Learn the Issues
-
Rainfall Erosivity Factor Calculator for Small Construction Sites
The Rainfall Erosivity Factor Calculator can be used to help determine if your small construction site qualifies for stormwater discharge waivers.
-
Sanitary Sewer Overflow (SSO) Additional Resources
Information and resources regarding CSO and SSOs requirements and compliance.
-
NPDES WET Methodology Documents
Document supplements existing EPA guidance and policies on WET
-
Combined Sewer Overflows (CSOs)
Overview of combined sewer overflows (CSO), guidance, and policies.
-
Stormwater Discharges from Municipal Sources-Resources
Polluted stormwater runoff is commonly transported through municipal separate storm sewer systems (MS4s), and then often discharged, untreated, into local water bodies.
-
Smart Sewers
NPDES CSO policy memoranda, reports to Congress, and trainings.
-
Stormwater Discharges from Municipal Sources-Developing an MS4 Program
Polluted stormwater runoff is commonly transported through municipal separate storm sewer systems (MS4s), and then often discharged, untreated, into local water bodies.
-
NPDES Stormwater Webcasts
Webcasts and webinars for NPDES stormwater.
-
Best Management Practices for Net Pen Aquaculture
Best Management Practices for Net Pen Aquaculture
-
Best Management Practices for Flow-Through Aquaculture
Best Management Practices for Flow-Through Aquaculture
-
Stormwater Rules and Notices-Final Rules
Congress gives EPA authority to develop and implement federal stormwater regulations which must go through a rulemaking process. The process includes a proposal, public comment, and a final rule that must then be implemented and enforced.
-
NPDES Applications and Forms-EPA Forms
A place for all NPDES applications and forms.
-
Estimating Users of Water Resources: Springfield–Greene County Data Collection Plan
This data collection plan provides next steps for the Springfield and Green County project partners and ideas for other communities on how to collect water resource user data to help support an integrated planning process.
-
Water Quality Trading
An overview of the water quality trading program.
-
Stormwater Discharges from Municipal Sources
Polluted stormwater runoff is commonly transported through municipal separate storm sewer systems (MS4s), and then often discharged, untreated, into local water bodies.
-
Data and Mapping Tools for NPDES Permittees
Managing discharges to protect water quality can be aided by the refinement of the methods, tools and information used to develop and implement NPDES permits and programs.
-
National Menu of Best Management Practices (BMPs) for Stormwater-Public Education
EPA has found the practices listed in the menu of BMPs to be representative of the types of practices that can successfully achieve the minimum control measures.
-
About Stormwater Planning
About Long-Term Stormwater Planning
-
Report to Congress on Integrated Plans and Interactive StoryMap
This report describes EPA’s Integrated Planning Framework which lays out a flexible process and includes overarching principles and six essential elements that integrated plans should address.
-
Trash Free Waters
Trash-Free Waters provides information about the myriad problems and solutions of pollution that get in our human-made and natural water systems.