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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 - Mineral Mining and Processing (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
Fluoride 11,975 31.8 31.8
Chloride 9,173 24.3 56.1
Mercury 5,713 15.1 71.3
Aluminum 3,025 8.033 79.3
Manganese 1,824 4.84 84.2
Total Residual Chlorine 1,485 3.94 88.1
Sulfate 1,027 2.72 90.8
Sulfide 677 1.79 92.6
Iron 594 1.57 94.2
Selenium 589 1.56 95.8

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Top Receiving Watersheds (2011)
HUC-12 Code HUC Name Total DMR TWPE (lb-eq/yr)
071401050306 Rockwood Island-Mississippi River 5,712
050302011009 Cow Creek-Ohio River 4,564
060101080104 Grassy Creek-North Toe River 1,715
041100040607 Red Creek-Grand River 1,191
050400011105 Brandywine Creek-Sugar Creek 1,137
031002030101 Alderman Creek 1,075
060101080106 Bear Creek-North Toe River 1,007
041000010101 Mouille Creek-Frontal Lake Erie 882
041201040605 Niagara Falls-Niagara River 834
031001010405 Thompson Branch 830

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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)
IL0060674 CORA TERMINAL ROCKWOOD, IL 1422 071401050306 Mercury 5,704
FL0000655 PCS PHOSPHATE WHITE SPRINGS WHITE SPRINGS, FL 1479 031102010901 Fluoride 5,565
TX0112038 CEDAR LAKE PLANT SEAGRAVES, TX 1474 120800040603 Chloride 5,453
WV0112640 SELECT ENERGY SERVICES, LLC ST. MARY'S, WV 5032 050302011009 Aluminum 2,805
NC0000353 FELDSPAR SPRUCE PINE, NC 1459 060101080104 Fluoride 1,711
OH0008141 BELDEN BRICK CO PLANT 3 SUGARCREEK, OH 3251 050400011105 Manganese 1,123
OH0000515 MORTON INTERNATIONAL PAINESVILLE, OH 1479 041100040607 Chloride 1,072
FL0027600 MOSAIC FERTILIZER LLC - NEW WALES PLANT MULBERRY, FL 1475 031002030101 Fluoride 1,036
NC0000400 QUARTZ CORP / PINE MOUNTAIN SPRUCE PINE, NC 1459 060101080106 Fluoride 847
FL0037958 MOSAIC FERTILIZER, LLC - SOUTH FT MEADE MINE NICHOLS, FL 1475 031001010405 Fluoride 813

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