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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 - Transportation Equipment Cleaning (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
Chlorine, total residual 145 40.04 40.04
Cadmium, total (as Cd) 101 27.8 67.9
Iron, total (as Fe) 26.5 7.34 75.2
Aluminum, total (as Al) 25.9 7.19 82.4
Copper, total (as Cu) 24.6 6.82 89.3
Lead, total recoverable 13.5 3.75 93.06
Zinc, total (as Zn) 7.44 2.058 95.1
Selenium, total recoverable 4.22 1.17 96.2
Manganese, total (as Mn) 3.58 0.99 97.2
Mercury, total (as Hg) 2.99 0.82 98.1

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Top Receiving Watersheds (2011)
HUC-12 Code HUC Name Total DMR TWPE (lb-eq/yr)
020301040204 Morses Creek-Arthur Kill 162
080101000602 Tamm Bend-Mississippi River 32.3
031602040505 Tensaw River-Apalachee River 23.6
050901011007 Buffalo Creek-Ohio River 4.509
120402050400 Lower Oyster Creek 0.73
050500050404 Cherry River 0.68
120401040703 Vince Bayou-Buffalo Bayou 0.13
041402010101 Upper Mud Creek 0.066
050200030306 Booths Creek 0.036
050302020904 Crooked Creek-Ohio River 0.014

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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)
TX0100242 FISHING HARBOR WWTP BROWNSVILLE, TX 4491 121102080900 Total Residual Chlorine 107
NY0200484 CLEAN WATER OF NEW YORK INC STATEN ISLAND, NY 7699 020301040204 Cadmium 101
NY0200484 CLEAN WATER OF NEW YORK INC STATEN ISLAND, NY 7699 020301040204 Total Residual Chlorine 36.1
AR0050083 KINDER-MORGAN BULK TERMINALS BLYTHEVILLE, AR 4491 080101000602 Aluminum 25.9
NY0200484 CLEAN WATER OF NEW YORK INC STATEN ISLAND, NY 7699 020301040204 Copper 23.9
AL0080039 GEAR SHOP AND MAINTENANCE FACILITY MOBILE, AL 4491 031602040505 Iron 20.07
AR0050083 KINDER-MORGAN BULK TERMINALS BLYTHEVILLE, AR 4491 080101000602 Iron 6.46
WV0116432 CEREDO DOCK & CEREDO LIQUI CEREDO, WV 4491 050901011007 Selenium 4.22

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