Jump to main content or area navigation.

Contact Us

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 - 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
Fluoride, total (as F) 54,403  Original DMR load is 1,762,749 24.8 24.8
Polychlorinated biphenyls (PCBs) 48,087 21.9 46.7
Tin, total recoverable 20,502 9.34 56.08
PCB-1242 20,203 9.21 65.3
Sodium sulfate, total 16,740 7.63 72.9
Chlorine, total residual 7,932 3.61 76.5
Chloride (as Cl) 7,714 3.51 80.06
Sulfide, total 7,574 3.45 83.5
Aluminum, total (as Al) 6,399 2.91 86.4

Download All Data

Top Receiving Watersheds (2011)
HUC-12 Code HUC Name Total DMR TWPE (lb-eq/yr)
051402060701 Bayou Creek-Ohio River 32,150
103001010301 Buckeye Creek-Missouri River 17,383
060400050404 Tennessee River-Beaverdam Creek 8,094
040400010603 Calumet River-Frontal Lake Michigan 4,879
071401010804 Lower Joachim Creek 3,014
060300021102 Bakers Creek-Tennessee River 1,662
080802060301 Maple Fork-Bayou D'Inde 1,631
020600031202 Curtis Creek-Curtis Bay 1,443
110702070901 Turkey Creek 1,117
080701000105 Claiborne Island 1,116

Download All Data

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)
LA0029769 MOSAIC PHOSPHATES CO FAUSTINA PLANT DONALDSONVILLE, LA 2819 Fluoride 49,955  Original DMR load is 1,758,300
LA0000329 HONEYWELL INTERNATIONAL INC - BATON ROUGE PLANT BATON ROUGE, LA 2819 Hexachlorobenzene 0  Original DMR load is 98,948
KY0004049 U.S. DOE PADUCAH SITE WEST PADUCAH, KY 2819 051402060701 Polychlorinated biphenyls 30,784
KY0001431 ARKEMA INC CARROLLTON, KY 2819 Tin 20,502
AL0001201 SOLUTIA INC ANNISTON PLANT ANNISTON, AL 2819 031501060505 Aroclor 1242 20,203
MO0108472 CONSERVATION CHEMICAL COMPANY KANSAS CITY , MO 2819 103001010301 Polychlorinated biphenyls 17,303
MD0000531 HUBER, J.M. CORPORATION HAVRE DE GRACE, MD 2819 020503061713 Sodium sulfate 16,740
GA0000281 CHEMICAL PRODUCTS TECHNOLOGIES CARTERSVILLE, GA 2819 031501041301 Sulfide 7,574
LA0029769 MOSAIC PHOSPHATES CO FAUSTINA PLANT DONALDSONVILLE, LA 2819 Aluminum 5,964
TN0001465 DUPONT JOHNSONVILLE PLANT NEW JOHNSONVILLE, TN 2816 060400050404 Chloride 5,045

Download All Data

Top of Page

About the Data Glossary Error Correction Contact Us

Jump to main content.