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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 - Pesticide chemicals (TRI)

EPA 304M Annual Review icon — Indicates load was altered by EPA’s 304M Annual Review. You can hover over the green flag to see the original load from the TRI data.

Top Chemicals - Toxic-Weighted Pounds (TWPE) (2011)
Chemical Name Direct TRI TWPE (lb-eq/yr) Indirect TRI TWPE (lb-eq/yr) Total TRI TWPE (lb-eq/yr) % of Category TWPE Cumulative % of
Category TWPE
TOXAPHENE 337,396 0 337,396 90.2 90.2
CHLORDANE 17,241 0 17,241 4.61 94.8
DIAZINON 3,111 249 3,111 0.83 95.6
CARBARYL 2,800 0 2,800 0.74 96.4
NITRATE COMPOUNDS 1,407 13.8 1,407 0.37 96.8
COPPER AND COPPER COMPOUNDS 972 0 972 0.26 97.06
HEXACHLOROBENZENE 935 0 935 0.25 97.3
ARSENIC AND ARSENIC COMPOUNDS 358 0 358 0.095 97.4
MALATHION 280 0 280 0.074 97.4
COBALT AND COBALT COMPOUNDS 244 0 244 0.065 97.5

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Top Receiving Watersheds (2011)
HUC-12 Code HUC Name Direct TRI TWPE (lb-eq/yr) Indirect TRI TWPE (lb-eq/yr) Total TRI TWPE (lb-eq/yr)
071401010506 River Des Peres 1,447 0 1,447
080903010303 Boutte-Grand Bayou 1,158 0 1,158
120401040606 Lower Greens Bayou 995 0 995
080701000105 Claiborne Island 811 0 811
040802010606 Sarle Drain-Tittabawassee River 95.4 0 95.4
103001010106 Blue River Outlet 58.06 0 58.06
070801010705 Boston Bay-Mississippi River 51.2 0 51.2
080302040800 29.3 0 29.3
071100011006 Curtis Creek-Mississippi River 18.7 0 18.7
071000050702 Brewers Creek 1.24 0 1.24

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Top Facility Discharges in Toxic-Weighted Pounds (TWPE) (2011)
TRI Facility ID Facility Name City, State NAICS Code HUC-12 Code Top Chemical Top Chemcical Direct TRI TWPE (lb-eq/yr) Top Chemcical Indirect TRI TWPE (lb-eq/yr) Top Chemcical Total TRI TWPE (lb-eq/yr)
29045HRDWC2114L WEYLCHEM US INC ELGIN, SC 325199 030501040401 TOXAPHENE 337,396 0 337,396
29045HRDWC2114L WEYLCHEM US INC ELGIN, SC 325199 030501040401 CHLORDANE 17,241 0 17,241
31015DRXLCHIGHW DREXEL CHEMICAL CO CORDELE, GA 325320 DIAZINON 3,111 0 3,111
31015DRXLCHIGHW DREXEL CHEMICAL CO CORDELE, GA 325320 CARBARYL 1,400 0 1,400
63111RHNPL133EK AGRAFORM SAINT LOUIS, MO 325320 071401010506 CARBARYL 1,400 0 1,400
77015FRMNT2239H GB BIOSCIENCES CORP HOUSTON, TX 325320 120401040606 HEXACHLOROBENZENE 935 0 935
70070MNSNTRIVER MONSANTO LULING LULING, LA 325320 080903010303 COPPER AND COPPER COMPOUNDS 655 0 655
70776CBGGYRIVER SYNGENTA CROP PROTECTION INC SAINT GABRIEL FACILITY SAINT GABRIEL, LA 325320 080701000105 NITRATE COMPOUNDS 457 0 457
77571DPNTL12501 DUPONT LA PORTE PLANT LA PORTE, TX 325320 NITRATE COMPOUNDS 426 0 426
25112RHNPLROUTE BAYER CROPSCIENCE LP INSTITUTE, WV 325320 NITRATE COMPOUNDS 367 0 367

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