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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 - Fertilizer manufacturing (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
Fluoride, total (as F) 533,674 99.1 99.1
Chlorine, total residual 2,065 0.38 99.5
Nitrogen, ammonia total (as N) 1,386 0.25 99.8
Nitrogen, nitrate total (as N) 475 0.088 99.9
Sulfate, total (as SO4) 171 0.031 99.9
Lead, total recoverable 131 0.024 99.9
Zinc, total recoverable 58.7 0.0109 99.9
Copper, total recoverable 21.9 0.00408 99.9
Zinc, total (as Zn) 20.01 0.0037 99.9
Cadmium, total recoverable 9.032 0.0016 99.9

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Top Receiving Watersheds (2011)
HUC-12 Code HUC Name Total DMR TWPE (lb-eq/yr)
080701000105 Claiborne Island 533,791
080903010101 Bayou Napoleon-Bayou Verret 736
080402010407 Haynes Creek 603
080302060706 Jonestown Cut-Off-Yazoo River 230
110701050205 Moss Creek-Verdigris River 87.8
102702020404 Snake Creek-Big Blue River 84.7
170800030700 Lower Columbia-Clatskanie 20.5
110500020904 110500020904-Skeleton Creek 15.6
111003010203 Spring Creek-North Canadian River 6.31
080902030303 Lake St Catherine-Frontal Lake Borgne 0.804

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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)
LA0004847 MOSAIC FERTILIZER LLC UNCLE SAM PLANT UNCLE SAM, LA 2874 080701000105 Fluoride 533,623
AL0071978 TESSENDERLO KERELY INC EUFAULA, AL 2873 031300031307 Total Residual Chlorine 2,039
LA0000418 CF INDUSTRIES INC DONALDSONVILLE, LA 2873 080903010101 Ammonia as N 532
AR0000752 EL DORADO CHEMICAL CO EL DORADO, AR 2873 080402010407 Ammonia as N 332
LA0000418 CF INDUSTRIES INC DONALDSONVILLE, LA 2873 080903010101 Nitrogen, nitrate dissolved 173
LA0004847 MOSAIC FERTILIZER LLC UNCLE SAM PLANT UNCLE SAM, LA 2874 080701000105 Sulfate 169
MS0000574 TERRA MISSISSIPPI NITROGEN INC YAZOO, MS 2873 080302060706 Ammonia as N 138
AR0000752 EL DORADO CHEMICAL CO EL DORADO, AR 2873 080402010407 Lead 131
GA0002071 PCS NITROGEN FERTILIZER AUGUSTA, GA 2873 030601060607 Ammonia as N 121
MS0000574 TERRA MISSISSIPPI NITROGEN INC YAZOO, MS 2873 080302060706 Nitrogen, nitrate dissolved 90.08

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