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Discharge Monitoring Report (DMR) Pollutant Loading Tool

The Loading Tool is being transitioned into ECHO to increase user access to data and streamline site maintenance. The beta version is now available for testing. EPA plans to retire this site in late November 2017. Current site functionality will be available in ECHO.

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 information on the methodology and types of changes identified, see EPA's most recent odd-numbered year Annual Effluent Guidelines Review Report on the Effluent Guidelines Plan webpage. Because of this review and EPA's methodology for interpreting data and calculating loads, the calculated loads and category rankings may differ from original calculations using DMR and TRI data that have not been updated. Data that have been updated by EPA's annual reviews are indicated by green flags designating that a change has been made to a concentration, quantity, or flow value. A listing of the DMR and TRI data changes from the most recent annual review is available in the Annual Effluent Guidelines Review Report Appendices.

Point Source Category Information - Iron and steel manufacturing (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 29,148 148 29,296 31.9 31.9
LEAD AND LEAD COMPOUNDS 19,468 2,803 22,272 24.3 56.3
MANGANESE AND MANGANESE COMPOUNDS 20,697 117 20,814 22.7 79.03
COPPER AND COPPER COMPOUNDS 3,996 189 4,185 4.56 83.6
MERCURY AND MERCURY COMPOUNDS 2,813 117 2,930 3.19 86.8
POLYCYCLIC AROMATIC COMPOUNDS 2,815 0 2,815 3.074 89.8
ZINC AND ZINC COMPOUNDS 2,464 129 2,593 2.83 92.7
CADMIUM AND CADMIUM COMPOUNDS 2,213 0 2,213 2.41 95.1
CHROMIUM AND CHROMIUM COMPOUNDS 1,253 30.3 1,283 1.401 96.5
NICKEL AND NICKEL COMPOUNDS 849 199 1,048 1.14 97.6

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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)
040400010603 Calumet River-Frontal Lake Michigan 15,233 0 15,233
051402010805 City of Rockport-Ohio River 14,433 0 14,433
050302020102 Mile Run-Ohio River 12,627 0 12,627
041100020604 Cuyahoga Heights-Cuyahoga River 3,976 2,732 6,708
050400040301 Robinson Run-Muskingum River 3,777 0 3,777
050301011109 Wills Creek-Ohio River 2,777 0 2,777
050902031010 McCools Creek-Ohio River 2,616 0 2,616
071401010402 Horseshoe Lake 2,243 0 2,243
020402030604 Laurel Run-Schuylkill River 1,291 11.6 1,302
050301020603 McCullough Run-Shenango River 1,214 0 1,214

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Top Facility Discharges in Toxic-Weighted Pounds (TWPE) (2011)
TRI Facility ID Facility Name City, State NAICS Code HUC-12 Code Top Chemical Top Chemical Direct TRI TWPE (lb-eq/yr) Top Chemical Indirect TRI TWPE (lb-eq/yr) Top Chemical Total TRI TWPE (lb-eq/yr)
47635KSTLC6500N AK STEEL CORP (ROCKPORT WORKS ) ROCKPORT, IN 331110 051402010805 NITRATE COMPOUNDS 13,702 0 13,702
45750LKMMTROUTE ERAMET MARIETTA INC MARIETTA, OH 331110 050302020102 MANGANESE AND MANGANESE COMPOUNDS 12,266 0 12,266
44125MRCNS4300E CHARTER STEEL CLEVELAND CUYAHOGA HEIGHTS, OH 331110 041100020604 LEAD AND LEAD COMPOUNDS 3,914 2,468 6,383
46402SSGRYONENO USS GARY WORKS GARY, IN 331110 040400010603 NITRATE COMPOUNDS 6,123 0 6,123
43812CSHCTSTATE AK STEEL CORP COSHOCTON WORKS COSHOCTON, OH 331110 050400040301 NITRATE COMPOUNDS 3,659 0 3,659
41045NRTHMUS42E NORTH AMERICAN STAINLESS GHENT, KY 331110 050902031010 NITRATE COMPOUNDS 2,332 0 2,332
35064SSFRFVALLE US STEEL CORP-FAIRFIELD WORKS FAIRFIELD, AL 331110 031601120101 POLYCYCLIC AROMATIC COMPOUNDS 2,321 0 2,321
44105SGCLV3060E ARCELORMITTAL CLEVELAND LLC CLEVELAND, OH 331110 CADMIUM AND CADMIUM COMPOUNDS 1,528 0 1,528
46304BTHLHBURNS ARCELORMITTAL BURNS HARBOR LLC BURNS HARBOR, IN 331110 040400010603 COPPER AND COPPER COMPOUNDS 1,495 0 1,495
15034SSRVNPOBOX USS MON VALLEY WORKS - IRVIN PLANT WEST MIFFLIN, PA 331221 LEAD AND LEAD COMPOUNDS 1,491 0 1,491

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