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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 information on the methodology and types of changes identified, see EPA's most recent odd-numbered year Annual Effluent Guidelines Review Report (PDF) (169 pp, 2MB) on the Effluent Guidelines Plan webpage. Because of this review and EPA's methodology for interpreting data and calculating loads, the calculated loads and category rankings may differ from original calculations using DMR and TRI data that have not been updated. Data that have been updated by EPA's annual reviews are indicated by green flags designating that a change has been made to a concentration, quantity, or flow value. A listing of the DMR and TRI data changes from the most recent annual review is available in the Annual Effluent Guidelines Review Report Appendices (PDF) (241 pp, 3.3MB).

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Point Source Category Information - Waste combustors (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) 2,961 54.6 54.6
Arsenic, total (as As) 742 13.6 68.3
Selenium, total (as Se) 561 10.3 78.6
Silver, total (as Ag) 287 5.29 83.9
Lead, total (as Pb) 212 3.905 87.8
Aluminum, total (as Al) 128  Original DMR load is 128 2.35 90.2
Zinc, total (as Zn) 106  Original DMR load is 106 1.95 92.1
Fluoride, total (as F) 80.3 1.48 93.6
Nickel, total (as Ni) 78.9  Original DMR load is 78.9 1.45 95.1
Mercury, total (as Hg) 77.4 1.42 96.5

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Top Receiving Watersheds (2011)
HUC-12 Code HUC Name Total DMR TWPE (lb-eq/yr)
120401040706 Goose Creek-Frontal Galveston Bay 5,073
080401020502 Deceiper Creek-Ouachita River 80.6
020402020606 Raccoon Creek 28.7
050301011103 Carpenter Run-Ohio River 27.5
080402020501 Boggy Creek 3.48
110702070606 Grove Creek-Center Creek 0.14
010900010901 Monatiquot River-Frontal Quincy Bay 0.0052  Original DMR load is 0.0055

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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)
TX0005941 CLEAN HARBORS DEER PARK LLC LA PORTE, TX 4953 120401040706 Cadmium, total (as Cd) 2,941
TX0005941 CLEAN HARBORS DEER PARK LLC LA PORTE, TX 4953 120401040706 Arsenic, total (as As) 737
TX0005941 CLEAN HARBORS DEER PARK LLC LA PORTE, TX 4953 120401040706 Selenium, total (as Se) 561
TX0005941 CLEAN HARBORS DEER PARK LLC LA PORTE, TX 4953 120401040706 Silver, total (as Ag) 282
TX0005941 CLEAN HARBORS DEER PARK LLC LA PORTE, TX 4953 120401040706 Lead, total (as Pb) 195
TX0083828 VEOLIA ES TECHNICAL SOLUTIONS LLC PORT ARTHUR FACILITY PORT ARTHUR, TX 4953 120402010300 Aluminum, total (as Al) 128
TX0005941 CLEAN HARBORS DEER PARK LLC LA PORTE, TX 4953 120401040706 Zinc, total (as Zn) 103
AR0000531 REYNOLDS METALS COMPANY - GUM SPRINGS PLANT ARKADELPHIA, AR 4953 080401020502 Fluoride, total (as F) 80.3
TX0005941 CLEAN HARBORS DEER PARK LLC LA PORTE, TX 4953 120401040706 Nickel, total (as Ni) 78.8
TX0005941 CLEAN HARBORS DEER PARK LLC LA PORTE, TX 4953 120401040706 Chromium, hexavalent (as Cr) 65.6

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