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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 p, 7K).

Point Source Category Information - Steam electric power generating (TRI)

EPA 304M Annual Review icon — Indicates load was altered by EPA’s 304M Annual Review. You can hover over the green flag to see the original load from the TRI data.

Top Chemicals - Toxic-Weighted Pounds (TWPE) (2011)
Chemical Name Direct TRI TWPE (lb-eq/yr) Indirect TRI TWPE (lb-eq/yr) Total TRI TWPE (lb-eq/yr) % of Category TWPE Cumulative % of
Category TWPE
COPPER AND COPPER COMPOUNDS 142,066 0.403 142,067 32.1 32.1
ARSENIC AND ARSENIC COMPOUNDS 120,597 3.18 120,600 27.2 59.3
MERCURY AND MERCURY COMPOUNDS 54,336 28.8 54,364 12.2 71.6
SELENIUM AND SELENIUM COMPOUNDS 43,047 0 43,047 9.73 81.3
MANGANESE AND MANGANESE COMPOUNDS 34,608 1.79 34,609 7.82 89.2
LEAD AND LEAD COMPOUNDS 23,808 85.03 23,870 5.39 94.6
NICKEL AND NICKEL COMPOUNDS 4,987 1.16 4,988 1.12 95.7
ZINC AND ZINC COMPOUNDS 4,873 1.68 4,875 1.101 96.8
THALLIUM AND THALLIUM COMPOUNDS 4,280 0 4,280 0.96 97.8
COBALT AND COBALT COMPOUNDS 1,979 0 1,979 0.44 98.2

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Top Receiving Watersheds (2011)
HUC-12 Code HUC Name Direct TRI TWPE (lb-eq/yr) Indirect TRI TWPE (lb-eq/yr) Total TRI TWPE (lb-eq/yr)
050902031010 McCools Creek-Ohio River 26,737 0 26,737
050301061202 Salt Run-Ohio River 18,159 0 18,159
041000020410 Willow Run at mouth 17,235 0 17,235
071402040908 Baldwin Lake-Kaskaskia River 14,814 0 14,814
101301010104 Alderin Creek-Missouri River 14,611 0 14,611
050902030802 Taylor Creek-Ohio River 13,066 3.41 13,069
051100030503 Jacobs Creek-Green River 12,518 0 12,518
050400040301 Robinson Run-Muskingum River 11,976 0 11,976
051401010904 Fall Run-Ohio River 11,881 0 11,881
051402011202 Jackson Creek-Ohio River 11,191 0 11,191

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Top Facility Discharges in Toxic-Weighted Pounds (TWPE) (2011)
TRI Facility ID Facility Name City, State NAICS Code HUC-12 Code Top Chemical Top Chemcical Direct TRI TWPE (lb-eq/yr) Top Chemcical Indirect TRI TWPE (lb-eq/yr) Top Chemcical Total TRI TWPE (lb-eq/yr)
43913CRDNL306CO AMERICAN ELECTRIC POWER CARDINAL PLANT BRILLIANT, OH 221112 050301061202 ARSENIC AND ARSENIC COMPOUNDS 14,140 0 14,140
58571GRTRV4001H GREAT RIVER ENERGY STANTON STA TION STANTON, ND 221112 101301010104 COPPER AND COPPER COMPOUNDS 12,437 0 12,437
35186LBMPWHWY25 GASTON STEAM PLANT WILSONVILLE, AL 221112 031401030201 ARSENIC AND ARSENIC COMPOUNDS 12,120 0 12,120
41045KNTCKUS42P KENTUCKY UTILITIES CO GHENT STATION GHENT, KY 221112 050902031010 SELENIUM AND SELENIUM COMPOUNDS 11,670 0 11,670
31046SCHRR10986 SCHERER STEAM ELECTRIC GENERATING PLANT JULIETTE, GA 221112 COPPER AND COPPER COMPOUNDS 10,710 0 10,710
47025TNNRSAEPDR AMERICAN ELECTRIC POWER TANNERS CREEK PLANT LAWRENCEBURG, IN 221112 050902030802 ARSENIC AND ARSENIC COMPOUNDS 10,504 2.82 10,507
62217LLNSP1901B DYNEGY MIDWEST GENERATION INC BALDWIN ENERGY COMPLEX BALDWIN, IL 221112 071402040908 MERCURY AND MERCURY COMPOUNDS 9,158 0 9,158
41045KNTCKUS42P KENTUCKY UTILITIES CO GHENT STATION GHENT, KY 221112 050902031010 ARSENIC AND ARSENIC COMPOUNDS 8,775 0 8,775
48161DTRTD3500E DETROIT EDISON MONROE POWER PLANT MONROE, MI 221112 041000020410 ARSENIC AND ARSENIC COMPOUNDS 8,484 0 8,484
37763STVKNSWANP US TVA KINGSTON FOSSIL PLANT HARRIMAN, TN 221112 060102070405 ARSENIC AND ARSENIC COMPOUNDS 7,676 0 7,676

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