Discharge Monitoring Report (DMR) Pollutant Loading Tool
- Overview
- EZ Search
- TRI Search
- Facility Search
- Advanced Search
- Data Explorer
- Everyday Searches
- User‘s Guides/Tech Documents
Note: The tool uses discharge monitoring report (DMR) data from ICIS-NPDES and PCS to calculate pollutant discharge amounts. EPA has verified the accuracy of the tool’s calculations. EPA has also performed a limited review of the underlying data that has focused on facilities with the largest amounts of pollutant discharges. Due to the large amount of DMR data, additional errors exist in ICIS-NPDES and PCS. Please see the User’s Guide (29 pp, 2.6MB), Frequently Asked Questions and Answers, and Error Correction page for instructions on how to use the tool and how to correct errors in ICIS-NPDES and PCS. You can send an email to waterloadings@epa.gov with any comments or questions about the tool. You can sign up for our e-mail news bulletin and be notified when new data, enhancements, or training materials are available. The tool also uses wastewater pollutant discharge data from the Toxics Release Inventory (TRI).
Users Guide/Technical Documents
The following links provide access to documents that contain additional information on how you can use the DMR Pollutant Loading Tool.
You will need Adobe Reader to view some of the files on this page. See EPA’s PDF page to learn more.
User Guides and FAQs – Useful Info for All Users
- Frequently Asked Questions and Answers (FAQ)
- Overview of the Loading Tool (PDF) (5 pp, 49K)
- Quick User’s Guide for the Discharge Monitoring Report (DMR) Pollutant Loading Tool (PDF) (29 pp, 2.6MB)
- Data Dictionary for Searches (PDF) (75 pp, 1.5MB)
- User’s Guide for the TRI Search (PDF) (8 pp, 1.2MB)
- User’s Guide for Error Reporting
Technical Support Documents – Useful for More Technical Users
- Overview of the Loading Tool Architecture for the EZ and Advanced Search Options (PDF) (3 pp, 92K)
- Technical Users Background Document for the Discharge Monitoring Report (DMR) Pollutant Loading Tool (PDF) (143 pp, 2.4MB)
- Attachment A (PDF) (234 pp, 1MB)
- Attachment B (PDF) (211 pp, 1.2MB)
- Attachment C (PDF) (58 pp, 348K)
- Attachment D (PDF) (1,064 pp, 4.15MB)
- Attachment E (PDF) (18 pp, 99K)
- DMR Pollutant Loading Tool Web Services (PDF) (9 pp, 87K)
- Comment and Response Document for Beta Release (PDF) (121 p, 5.4MB)
Files For Downloading
- DMR Pollutant Parameters Used and Not Used by the Loading Tool (CSV file, 200KB)
- List of TRI Chemicals (XLS) (374K)
- Unit Conversions Used by the Loading Tool (CSV file, 4K)
- Steam Electric Industry - EIA/NPDES ID Match-Up (XLS file,954K)
NPDES Program Info
Info on Everyday Searches and Data Explorer Tabs
- Everyday Searches User’s Guide (PDF) (16 pp, 2MB)
- User’s Guide for the Data Explorer (PDF) (8 pp, 770K)
- About the Nutrient Modeling Search (PDF) (4 pp, 80K)
- Attachment 1: Summary Statistics for Loading Calculations (CSV) (340K)
- Attachment 2: Typical Pollutant Concentrations (CSV) (20K)
- Overview of Facility Look-Up Table (PDF) (3 pp, 49K)
- Attachment 1 (text file, 17MB)
- Overview of Industry Code Look-Up Table (PDF) (2 pp, 55K)
- Attachment 1 (comma-delimited file, 6K)
- Attachment 2 (comma-delimited file, 16K)
- Overview of Pollutant Look-Up Table (PDF) (4 pp, 62K)
- Attachment (comma-delimited file, 157K)
- Overview of Watershed Look-Up Table (PDF) (2 pp, 43K)
- Attachment 1 (PDF) (12 pp, 7MB)
- Attachment 2 (comma-delimited file, 5.4MB)
Watershed Data and Maps Used in the EZ Search
- Watershed Data in the DMR Pollutant Loading Tool (PDF) (5 pp, 51K)
- List of HUC12 Watersheds for Each Major U.S. Watershed (comma-delimited file, 5.9MB)
HUC Maps and Codes for Major U.S. Watersheds
- Albermarle and Pamlico Sounds (PDF) (1 pg, 538K)
- Chesapeake Bay (PDF) (1 pg, 776K)
- Columbia River Basin (PDF) (1 pg, 1.4MB)
- Delaware Bay (PDF) (1 pg, 178K)
- Delaware River Watershed (PDF) (1 pg, 170K)
- Great Lakes Watershed (PDF) (1 pg, 762K)
- Long Island Sound (PDF) (1 pg, 410K)
- Lower Columbia River Estuary (PDF) (1 pg, 297K)
- Mobile Bay (PDF) (1 pg, 223K)
- Ohio River Basin (PDF) (1 pg, 1.3MB)
- Puget Sound Watershed (PDF) (1 pg, 527K)
- San Francisco Watershed (PDF) (1 pg, 361K)
- Tampa Bay (PDF) (1 pg, 241K)
| About the Data | Glossary | Error Correction | Contact Us |