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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 p, 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
Sulfide, total (as S) 4,334 55.1 55.1
Chloride (as Cl) 1,382 17.5 72.6
Nitrogen, ammonia total (as N) 453 5.75 78.4
Arsenic, total (as As) 378 4.806 83.2
Cadmium, total (as Cd) 318 4.044 87.2
PCB-1016 248 3.15 90.4
Molybdenum, total (as Mo) 106 1.34 91.7
Silver, total (as Ag) 84.3 1.073 92.8
Copper, total (as Cu) 76.3 0.97 93.8
Lead, total (as Pb) 55.9 0.71 94.5

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Top Receiving Watersheds (2011)
HUC-12 Code HUC Name Total DMR TWPE (lb-eq/yr)
041201010606 Town of North Kingsville-Frontal Lake Erie 514
080702010401 Cypress Bayou-Bayou Baton Rouge 431
041300010902 Fourmile Creek-Frontal Lake Ontario 323
050200061104 Lower Sewickley Creek 159
120401040703 Vince Bayou-Buffalo Bayou 121

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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)
TX0062677 LNVA - NORTH REGIONAL TREATMENT PLANT (PART) BEAUMONT, TX 2911 120200030406 Sulfide 4,334
PA0102784 WASTE TREATMENT CORPORATION WARREN, PA 4953 Chloride 1,362
OH0098540 RESERVE ENVIRONMENTAL SERVICES INC * ASHTABULA, OH 9999 041201010606 Ammonia as N 439
NY0072061 CWM CHEMICAL SERVICES - MODEL CITY SITE MODEL CITY, NY 4953 041300010902 Aroclor 1016 248
LA0038245 CLEAN HARBORS BATON ROUGE LLC BATON ROUGE, LA 4953 080702010401 Cadmium 188
LA0038245 CLEAN HARBORS BATON ROUGE LLC BATON ROUGE, LA 4953 080702010401 Arsenic 176
LA0065501 CLEAN HARBORS WHITE CASTLE LLC - LANDFARM FACILITY WHITE CASTLE, LA 4953 Arsenic 143
PA0027715 MAX ENVIRONMENTAL -- YUKON FACILITY YUKON, PA 4953 050200061104 Molybdenum 98.4
TX0091855 ENTERPRISE PRODUCTS - OIL TANKING FACILITY HOUSTON, TX 4953 Cadmium 85.7
TX0030937 VOPAK LOGISTICS SERVICES USA INC DEER PARK DEER PARK, TX 4953 120401040703 Silver 54.4

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