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 - Metal molding and casting (foundries) (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
MANGANESE AND MANGANESE COMPOUNDS 3,377 19.5 3,396 37.4 37.4
LEAD AND LEAD COMPOUNDS 2,793 162 2,954 32.5 70.01
COPPER AND COPPER COMPOUNDS 1,429 15.8 1,445 15.9 85.9
ZINC AND ZINC COMPOUNDS 1,064 6.705 1,070 11.8 97.7
NICKEL AND NICKEL COMPOUNDS 70.8 6.82 77.6 0.85 98.6
SODIUM NITRITE 0 77.5 77.5 0.85 99.4
CHROMIUM AND CHROMIUM COMPOUNDS 16.2 2.17 18.4 0.203 99.6
MERCURY AND MERCURY COMPOUNDS 5.85 0.65 6.51 0.071 99.7
NITRATE COMPOUNDS 0 5.99 5.99 0.066 99.8
1,2,4-TRIMETHYLBENZENE 4.54 0 4.54 0.05005 99.8

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)
050400040301 Robinson Run-Muskingum River 5,968 0.59 5,968
050600012302 Kian Run-Scioto River 783 0 783
020501040902 Johnson Creek 273 0.038 273
040301080913 Menominee River 197 1.033 198
020802030305 Opossum Creek-James River 38 109 147
040301010302 Spring Creek 101 0.13 101
102300060602 Lake Manawa-Missouri River 97.7 0 97.7
050100040906 Van Home Creek-French Creek 0 81.1 81.1
041000090201 Preston Run-Maumee River 72.7 1.23 73.9
041100010506 Lower West Branch Black River 54.2 0 54.2

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)
43812CLWWT2266S MCWANE DUCTILE OHIO COSHOCTON, OH 331511 050400040301 MANGANESE AND MANGANESE COMPOUNDS 3,244 0.55 3,244
43812CLWWT2266S MCWANE DUCTILE OHIO COSHOCTON, OH 331511 050400040301 LEAD AND LEAD COMPOUNDS 1,113 0.017 1,113
43812CLWWT2266S MCWANE DUCTILE OHIO COSHOCTON, OH 331511 050400040301 COPPER AND COPPER COMPOUNDS 871 0.015 871
43812CLWWT2266S MCWANE DUCTILE OHIO COSHOCTON, OH 331511 050400040301 ZINC AND ZINC COMPOUNDS 740 0.0034 740
43207BCKYS2211P COLUMBUS CASTINGS COLUMBUS, OH 331513 050600012302 LEAD AND LEAD COMPOUNDS 612 0 612
16912WRDMN115GU WARD MANUFACTURING LLC BLOSSBURG, PA 331511 020501040902 LEAD AND LEAD COMPOUNDS 273 0.038 273
54143WPCFN805OD WAUPACA FOUNDRY - PLANT 4 MARINETTE, WI 331511 040301080913 COPPER AND COPPER COMPOUNDS 158 0.504 158
35023NTDST2023S US PIPE & FOUNDRY CO LLC BESSEMER, AL 331511 031601120101 ZINC AND ZINC COMPOUNDS 148 0 148
24505GRFFNADAMS GRIFFIN PIPE PRODUCTS CO LYNCHBURG, VA 331511 020802030305 LEAD AND LEAD COMPOUNDS 26.88 104 131
53188WSCNS905EA METALTEK INTERNATIONAL-WISCO NSIN CENTRIFUGAL DIV WAUKESHA, WI 331513 COPPER AND COPPER COMPOUNDS 112 2.31 114

Download All Data

Top of Page

About the Data Glossary Error Correction Contact Us

Jump to main content.