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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 - 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 1,649 80.8 80.8
Zinc 66.8 3.27 84.1
Chloride 62.7 3.079 87.2
Silver 51.9 2.54 89.8
Cyanide 49.1 2.409 92.2
Aluminum 46.3 2.27 94.4
Lead 43.9 2.15 96.6
Selenium 22.6 1.11 97.7
Nickel 20.1 0.98 98.7
Iron 11.2 0.55 99.2

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Top Receiving Watersheds (2011)
HUC-12 Code HUC Name Total DMR TWPE (lb-eq/yr)
071100090403 City of Woodriver-Mississippi River 1,300
010900030103 Quinsigamond River 75.7
011000051205 Long Meadow Pond Brook-Naugatuck River 64.4
051201030511 Boots Creek-Mississinewa River 48.7
080202050401 Indian Creek-L'Anguille River 22.6
010900020401 Acushnet River-Frontal Buzzards Bay 12.2
080302010404 Jasper Creek 6.41
120401040201 Langham Creek 6.409
011000051207 Bladens River-Naugatuck River 3.63
010900030208 Peters River-Blackstone River 1.16

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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 EAST ALTON, IL 3351 071100090403 Copper 1,126
NY0005665 REVERE COPPER PRODUCTS INC ROME, NY 3351 020200040301 Copper 477
IL0000230 OLIN CORP EAST ALTON, IL 3351 071100090403 Chloride 62.7
CT0021873 SOMERS THIN STRIP (OLIN) WATERBURY, CT 3351 011000051205 Silver 51.9
IL0000230 OLIN CORP EAST ALTON, IL 3351 071100090403 Cyanide 49.1
MA0004341 WYMAN GORDON PLANT NORTH GRAFTON, MA 3463 010900030103 Aluminum 44.1
IL0000230 OLIN CORP EAST ALTON, IL 3351 071100090403 Zinc 42.9
AR0049476 MUELLER COPPER TUBE PRODUCTS INC WYNNE, AR 3351 080202050401 Selenium 22.6
IL0000230 OLIN CORP EAST ALTON, IL 3351 071100090403 Nickel 19.7

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