Jump to main content or area navigation.

Contact Us

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 (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
POLYCYCLIC AROMATIC COMPOUNDS 14,361  Original TRI load is 15,478 15.3 14,376 36.5 36.5
DIAMINOTOLUENE (MIXED ISOMERS) 0 7,229 7,229 18.3 54.9
ARSENIC AND ARSENIC COMPOUNDS 5,254 1.21 5,255 13.3 68.2
NITRATE COMPOUNDS 1,494 1,585 3,079 7.82 76.1
O-TOLUIDINE 0 1,668 1,668 4.23 80.3
ALLYL ALCOHOL 0 1,531 1,531 3.89 84.2
MANGANESE AND MANGANESE COMPOUNDS 1,013 8.23 1,022 2.59 86.8
VANADIUM AND VANADIUM COMPOUNDS 383 523 906 2.303 89.1
LEAD AND LEAD COMPOUNDS 758 84.9 843 2.14 91.2
COPPER AND COPPER COMPOUNDS 368 170 538 1.36 92.6

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)
080801020903 Yokely Bayou-Frontal Intercoastal Waterway 14,338  Original load is 15,455 0 14,338
120401040703 Vince Bayou-Buffalo Bayou 114 9,577 9,691
080702020801 Bayou Braud 5,249 0 5,249
050400010103 Hudson Run 0 1,558 1,558
020401050603 Buckhorn Creek-Delaware River 907 0 907
120401040706 Goose Creek-Frontal Galveston Bay 537 0 537
060400050402 Tennessee River-Indian Creek 531 0 531
020600031202 Curtis Creek-Curtis Bay 406 0 406
080102090406 Loosahatchie River-Outlet 15.9 354 370
041201010406 Presque Isle Bay-Frontal Lake Erie 2.17 344 346

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)
70583CBTCRSTATE CABOT CORP CANAL PLANT CENTERVILLE, LA 325180 080801020903 POLYCYCLIC AROMATIC COMPOUNDS 14,334 0 14,334
77506RPRDC1423H AIR PRODUCTS LLC PASADENA, TX 325120 120401040703 DIAMINOTOLUENE (MIXED ISOMERS) 0 7,229 7,229
70734LLDSGHWY31 HONEYWELL INTERNATIONAL INC GEISMAR PLANT CARVILLE, LA 325120 080702020801 ARSENIC AND ARSENIC COMPOUNDS 5,229 0 5,229
77506RPRDC1423H AIR PRODUCTS LLC PASADENA, TX 325120 120401040703 O-TOLUIDINE 0 1,668 1,668
44203PPGND4829F PPG INDUSTRIES INC BARBERTON BARBERTON, OH 325180 050400010103 ALLYL ALCOHOL 0 1,531 1,531
45212THSHP4900B SHEPHERD CHEMICAL CO CINCINNATI, OH 325180 NITRATE COMPOUNDS 0.0306 722 722
77536NTRXM1230B SOLVAY CHEMICALS INC LA PORTE, TX 325180 120401040706 NITRATE COMPOUNDS 537 0 537
77506RPRDC1423H AIR PRODUCTS LLC PASADENA, TX 325120 120401040703 DINITROTOLUENE (MIXED ISOMERS) 0 532 532
37134CHMTLFOOTE PRINCE ERACHEM INC - NEW JOHNSONVILLE FACILITY NEW JOHNSONVILLE, TN 325180 060400050402 MANGANESE AND MANGANESE COMPOUNDS 531 0 531
40210NTDCT1227S CLARIANT CORP 12TH STREET FACILITY LOUISVILLE, KY 325180 NITRATE COMPOUNDS 0 384 384

Download All Data

Top of Page

About the Data Glossary Error Correction Contact Us

Jump to main content.