From the ECHO Web Site:
This new Water facility search interface is tailored to the National Pollutant Discharge Elimination System (NPDES) industrial stormwater program and makes it easier to find information about facilities that discharge under EPA’s Multi-Sector General Permit for industrial stormwater discharges. It sets the stage for enhanced transparency of new data that will be submitted electronically as a result of NPDES Electronic Reporting Rule implementation.
New data available through this interface include certain elements from Notices of Intent for permit coverage, such as information related to stormwater pollution prevention plans. Please note that benchmark limits and exceedances are not yet displayed in ECHO and the goal is to add them later this year.
Also, a new Data Downloads feature allows users to download the Water datasets by state under ‘Download Data by Jurisdiction’. The data download files are large data sets that may be of particular use to academics and analysts. An ECHO goal is to provide data as broadly as possible, and these files, along with the web interface and services, offer a variety of ways to consume EPA’s enforcement and compliance data. This feature responds to user requests to separate the Water Discharge Monitoring Report (DMR) datasets into smaller files.