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 pg, 7K).

Point Source Category Information - Organic chemicals, plastics and synthetic fibers (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
Hexachlorobenzene 399,607  Original DMR load is 713,121 44.4 44.4
Chlorine, total residual 61,593  Original DMR load is 170,617 6.85 51.2
Mercury, total (as Hg) 110,020 12.2 63.5
Cyanide, free (amen. to chlorination) 54,852 6.1005 69.6
Heptachlor epoxide 39,914 4.43 74.07
Benzo(a)pyrene 39,577 4.401 78.4
Fluoride, total (as F) 31,982 3.55 82.02
2,3,7,8-Tetrachlorodibenzo-p-dioxin 18,097 2.012 84.04
Chloride (as Cl) 15,550 1.72 85.7
3,4-Benzofluoranthene 14,230 1.58 87.3

Download All Data

Top Receiving Watersheds (2011)
HUC-12 Code HUC Name Total DMR TWPE (lb-eq/yr)
020802060201 Bailey Creek-James River 396,607  Original DMR load is 710,122
040900040503 Huntington Creek-Frontal Lake Erie 109,087
020402060103 Salem Canal-Whooping John Creek 70,309
020200060305 Papscanee Creek-Hudson River 54,148
080802060302 Bayou Verdine-Calcasieu River 42,774
030202020307 Mosley Creek-Neuse River 22,442
050500080304 Scary Creek-Kanawha River 18,412
120401040703 Vince Bayou-Buffalo Bayou 17,391  Original DMR load is 17,396
080702040302 Hope Canal-Pipeline Canal 14,390
010900040102 Matfield River 13,965

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)
VA0005291 HONEYWELL INTERNATIONAL INC HOPEWELL PLANT HOPEWELL, VA 2869 020802060201 Hexachlorobenzene 313,515  Original DMR load is 627,029
MI0000540 BASF CORP WYANDOTTE, MI 2869 040900040503 Mercury 109,087
TX0006017 CELANESE LTD BAY CITY PLANT BAY CITY, TX 2869 120903020207 Total Residual Chlorine  Original DMR load is 109,025
NY0260738 PORT TERMINAL LTD ALBANY, NY 5169 020200060305 Cyanide 54,015
LA0003336 SASOL NORTH AMERICA INC LAKE CHARLES CHEMICAL COMPLEX WESTLAKE, LA 2869 080802060302 Hexachlorobenzene 39,889
VA0005291 HONEYWELL INTERNATIONAL INC HOPEWELL PLANT HOPEWELL, VA 2869 020802060201 Benzo[a]pyrene 32,405
NJ0005100 DUPONT CHAMBERS WORKS DEEPWATER, NJ 2869 020402060103 Heptachlor epoxide 30,038
NC0003760 DUPONT KINSTON PLANT KINSTON, NC 2824 030202020307 Hexachlorobenzene 18,838
WV0116181 A.K.A. SOLUTIA NITRO SITE NITRO, WV 2869 050500080304 2,3,7,8-Tetrachlorodibenzo-p-dioxin 18,097
NJ0005100 DUPONT CHAMBERS WORKS DEEPWATER, NJ 2869 020402060103 Fluoride 16,595

Download All Data

Top of Page

About the Data Glossary Error Correction Contact Us

Jump to main content.