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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 information on the methodology and types of changes identified, see EPA's most recent odd-numbered year Annual Effluent Guidelines Review Report (PDF) (169 pp, 2MB) 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 (PDF) (241 pp, 3.3MB).

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
LEAD AND LEAD COMPOUNDS 3,635 247 3,882 57.01 57.01
MANGANESE AND MANGANESE COMPOUNDS 1,165 55.2 1,220 17.9 74.9
NITRATE COMPOUNDS 411 88.7 499 7.33 82.2
ZINC AND ZINC COMPOUNDS 352 23.2 375 5.51 87.7
COPPER AND COPPER COMPOUNDS 198 59.5 258 3.78 91.5
NICKEL AND NICKEL COMPOUNDS 146 81.006 227 3.34 94.9
MERCURY AND MERCURY COMPOUNDS 190 0 190 2.78 97.7
CHROMIUM AND CHROMIUM COMPOUNDS 88.4 24.3 113 1.65 99.3
COBALT AND COBALT COMPOUNDS 28.82 0.107 28.9 0.42 99.7
SODIUM NITRITE 0 10.08 10.08 0.14 99.9

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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)
050301020603 McCullough Run-Shenango River 945 0 945
050100071001 Hinckston Run-Conemaugh River 646 0 646
120401040201 Langham Creek 485 0 485
111403050309 Brutons Creek 406 0 406
040500012308 Dowagiac River 69.5 0 69.5
071200060502 Spring Creek-Honey Creek 67.1 0 67.1
070102060901 Schmidt Lake-Mississippi River 48.2 5.69 53.9
041201010202 Scott Creek-Frontal Lake Erie 0 52.2 52.2
171100130305 Green River 46.1 2.52 48.6
020503060802 Little Chickies Creek 42.56 0 42.56

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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)
15034SSRVNPOBOX USS MON VALLEY WORKS - IRVIN PLANT WEST MIFFLIN, PA 331221 LEAD AND LEAD COMPOUNDS 1,491 0 1,491
41071NWPRTLICKI IPSCO TUBULARS (KENTUCKY) INC WILDER, KY 331210 LEAD AND LEAD COMPOUNDS 867 0 867
16121DFRCF15ROE NLMK PENNSYLVANIA CORP FARRELL, PA 331221 050301020603 MANGANESE AND MANGANESE COMPOUNDS 526 0 526
15906JHNST124LA JOHNSTOWN WIRE TECHNOLOGIES I NC JOHNSTOWN, PA 331222 050100071001 LEAD AND LEAD COMPOUNDS 325 0 325
77095CMRNF10825 WYMAN-GORDON FORGINGS LP HOUSTON, TX 331210 120401040201 LEAD AND LEAD COMPOUNDS 290 0 290
75668LNSTRHWY25 LONE STAR TUBULAR OPERATIONS LONE STAR, TX 331210 111403050309 MANGANESE AND MANGANESE COMPOUNDS 230 0 230
16121DFRCF15ROE NLMK PENNSYLVANIA CORP FARRELL, PA 331221 050301020603 MERCURY AND MERCURY COMPOUNDS 187 0 187
75668LNSTRHWY25 LONE STAR TUBULAR OPERATIONS LONE STAR, TX 331210 111403050309 LEAD AND LEAD COMPOUNDS 177 0 177
32205DCMWR925NO ADCOM WIRE CO JACKSONVILLE, FL 331222 030801031402 LEAD AND LEAD COMPOUNDS 0 160 160
31732GRGTBSTATE MAVERICK C&P INC CEDAR SPRINGS GEORGIA CEDAR SPRINGS, GA 331210 031300040703 NITRATE COMPOUNDS 142 0 142

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