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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) 511 75.3 75.3
Chloride (as Cl) 62.7 9.25 84.5
Aluminum, total (as Al) 44.1 6.508 91.1
Selenium, total recoverable 22.6 3.33 94.4
Zinc, total (as Zn) 17.3 2.55 97.002
Iron, total (as Fe) 11.06 1.63 98.6
Copper, total recoverable 6.64 0.98 99.6
Zinc, total recoverable 1.25 0.18 99.7
Cadmium, total (as Cd) 0.43 0.064 99.8
Vinyl chloride 0.27 0.0409 99.9

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Top Receiving Watersheds (2011)
HUC-12 Code HUC Name Total DMR TWPE (lb-eq/yr)
010900030103 Quinsigamond River 75.7
071100090403 City of Woodriver-Mississippi River 62.7
010900020401 Acushnet River-Frontal Buzzards Bay 12.2
011000051205 Long Meadow Pond Brook-Naugatuck River 0.309
011000051207 Bladens River-Naugatuck River 0.0015

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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)
NY0005665 REVERE COPPER PRODUCTS INC ROME, NY 3351 020200040301 Copper 477
IL0000230 OLIN CORP WINCHESTER MAIN PLANT EAST ALTON, IL 3351 071100090403 Chloride 62.7
MA0004341 WYMAN GORDON PLANT NORTH GRAFTON, MA 3463 010900030103 Aluminum 44.1
AR0049476 MUELLER COPPER TUBE PRODUCTS INC WYNNE, AR 3351 080202050401 Selenium 22.6
MA0004341 WYMAN GORDON PLANT NORTH GRAFTON, MA 3463 010900030103 Copper 19.5
NY0005665 REVERE COPPER PRODUCTS INC ROME, NY 3351 020200040301 Zinc 15.6
MA0004821 REVERE COPPER PRODUCTS PLANT - CLOSED NEW BEDFORD, MA 3351 010900020401 Copper 11.5
MA0004341 WYMAN GORDON PLANT NORTH GRAFTON, MA 3463 010900030103 Iron 11.06
OH0002941 CHASE BRASS & COPPER CO LLC MONTPELIER, OH 3351 041000030302 Copper 6.64
NC0035173 WIELAND COPPER PRODUCTS LLC PINE HALL, NC 3351 030101030306 Copper 2.56

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