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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) (2011)
Pollutant Name Total DMR TWPE (lb-eq/yr) % of Category TWPE Cumulative % of
Category TWPE
Polychlorinated biphenyls 30,784 36.1 36.1
Sodium sulfate 16,678 19.5 55.6
Total Residual Chlorine 6,846 8.029 63.6
Chloride 6,658 7.808 71.5
Fluoride 4,587 5.37 76.8
Nickel 3,399 3.98 80.8
Manganese 1,910 2.23 83.1
Thallium 1,606 1.88 84.9

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Top Receiving Watersheds (2011)
HUC-12 Code HUC Name Total DMR TWPE (lb-eq/yr)
080701000104 Manchac Point 1,344  Original DMR load is 107,564
051402060701 Bayou Creek-Ohio River 32,190
020503061713 Rock Run-Susquehanna River 16,678
060400050404 Tennessee River-Beaverdam Creek 8,094
040400010603 Calumet River-Frontal Lake Michigan 4,879
080802060303 Calcasieu River-Prien Lake 3,646
031002040103 English Creek 1,764
020600031202 Curtis Creek-Curtis Bay 1,662
041201010606 Town of North Kingsville-Frontal Lake Erie 1,568
080702020801 Bayou Braud 1,116

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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)
LA0000329 HONEYWELL INTERNATIONAL BATON ROUGE PLANT BATON ROUGE, LA 2819 080701000104 Hexachlorobenzene 0  Original DMR load is 98,948
KY0004049 FLUOR FEDERAL SERVICES INC - PADUCAH GASEOUS DIFFUSION PLANT KEVIL, KY 2819 051402060701 Polychlorinated biphenyls 30,784
MD0000531 HUBER, J.M. CORPORATION HAVRE DE GRACE, MD 2819 020503061713 Sodium sulfate 16,678
TN0001465 CHEMOURS JOHNSONVILLE PLANT NEW JOHNSONVILLE, TN 2816 060400050404 Chloride 5,045
IN0000035 PRAXAIR, INC. GARY, IN 2813 040400010603 Total Residual Chlorine 4,879
LA0000329 HONEYWELL INTERNATIONAL BATON ROUGE PLANT BATON ROUGE, LA 2819 080701000104 Benzo[a]pyrene 0  Original DMR load is 2,390
LA0080829 LOUISIANA PIGMENT COMPANY, L.P. WESTLAKE, LA 2819 080802060303 Thallium 1,599
LA0000329 HONEYWELL INTERNATIONAL BATON ROUGE PLANT BATON ROUGE, LA 2819 080701000104 Chrysene 0  Original DMR load is 1,303
LA0000329 HONEYWELL INTERNATIONAL BATON ROUGE PLANT BATON ROUGE, LA 2819 080701000104 Benzo[k]fluoranthene 0  Original DMR load is 1,289

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