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Discharge Monitoring Report (DMR) Pollutant Loading Tool

The Loading Tool is being transitioned into ECHO to increase user access to data and streamline site maintenance. The beta version is now available for testing. EPA plans to retire this site in late November 2017. Current site functionality will be available in ECHO.

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 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.

Point Source Category Information - Inorganic chemicals manufacturing (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) (2017)
Pollutant Name Total DMR TWPE (lb-eq/yr) % of Category TWPE Cumulative % of
Category TWPE
Hexachlorobenzene 63,861 38.9 38.9
Chloride 51,887 31.6 70.5
Total Residual Chlorine 22,963 14.004 84.5
Fluoride 5,083 3.1001 87.6
Manganese 4,580 2.79 90.4
Aluminum 4,067 2.48 92.9
Iron 1,544 0.94 93.9
Copper 993 0.605 94.5
Ammonia as N 939 0.57 95.08
Benzo[a]pyrene 919 0.56 95.6

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Top Receiving Watersheds (2017)
HUC-12 Code HUC Name Total DMR TWPE (lb-eq/yr)
080701000104 Manchac Point 50,919
050500080303 Tyler Creek-Kanawha River 38,415
041201010606 Town of North Kingsville-Frontal Lake Erie 22,749
080702020801 Bayou Braud 16,701
060400050404 Tennessee River-Beaverdam Creek 10,563
031602040305 Lower Chasaw Creek 3,311
080801030600 Vermilion Bay 1,921
040400010603 Calumet River-Frontal Lake Michigan 1,602
020402050703 Red Lion Creek-Delaware River 1,518
060400060503 Lower Cypress Creek 894

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Top Facility Discharges in Toxic-Weighted Pounds (TWPE) (2017)
NPDES ID Facility Name City, State SIC Code HUC-12 Code Top Pollutant Top Pollutant TWPE (lb-eq/yr)
LA0000329 HONEYWELL INTERNATIONAL BATON ROUGE PLANT BATON ROUGE, LA 2819 080701000104 Hexachlorobenzene 50,294
WV0073679 CLEARON CORPORATION, SOUTH CHARLESTON SOUTH CHARLESTON, WV 2819 050500080303 Chloride 38,333
OH0000523 MILLENNIUM INORGANIC CHEMICALS, INC ASHTABULA, OH 2816 041201010606 Total Residual Chlorine 20,399
LA0006181 HONEYWELL INTERNATIONAL INC - GEISMAR COMPLEX GEISMAR, LA 2819 080702020801 Hexachlorobenzene 13,567
TN0001465 CHEMOURS JOHNSONVILLE PLANT NEW JOHNSONVILLE, TN 2816 060400050404 Chloride 10,265
MS0002232 TRONOX LLC, HAMILTON FACILITY HAMILTON, MS 2816 031601011403 Manganese 4,063
AL0002666 HONEYWELL - UOP LLC CHICKASAW, AL 2819 031602040305 Aluminum 2,796
OH0000523 MILLENNIUM INORGANIC CHEMICALS, INC ASHTABULA, OH 2816 041201010606 Fluoride 2,109
LA0003271 MORTON SALT INC NEW IBERIA, LA 2819 080801030600 Chloride 1,921
IN0000035 PRAXAIR, INC. GARY, IN 2813 040400010603 Total Residual Chlorine 1,602

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