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 - Nonferrous metals 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
Cadmium 132,827 33.9 33.9
Polychlorinated biphenyls 59,054 15.07 48.9
Mercury 54,920 14.02 63.009
Vanadium 54,026 13.7 76.8
Lead 25,566 6.52 83.3
Aluminum 12,461 3.18 86.5
Zinc 11,747 2.99 89.5
Free Available Chlorine 11,569 2.95 92.4
Fluoride 9,299 2.37 94.8
Copper 7,206 1.83 96.6

Download All Data

Top Receiving Watersheds (2011)
HUC-12 Code HUC Name Total DMR TWPE (lb-eq/yr)
051302050308 Cummings Creek-Cumberland River 136,658
031602040505 Tensaw River-Apalachee River 57,317
051402060701 Bayou Creek-Ohio River 56,745
080401010806 Lake Hamilton Dam 53,383
080202020301 Upper Big Creek 27,574
050301010310 Sixmile Run-Ohio River 11,656
060102010108 Pistol Creek 9,446
041100020604 Cuyahoga Heights-Cuyahoga River 6,654
120402050400 Lower Oyster Creek 4,331
071401010804 Lower Joachim Creek 2,975

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)
TN0029157 NYRSTAR CLARKSVILLE INC CLARKSVILLE, TN 3339 051302050308 Cadmium 110,661
KY0102083 US DOE PADUCAH SITE KEVIL, KY 2819 051402060701 Polychlorinated biphenyls 56,719
AL0002976 ALCOA MOBILE, AL 2819 031602040505 Mercury 54,919
AR0000523 EVRAZ STRATCOR INC HOT SPRINGS, AR 3339 080401010806 Vanadium 53,174
MO0001121 DOE RUN CO GLOVER SMELTER ANNAPOLIS, MO 3339 080202020301 Cadmium 18,993
TN0029157 NYRSTAR CLARKSVILLE INC CLARKSVILLE, TN 3339 051302050308 Lead 12,103
PA0002208 HORSEHEAD CORP MONACA SMELTER MONACA, PA 3339 050301010310 Free Available Chlorine 11,569
TN0029157 NYRSTAR CLARKSVILLE INC CLARKSVILLE, TN 3339 051302050308 Zinc 9,206
MO0001121 DOE RUN CO GLOVER SMELTER ANNAPOLIS, MO 3339 080202020301 Lead 6,490
AL0066052 SANDERS LEAD COMPANY INCORPORATED TROY, AL 3341 031403010205 Lead 6,020

Download All Data

Top of Page

About the Data Glossary Error Correction Contact Us

Jump to main content.