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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 - Superfund Sites (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 1,766 45.1 45.1
Aroclor 1248 1,000 25.5 70.6
Aroclor 1242 826 21.1 91.8
Aroclor 1016 167 4.26 96.08
Total Residual Chlorine 144 3.67 99.7
Aluminum 9.033 0.23 99.9
Zinc 0.21 0.0054 99.9
Iron 0.15 0.0038 100

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Top Receiving Watersheds (2011)
HUC-12 Code HUC Name Total DMR TWPE (lb-eq/yr)
041503050706 Hutchins Creek-Raquette River 3,913

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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)
NY0000540 GM POWERTRAIN - MASSENA PLANT MASSENA, NY 3714 041503050706 Polychlorinated biphenyls 1,766
NY0000540 GM POWERTRAIN - MASSENA PLANT MASSENA, NY 3714 041503050706 Aroclor 1248 1,000
NY0000540 GM POWERTRAIN - MASSENA PLANT MASSENA, NY 3714 041503050706 Aroclor 1242 826
NY0000540 GM POWERTRAIN - MASSENA PLANT MASSENA, NY 3714 041503050706 Aroclor 1016 167
NY0000540 GM POWERTRAIN - MASSENA PLANT MASSENA, NY 3714 041503050706 Total Residual Chlorine 144
NY0000540 GM POWERTRAIN - MASSENA PLANT MASSENA, NY 3714 041503050706 Aluminum 9.033
NY0000540 GM POWERTRAIN - MASSENA PLANT MASSENA, NY 3714 041503050706 Zinc 0.21
NY0000540 GM POWERTRAIN - MASSENA PLANT MASSENA, NY 3714 041503050706 Iron 0.15

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