surface water sources.
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EPA Finalizes Methodologies to Improve Drinking Water Assessments for Conventional Pesticides
EPA has released the final version of three new methodologies to improve drinking water assessments for conventional pesticides.
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Methyl Bromide Buffer Zone Distances for Commodity and Structural Fumigation: Active Aeration, No Stack, 8 Hours or Less
This document contains buffer zone tables required by certain methyl bromide commodity fumigant product labels that refer to Buffer Zone Lookup Tables located at epa.gov/pesticide-registration/mbcommoditybuffer on the label.
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Guidance for Products Adding Residual Efficacy Claims
EPA is announcing the issuance of guidance and test methods for registering antimicrobial products with residual efficacy against viruses and bacteria.