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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 - Metal Finishing (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
PCB-1248 44,233 29.2 29.2
Polychlorinated biphenyls (PCBs) 28,213 18.6 47.9
Chrysene 24,425 16.1 64.1
Silver, total (as Ag) 10,684 7.071 71.1
Arochlor 1268 9,313 6.16 77.3
Zinc, total (as Zn) 4,951  Original DMR load is 4,192 3.27 80.6
Chlorine, total residual 3,572 2.36 82.9
PCB-1260 3,220 2.13 85.1
Copper, total (as Cu) 2,924 1.93 87.05
Copper, total recoverable 2,871 1.9003 88.9

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Top Receiving Watersheds (2011)
HUC-12 Code HUC Name Total DMR TWPE (lb-eq/yr)
041100020303 Wingfoot Lake outlet-Little Cuyahoga River 52,546
071401010507 Palmer Creek-Mississippi River 24,730
011000050103 East Branch Housatonic River 23,072
041300030704 Genesee River 13,713
020200080306 Wiccopee Creek-Fishkill Creek 3,969
041503050706 Hutchins Creek-Raquette River 3,913
041402011508 Ley Creek Branches 3,414
010900020401 Acushnet River-Frontal Buzzards Bay 3,376
010802050702 Mill Creek-Connecticut River 2,069
120401040705 Highlands Reservoir-San Jacinto River 1,125

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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)
OH0142743 AKRON AIRDOCK FACILITY AKRON, OH 3721 041100020303 Aroclor 1248 43,233
IL0045284 UNION PACIFIC RAILROAD DUPO, IL 4011 071401010507 Chrysene 24,375
MA0003891 GENERAL ELECTRIC PITTSFIELD, MA 3612 011000050103 Polychlorinated biphenyls 23,072
NY0001643 KODAK OPERATIONS AT EASTMAN BUSINESS PARK ROCHESTER, NY 3861 041300030704 Silver 10,417
OH0142743 AKRON AIRDOCK FACILITY AKRON, OH 3721 041100020303 Aroclor 1268 9,313
MA0003930 CORNELL-DUBILIER ELECTRONICS DISTRIBUTION CENTER NEW BEDFORD, MA 3675 010900020401 Polychlorinated biphenyls 3,376
NY0001163 CARRIER CORP SYRACUSE, NY 3585 041402011508 Aroclor 1260 3,220
NC0044725 LAURINBURG-MAXTON AIRPORT COMMISSION MAXTON, NC 2514 030402030303 Zinc 3,185
HI0021786 MARISCO, LTD. KAPOLEI, HI 3731 200600000506 Copper 2,093
NY0000540 GM PT MASSENA MASSENA, NY 3714 041503050706 Polychlorinated biphenyls 1,766

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