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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).

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Point Source Category Information - Nonferrous metals manufacturing (DMR)

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

Top Pollutants - Toxic-Weighted Pounds (TWPE) (2011)
Pollutant Name Total DMR TWPE (lb-eq/yr) % of Category TWPE Cumulative % of
Category TWPE
Cadmium, total (as Cd) 112,431 63.4 63.4
Lead, total (as Pb) 12,314 6.94 70.3
Chlorine, free available 11,569 6.52 76.9
Zinc, total (as Zn) 9,409 5.308 82.2
Fluoride, dissolved (as F) 5,035 2.84 85.04
Copper, total (as Cu) 4,354 2.45 87.5
Aluminum, total (as Al) 4,190 2.36 89.8
Molybdenum, total (as Mo) 3,330 1.87 91.7
Fluoride, total (as F) 3,287 1.85 93.6
Polychlorinated biphenyls (PCBs) 2,334 1.31 94.9

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Top Receiving Watersheds (2011)
HUC-12 Code HUC Name Total DMR TWPE (lb-eq/yr)
051302050308 Cummings Creek-Cumberland River 138,233
050301010310 Sixmile Run-Ohio River 11,655
060102010108 Pistol Creek 9,446
120402050400 Lower Oyster Creek 3,730
170900030610 Truax Creek-Willamette River 2,689
041503010301 Dodge Creek-Frontal St Lawrence River 2,404
051201080203 Cedar Hollow-Wabash River 2,347
020501060502 Laning Creek-Upper Susquehanna River 1,760
051402011103 Summer Pecka Ditch-Cypress Creek 1,751
041503010302 Raquette Point-Frontal St Lawerence River 971

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Top Facility Discharges in Toxic-Weighted Pounds (TWPE) (2011)
NPDES ID Facility Name City, State SIC Code HUC-12 Code Top Pollutant Top Pollutant TWPE (lb-eq/yr)
TN0029157 NYRSTAR CLARKSVILLE INC CLARKSVILLE, TN 3339 051302050308 Cadmium, total (as Cd) 112,166
TN0029157 NYRSTAR CLARKSVILLE INC CLARKSVILLE, TN 3339 051302050308 Lead, total (as Pb) 12,103
PA0002208 HORSEHEAD CORP MONACA SMELTER MONACA, PA 3339 050301010310 Chlorine, free available 11,569
TN0029157 NYRSTAR CLARKSVILLE INC CLARKSVILLE, TN 3339 051302050308 Zinc, total (as Zn) 9,206
TN0065081 ALUMINUM COMPANY OF AMERICA SOUTH PLANT ALCOA, TN 3334 060102010108 Fluoride, dissolved (as F) 5,035
TN0029157 NYRSTAR CLARKSVILLE INC CLARKSVILLE, TN 3339 051302050308 Copper, total (as Cu) 4,091
TN0065081 ALUMINUM COMPANY OF AMERICA SOUTH PLANT ALCOA, TN 3334 060102010108 Aluminum, total (as Al) 3,908
TX0034738 GULF CHEM AND METALLURGICAL CORP FREEPORT, TX 3341 120402050400 Molybdenum, total (as Mo) 2,371
IN0001210 ALCOA LAFAYETTE OPERATIONS LAFAYETTE, IN 3341 051201080203 Polychlorinated biphenyls (PCBs) 2,334
OR0001112 TDY INDUSTRIES INC DBA WAH CHANG ALBANY, OR 3339 170900030610 Thiocyanate (as SCN) 1,830

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