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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 - Inorganic chemicals 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
Cadmium, total (as Cd) 43,565 78.05 78.05
Chloride (as Cl) 5,592 10.01 88.07
Phosphorus (reactive as P) 2,654 4.75 92.8
Iron, total (as Fe) 557 0.99 93.8
Fluoride, total (as F) 452 0.809 94.6
Aluminum, total (as Al) 407 0.72 95.3
Titanium, total (as Ti) 390 0.69 96.06
Copper, total (as Cu) 294 0.52 96.5
Nitrogen, ammonia total (as N) 253 0.45 97.04
Arsenic, total recoverable 203 0.36 97.4

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Top Receiving Watersheds (2011)
HUC-12 Code HUC Name Total DMR TWPE (lb-eq/yr)
020402050703 Red Lion Creek-Delaware River 44,312
060400050404 Tennessee River-Beaverdam Creek 5,050
080802060303 Calcasieu River-Prien Lake 390
050500080303 Tyler Creek-Kanawha River 238
080702010402 Devils Swamp-Bayou Baton Rouge 206
020402050602 Stoney Creek 122
020402020607 Repaupo Creek-Delaware River 48.6
121102020107 Tule Lake 43.3
080702040201 St James Parish Canal 34.7
111101030908 Outlet Illinois River 34.04

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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)
DE0050601 DELAWARE CITY POWER PLANT/VALERO REFINERY DELAWARE CITY, DE 2819 020402050703 Cadmium 43,516
TN0001465 DUPONT JOHNSONVILLE PLANT NEW JOHNSONVILLE, TN 2816 060400050404 Chloride 5,045
NY0002275 HONEYWELL INTERNATIONAL INC SOLVAY, NY 2812 041402011509 Phosphorus 2,654
IL0002020 OLIN CORP JOLIET, IL 2819 071200040905 Fluoride 397
LA0080829 LOUISIANA PIGMENT COMPANY, L.P. WESTLAKE, LA 2819 080802060303 Titanium 390
DE0050601 DELAWARE CITY POWER PLANT/VALERO REFINERY DELAWARE CITY, DE 2819 020402050703 Iron 350
DE0050601 DELAWARE CITY POWER PLANT/VALERO REFINERY DELAWARE CITY, DE 2819 020402050703 Copper 253
NC0003875 ELEMENTIS CHROMIUM INC CASTLE HAYNE, NC 2819 030300070807 Chloride 227
NY0110043 PVS CHEMICAL SOLUTIONS BUFFALO, NY 2819 041201030306 Aluminum 226
MT0000230 MONTANA SULPHUR & CHEMICAL CO BILLINGS, MT 2819 100700070403 Arsenic 203

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