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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 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.

Point Source Category Information - Independent and stand alone labs (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
Lead 204 27.6 27.6
Total Residual Chlorine 196 26.6 54.2
Copper 138 18.7 73.01
Chloride 79.2 10.7 83.7
Silver 39.4 5.35 89.1
Cadmium 22.4 3.052 92.1
Mercury 13.7 1.86 94.03
Aluminum 9.79 1.32 95.3
Zinc 7.85 1.065 96.4
Iron 6.58 0.89 97.3

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Top Receiving Watersheds (2011)
HUC-12 Code HUC Name Total DMR TWPE (lb-eq/yr)
020302020501 Upper Peconic River 102
031001010301 North Bear Branch 67.3
041201040604 City of North Tonawanda-Niagara River 58.3
020301050504 Green Brook 50.04
011000040303 Milford Harbor-Frontal Long Island Sound 47.06
120401040302 Cole Creek-Whiteoak Bayou 17.6
050600011103 Mouth Olentangy River 16.6
040900050204 Mill Creek 12.4
020501050308 Hodgmans Creek-Cohocton River 11.6
020200080306 Wiccopee Creek-Fishkill Creek 5.85

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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)
NY0007030 GE GLOBAL RESEARCH CENTER SCHENECTADY, NY 8731 020200041109 Lead 193
FL0715093 UNKNOWN TAMPA, FL 8731 031001010301 Chloride 61.7
NY0001201 ISLECHEM BUSINESS CENTER GRAND ISLAND, NY 8731 041201040604 Total Residual Chlorine 58.3
CT0090182 NATIONAL MARINE FISHERIES MILFORD, CT 8731 011000040303 Total Residual Chlorine 47.06
NJ0140155 ALCATEL-LUCENT. MURRAY HILL, NJ 8731 020301050504 Copper 44.5
NY0007030 GE GLOBAL RESEARCH CENTER SCHENECTADY, NY 8731 020200041109 Total Residual Chlorine 42.9
NY0007030 GE GLOBAL RESEARCH CENTER SCHENECTADY, NY 8731 020200041109 Copper 35.7
NH0022055 ENVIROSYSTEMS HAMPTON, NH 8734 010700060903 Cadmium 22.4

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