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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 more information on the types of errors identified, see EPA's Technical Support Document for the 2010 Effluent Guidelines Program (PDF) (255 pp, 3.4MB). Because of this review, and EPA's methodology for interpreting data and calculating loads (explained in EPA's Technical Support Document for the Annual Review of Existing Effluent Guidelines and Identification of Potential New Point Source Categories), the calculated loads and category rankings may differ using DMR and TRI data that has not been updated. Data that have been updated by EPA's annual reviews are flagged by green flags designating that a change has been made to a concentration, quantity, or flow value. View a listing of the changes for the most recent annual review (PDF) (1 pg, 7K).

Point Source Category Information - Centralized Waste Treatment (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
Benzidine 20,617 64.7 64.7
Chloride (as Cl) 1,382 4.33 69.09
PCB-1242 1,219 3.82 72.9
PCB-1254 1,180 3.706 76.6
PCB-1016 1,180 3.706 80.3
PCB-1248 1,180 3.706 84.04
PCB-1221 1,180 3.706 87.7
PCB-1232 1,180 3.706 91.4
PCB-1260 1,178 3.701 95.1
Nitrogen, ammonia total (as N) 441 1.38 96.5

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Top Receiving Watersheds (2011)
HUC-12 Code HUC Name Total DMR TWPE (lb-eq/yr)
041300010902 Fourmile Creek-Frontal Lake Ontario 29,408
050100011209 Morse Run-Allegheny River 1,362
041201010606 Town of North Kingsville-Frontal Lake Erie 460
050200061104 Lower Sewickley Creek 102

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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)
NY0072061 CWM CHEMICAL SERVICES - MODEL CITY SITE MODEL CITY, NY 4953 041300010902 Benzidine 20,617
PA0102784 WASTE TREATMENT CORPORATION WARREN, PA 4953 050100011209 Chloride 1,362
NY0072061 CWM CHEMICAL SERVICES - MODEL CITY SITE MODEL CITY, NY 4953 041300010902 Aroclor 1242 1,219
NY0072061 CWM CHEMICAL SERVICES - MODEL CITY SITE MODEL CITY, NY 4953 041300010902 Aroclor 1254 1,180
NY0072061 CWM CHEMICAL SERVICES - MODEL CITY SITE MODEL CITY, NY 4953 041300010902 Aroclor 1232 1,180
NY0072061 CWM CHEMICAL SERVICES - MODEL CITY SITE MODEL CITY, NY 4953 041300010902 Aroclor 1221 1,180
NY0072061 CWM CHEMICAL SERVICES - MODEL CITY SITE MODEL CITY, NY 4953 041300010902 Aroclor 1016 1,180
NY0072061 CWM CHEMICAL SERVICES - MODEL CITY SITE MODEL CITY, NY 4953 041300010902 Aroclor 1248 1,180
NY0072061 CWM CHEMICAL SERVICES - MODEL CITY SITE MODEL CITY, NY 4953 041300010902 Aroclor 1260 1,178
OH0098540 RESERVE ENVIRONMENTAL SERVICES INC * ASHTABULA, OH 041201010606 Ammonia as N 439

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