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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).

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Point Source Category Information - Metal molding and casting (foundries) (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
Polychlorinated biphenyls (PCBs) 8,532 88.6 88.6
Chlorine, total residual 457 4.74 93.3
Lead, total recoverable 114 1.18 94.5
Lead, total (as Pb) 103 1.067 95.6
Nitrogen, nitrate total (as N) 102 1.064 96.6
Cadmium, total recoverable 79.8 0.82 97.5
Nitrogen, ammonia total (as N) 38.7 0.402 97.9
Copper, total (as Cu) 32.2 0.33 98.2
Copper, total recoverable 27.8 0.28 98.5
Iron, total (as Fe) 24.1 0.25 98.7

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Top Receiving Watersheds (2011)
HUC-12 Code HUC Name Total DMR TWPE (lb-eq/yr)
051201090901 Butter Branch-Vermilion River 6,434
051202080806 Wolf Creek-Salt Creek 2,133
071300030601 Little Lamaresh Creek-Illinois River 283
031601110105 Upper Slab Creek 131
102300060602 Lake Manawa-Missouri River 27.9
070900050407 Lake Louise-Rock River 23.9
051201060205 Ruple Ditch-Tippecanoe River 10.5
051201080603 Fall Branch-Wabash River 9.89
051202011202 Bean Creek-Pleasant Run 8.42
100301021201 Missouri River-Great Falls 4.73

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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)
IL0004138 GENERAL MOTORS CORP POWERTRAIN DIV. DANVILLE, IL 3321 051201090901 Polychlorinated biphenyls (PCBs) 6,412
IN0003573 GENERAL MOTORS LLC-BEDFORD CETC BEDFORD, IN 3365 051202080806 Polychlorinated biphenyls (PCBs) 2,120
IL0001830 CATERPILLAR INC.-MAPLETON MAPLETON, IL 3321 071300030601 Chlorine, total residual 282
AL0001791 MCWANE CAST IRON PIPE COMPANY BIRMINGHAM, AL 3321 031601110408 Lead, total recoverable 111
AL0076309 GLIDEWELL SPECIALTIES FOUNDRY CALERA, AL 3321 031501070405 Chlorine, total residual 108
AL0076309 GLIDEWELL SPECIALTIES FOUNDRY CALERA, AL 3321 031501070405 Nitrogen, nitrate total (as N) 102
TX0001465 TYLER PIPE TYLER, TX 3321 120100020104 Lead, total (as Pb) 83.9
AL0055026 MUELLER CO ALBERTVILLE, AL 3321 031601110105 Cadmium, total recoverable 79.8
AL0055026 MUELLER CO ALBERTVILLE, AL 3321 031601110105 Chlorine, total residual 46.4
AL0076309 GLIDEWELL SPECIALTIES FOUNDRY CALERA, AL 3321 031501070405 Nitrogen, ammonia total (as N) 37.7

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