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 - Nonferrous metals forming and metal powders (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
Lead, total recoverable 849 41.001 41.001
Silver, total (as Ag) 532 25.7 66.7
Copper, total recoverable 246 11.8 78.6
Copper, total (as Cu) 173 8.37 86.9
Aluminum, total (as Al) 85.3 4.12 91.1
Vinyl chloride 60.1 2.904 94.01
Lead, total (as Pb) 58.9 2.84 96.8
Zinc, total (as Zn) 16.06 0.77 97.6
Iron, total (as Fe) 13.2 0.64 98.2
Nickel, total (as Ni) 10.08 0.48 98.7

Download All Data

Top Receiving Watersheds (2011)
HUC-12 Code HUC Name Total DMR TWPE (lb-eq/yr)
010900040401 Ten Mile River 803
010900030103 Quinsigamond River 75.7
050100070310 Lower Stonycreek River-Conemaugh River 57.1
110902040402 Bull Creek & Brown Lake 7.41
120401040201 Langham Creek 6.409
020402020305 Swede Run-Delaware River 1.024

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)
AR0001163 REMINGTON ARMS LONOKE, AR 3482 Lead 805
MA0001791 SENSATA TECHNOLOGIES ATTLEBORO, MA 3356 010900040401 Silver 532
AR0001163 REMINGTON ARMS LONOKE, AR 3482 Copper 238
MA0001791 SENSATA TECHNOLOGIES ATTLEBORO, MA 3356 010900040401 Copper 96.8
MA0001791 SENSATA TECHNOLOGIES ATTLEBORO, MA 3356 010900040401 Vinyl chloride 60.1
MA0001791 SENSATA TECHNOLOGIES ATTLEBORO, MA 3356 010900040401 Lead 54.1
PA0110591 OMG AMER JOHNSTOWN PLT JOHNSTOWN, PA 3399 050100070310 Copper 47.2
MA0004341 WYMAN GORDON PLANT NORTH GRAFTON, MA 3463 010900030103 Aluminum 44.1
MA0001791 SENSATA TECHNOLOGIES ATTLEBORO, MA 3356 010900040401 Aluminum 41.1

Download All Data

Top of Page

About the Data Glossary Error Correction Contact Us

Jump to main content.