Jump to main content or area navigation.

Contact Us

Discharge Monitoring Report (DMR) Pollutant Loading Tool

Note:This area of the DMR Loading Tool includes data used for EPA's annual review of industrial effluent discharges. EPA's Office of Water is responsible for developing programs and tools authorized under the Clean Water Act (CWA), which enables EPA and the states to protect and restore the Nation's waters. The CWA requires EPA to annually review and, if appropriate, revise its water pollution control technology-based regulations, called "effluent limitations guidelines" or "effluent guidelines," that limit the discharge of pollutants to waters of the U.S. from industrial facilities. As part of the EPA's annual reviews, EPA estimates the load of pollutants discharged using a combination of discharge monitoring report (DMR) data, from ICIS-NPDES, and Toxics Release Inventory (TRI) data. EPA also assigns a relative toxic weight to the estimated loads to rank industrial categories by toxic weighted pound equivalents (TWPE). For more background on EPA's effluent guidelines program see EPA's Effluent Guidelines website.

EPA reviews the DMR and TRI data used to calculate effluent loads and TWPE for accuracy prior to further investigating industrial categories for possible effluent guideline revisions. For identified outlier data, EPA contacts states and facilities to confirm and update (if appropriate) data values and units. For more information on the types of errors identified, see EPA's Technical Support Document for the 2010 Effluent Guidelines Program (PDF) (255 pp, 3.4MB). Because of this review, and EPA's methodology for interpreting data and calculating loads (explained in EPA's Technical Support Document for the Annual Review of Existing Effluent Guidelines and Identification of Potential New Point Source Categories), the calculated loads and category rankings may differ using DMR and TRI data that has not been updated. Data that have been updated by EPA's annual reviews are flagged by green flags designating that a change has been made to a concentration, quantity, or flow value. View a listing of the changes for the most recent annual review (PDF) (1 pg, 7K).

Point Source Category Information - Canned and preserved seafood processing (TRI)

EPA 304M Annual Review icon — Indicates load was altered by EPA’s 304M Annual Review. You can hover over the green flag to see the original load from the TRI data.

Top Chemicals - Toxic-Weighted Pounds (TWPE) (2011)
Chemical Name Direct TRI TWPE (lb-eq/yr) Indirect TRI TWPE (lb-eq/yr) Total TRI TWPE (lb-eq/yr) % of Category TWPE Cumulative % of
Category TWPE
NITRATE COMPOUNDS 74.1 0 74.1 100 100

Download All Data

Top Receiving Watersheds (2011)
HUC-12 Code HUC Name Direct TRI TWPE (lb-eq/yr) Indirect TRI TWPE (lb-eq/yr) Total TRI TWPE (lb-eq/yr)
080302060300 14.6 0 14.6
080302060900 6.048 0 6.048
080302071600 5.104 0 5.104
031001010101 Lake Parker 0 0 0
020801020103 Cockrell Creek-Lower Chesapeake Bay 0 0 0
080801030205 Vermilion River-Frontal Intercoastal Waterway 0 0 0

Download All Data

Top Facility Discharges in Toxic-Weighted Pounds (TWPE) (2011)
TRI Facility ID Facility Name City, State NAICS Code HUC-12 Code Top Chemical Top Chemcical Direct TRI TWPE (lb-eq/yr) Top Chemcical Indirect TRI TWPE (lb-eq/yr) Top Chemcical Total TRI TWPE (lb-eq/yr)
35462STHFRHWY43 SOUTHFRESH AQUACULTURE LLC EUTAW, AL 311712 031601130606 NITRATE COMPOUNDS 25.6 0 25.6
39341SPRRF11751 SUPERIOR FISH PRODUCTS INC MACON, MS 311712 031601080702 NITRATE COMPOUNDS 22.7 0 22.7
39038FRSHW4700H FRESHWATER FARMS PRODUCTS LLC BELZONI, MS 311712 080302060300 NITRATE COMPOUNDS 13.9 0 13.9
39194SMMNS2628E SIMMONS FARM RAISED CATFISH I NC YAZOO CITY, MS 311712 080302060900 NITRATE COMPOUNDS 6.048 0 6.048
38754CNFSHSOUTH CONFISH INC ISOLA, MS 311712 080302071600 NITRATE COMPOUNDS 5.104 0 5.104
3903WCNFSHHIGHW CONFISH INC BELZONI, MS 311712 080302060300 NITRATE COMPOUNDS 0.63 0 0.63
70631ZPTHYHC69B OMEGA PROTEIN INC CAMERON PLANT CAMERON, LA 311712 080802021201 AMMONIA 0 0 0
32208SHWSS821VI SHAWS SOUTHERN BELLE FROZEN FOODS INC JACKSONVILLE, FL 311712 030801031501 AMMONIA 0 0 0
33527TRSRR3060G TAMPA BAY FISHERIES INC DOVER, FL 311712 AMMONIA 0 0 0
22530ZPTHYPOBOX OMEGA PROTEIN INC REEDVILLE, VA 311712 020801020103 NITRIC ACID 0 0 0

Download All Data

Top of Page

About the Data Glossary Error Correction Contact Us

Jump to main content.