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 information on the methodology and types of changes identified, see EPA's most recent odd-numbered year Annual Effluent Guidelines Review Report (PDF) (169 pp, 2MB) 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 (PDF) (241 pp, 3.3MB).

Point Source Category Information - Organic chemicals, plastics and synthetic fibers (TRI)

EPA 304M Annual Review icon — Indicates load was altered by EPA’s 304M Annual Review. You can hover over the green flag to see the original load from the TRI data.

Top Chemicals - Toxic-Weighted Pounds (TWPE) (2011)
Chemical Name Direct TRI TWPE (lb-eq/yr) Indirect TRI TWPE (lb-eq/yr) Total TRI TWPE (lb-eq/yr) % of Category TWPE Cumulative % of
Category TWPE
DIOXIN AND DIOXIN-LIKE COMPOUNDS 24,984  Original TRI load is 65,488 5.97 24,989 17.4 17.4
VANADIUM AND VANADIUM COMPOUNDS 17,049 37.8 17,087 11.9 29.4
ACRYLONITRILE 181 14,037 14,217 9.94 39.3
NITRATE COMPOUNDS 12,315 950 13,265 9.27 48.6
MANGANESE AND MANGANESE COMPOUNDS 8,985 207 9,192 6.42 55.07
HYDROQUINONE 5,582 3,212 8,794 6.14 61.2
COPPER AND COPPER COMPOUNDS 7,489 141 7,630 5.33 66.5
CADMIUM AND CADMIUM COMPOUNDS 7,478 13.68 7,492 5.23 71.7
POLYCYCLIC AROMATIC COMPOUNDS 7,214  Original TRI load is 93,379 0.23 7,215 5.045 76.8
COBALT AND COBALT COMPOUNDS 6,475 68.9 6,544 4.57 81.4

Download All Data

Top Receiving Watersheds (2011)
HUC-12 Code HUC Name Direct TRI TWPE (lb-eq/yr) Indirect TRI TWPE (lb-eq/yr) Total TRI TWPE (lb-eq/yr)
080702010402 Devils Swamp-Bayou Baton Rouge 16,819  Original load is 102,984 0 16,819
060101020704 Kendrick Creek-South Fork Holston River 12,690 14.2 12,704
050400010105 Portage Lakes-Tuscarawas River 0 12,048 12,048
080802060302 Bayou Verdine-Calcasieu River 10,714  Original load is 51,219 0 10,714
060300021102 Bakers Creek-Tennessee River 9,893 0.35 9,893
040802010606 Sarle Drain-Tittabawassee River 9,637 0 9,637
020402060103 Salem Canal-Whooping John Creek 6,876 0 6,876
060300021104 Fox Creek 5,767 0 5,767
060200011202 Tennessee River-Nickajack Lake Upper 4,782 9.35 4,791
020802060201 Bailey Creek-James River 3,149 836 3,985

Download All Data

Top Facility Discharges in Toxic-Weighted Pounds (TWPE) (2011)
TRI Facility ID Facility Name City, State NAICS Code HUC-12 Code Top Chemical Top Chemical Direct TRI TWPE (lb-eq/yr) Top Chemical Indirect TRI TWPE (lb-eq/yr) Top Chemical Total TRI TWPE (lb-eq/yr)
70805XXNCH4999S EXXONMOBIL CHEMICAL BATON ROUGE CHEMICAL PLANT (PART) BATON ROUGE, LA 325110 080702010402 VANADIUM AND VANADIUM COMPOUNDS 16,240 0 16,240
44301BFGDR240WE EMERALD POLYMER ADDITIVES LLC AKRON, OH 325199 050400010105 ACRYLONITRILE 0 12,031 12,031
48667THDWCMICHI THE DOW CHEMICAL CO MIDLAND, MI 325199 040802010606 DIOXIN AND DIOXIN-LIKE COMPOUNDS 9,503 0 9,503
35601MNSNTCOURT ASCEND PERFORMANCE MATERIALS OPERATIONS LLC-DECATUR PLANT DECATUR, AL 325199 060300021102 CADMIUM AND CADMIUM COMPOUNDS 7,478 0 7,478
77536SHLLLHIGHW SHELL CHEMICAL LP DEER PARK, TX 325110 DIOXIN AND DIOXIN-LIKE COMPOUNDS 5,464 0 5,464
70669VSTCHOLDSP SASOL CHEMICALS (USA) LLC-LAKE CHARLES CHEMICAL COMPLEX WESTLAKE, LA 325199 080802060302 DIOXIN AND DIOXIN-LIKE COMPOUNDS 5,363  Original load is 45,868 0 5,363
70669VSTCHOLDSP SASOL CHEMICALS (USA) LLC-LAKE CHARLES CHEMICAL COMPLEX WESTLAKE, LA 325199 080802060302 POLYCYCLIC AROMATIC COMPOUNDS 5,134 0 5,134
37415NVSTS451NA INVISTA SA RL CHATTANOOGA, TN 325211 060200011202 DIOXIN AND DIOXIN-LIKE COMPOUNDS 4,653 0 4,653
30903DSMCHNO1CO FIBRANT LLC AUGUSTA, GA 325199 NITRATE COMPOUNDS 3,897 0 3,897
37662TNNSSEASTM EASTMAN CHEMICAL CO TENNESSEE OPERATIONS KINGSPORT, TN 325211 060101020704 ARSENIC AND ARSENIC COMPOUNDS 3,723 4.85 3,728

Download All Data

Top of Page

About the Data Glossary Error Correction Contact Us

Jump to main content.