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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 - 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
Fluoride 1,216 31.1 31.1
Lead 904 23.1 54.3
Copper 490 12.5 66.8
Silver 450 11.5 78.4
Polychlorinated biphenyls 241 6.16 84.5
Aluminum 144 3.701 88.2
Iron 114 2.909 91.2
Manganese 97.2 2.49 93.6
Total Residual Chlorine 63.9 1.63 95.3
Zinc 57.7 1.47 96.8

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Top Receiving Watersheds (2011)
HUC-12 Code HUC Name Total DMR TWPE (lb-eq/yr)
050301011106 Hardin Run-Ohio River 1,222
080204020203 Burris Branch-Bayou Two Prairie 1,056
010900040401 Ten Mile River 703
051100030204 Headwaters Mud River 241
050301030603 City of Warren-Mahoning River 181
041300030605 Mill Creek-Black Creek 98.7
010900030103 Quinsigamond River 75.4
050100070310 Lower Stonycreek River-Conemaugh River 56.6
051202010802 Sly Fork 48.7
020700110106 Tank Creek-Potomac River 20.5

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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)
OH0010910 TITANIUM METALS CORP TORONTO, OH 3356 050301011106 Fluoride 1,139
AR0001163 REMINGTON ARMS LONOKE, AR 3482 080204020203 Lead 805
MA0001791 TEXAS INSTRUMENTS, INC. ATTLEBORO, MA 3356 010900040401 Silver 450
KY0102334 SENSUS PRECISION DIE CASTING RUSSELLVILLE, KY 3363 051100030204 Polychlorinated biphenyls 241
AR0001163 REMINGTON ARMS LONOKE, AR 3482 080204020203 Copper 235
MA0001791 TEXAS INSTRUMENTS, INC. ATTLEBORO, MA 3356 010900040401 Copper 95.7
NY0098817 UNION SCRAP PROCESSING INC NORTH CHILI, NY 3399 041300030605 Iron 90.3
OH0010910 TITANIUM METALS CORP TORONTO, OH 3356 050301011106 Manganese 82.6
OH0010863 RMI TITANIUM COMPANY LLC NILES, OH 3356 050301030603 Fluoride 69.5
OH0010863 RMI TITANIUM COMPANY LLC NILES, OH 3356 050301030603 Total Residual Chlorine 56.07

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