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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 - Copper forming (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
Copper, total (as Cu) 2,212 72.05 72.05
Lead, total (as Pb) 351 11.4 83.4
Cyanide, weak acid, dissociable 77.5 2.52 86.01
Zinc, total (as Zn) 66.7 2.17 88.1
Chloride (as Cl) 62.7 2.045 90.2
Silver, total (as Ag) 57.6 1.87 92.1
Aluminum, total (as Al) 44.1 1.43 93.5
Lead, total recoverable 43.9 1.43 94.9
Nickel, total (as Ni) 40.1 1.309 96.2
Chromium, hexavalent (as Cr) 34.06 1.109 97.3

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Top Receiving Watersheds (2011)
HUC-12 Code HUC Name Total DMR TWPE (lb-eq/yr)
071100090304 East Branch Wood River-Wood River 1,662
050301010309 Crows Run-Ohio River 562
011000051205 Long Meadow Pond Brook-Naugatuck River 81.4
010900030103 Quinsigamond River 75.7
010900020401 Acushnet River-Frontal Buzzards Bay 12.2
120401040201 Langham Creek 6.409
011000051207 Bladens River-Naugatuck River 5.45

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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)
IL0000230 OLIN CORP WINCHESTER MAIN PLANT EAST ALTON, IL 3351 071100090304 Copper 1,126
PA0000566 HUSSEY COPPER LTD LEETSDALE, PA 3351 050301010309 Copper 562
NY0005665 REVERE COPPER PRODUCTS INC ROME, NY 3351 020200040301 Copper 477
IL0000230 OLIN CORP WINCHESTER MAIN PLANT EAST ALTON, IL 3351 071100090304 Lead 269
NY0005665 REVERE COPPER PRODUCTS INC ROME, NY 3351 020200040301 Lead 81.7
IL0000230 OLIN CORP WINCHESTER MAIN PLANT EAST ALTON, IL 3351 071100090304 Cyanide 77.5
IL0000230 OLIN CORP WINCHESTER MAIN PLANT EAST ALTON, IL 3351 071100090304 Chloride 62.7
CT0021873 SOMERS THIN STRIP (OLIN) WATERBURY, CT 3351 011000051205 Silver 57.6
MA0004341 WYMAN GORDON PLANT NORTH GRAFTON, MA 3463 010900030103 Aluminum 44.1

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