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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 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 - 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) 109,264 48.5 48.5
Copper, total (as Cu) 57,314 25.4 74.07
Lead, total (as Pb) 13,268 5.9002 79.9
Fluoride, total (as F) 11,131 4.95 84.9
Zinc, total (as Zn) 9,283 4.12 89.05
Vanadium, total (as V) 5,697 2.53 91.5
Polychlorinated biphenyls (PCBs) 5,152 2.29 93.8
Fluoride, dissolved (as F) 4,684 2.082 95.9
Aluminum, total (as Al) 3,749 1.66 97.6
Chlorine, total residual 2,184 0.97 98.6

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Top Receiving Watersheds (2011)
HUC-12 Code HUC Name Total DMR TWPE (lb-eq/yr)
051302050308 Cummings Creek-Cumberland River 135,189
050301010310 Sixmile Run-Ohio River 9,564
060102010108 Pistol Creek 8,884
080401010806 Lake Hamilton Dam 5,697
041503010301 Dodge Creek-Frontal St Lawrence River 2,868
051402011103 Summer Pecka Ditch-Cypress Creek 1,975
050302011004 Haynes Run-Ohio River 529
050302020803 Oldtown Creek-Ohio River 416
050800020903 Paddys Run 347
170900030610 Truax Creek-Willamette River 277

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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 108,917
TX0004715 ALCOA WORLD ALUMINA LLC POINT COMFORT, TX 3334 121004010100 Copper 52,965
TN0029157 NYRSTAR CLARKSVILLE INC CLARKSVILLE, TN 3339 051302050308 Lead 13,013
PA0002208 HORSEHEAD CORP MONACA SMELTER MONACA, PA 3339 050301010310 Fluoride 9,564
TN0029157 NYRSTAR CLARKSVILLE INC CLARKSVILLE, TN 3339 051302050308 Zinc 9,099
AR0000523 EVRAZ STRATCOR INC HOT SPRINGS, AR 3339 080401010806 Vanadium 5,697
OK0041874 YAFFE IRON & METAL CO. INC. MUSKOGEE, OK 3341 111101020303 Polychlorinated biphenyls 5,152
TN0065081 ALCOA INC.-SOUTH PLANT ALCOA, TN 3334 060102010108 Fluoride 4,684
TN0029157 NYRSTAR CLARKSVILLE INC CLARKSVILLE, TN 3339 051302050308 Copper 4,160
TN0065081 ALCOA INC.-SOUTH PLANT ALCOA, TN 3334 060102010108 Aluminum 3,715

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