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Discharge Monitoring Report (DMR) Pollutant Loading Tool

The Loading Tool is being transitioned into ECHO to increase user access to data and streamline site maintenance. The beta version is now available for testing. EPA plans to retire this site in late November 2017. Current site functionality will be available in ECHO.

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 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.

Point Source Category Information - Airport deicing (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) (2017)
Pollutant Name Total DMR TWPE (lb-eq/yr) % of Category TWPE Cumulative % of
Category TWPE
Aluminum 4,130 66.5 66.5
Copper 840 13.5 80.1
Potassium 745 12.008 92.1
Zinc 154 2.47 94.5
Iron 88.4 1.42 96.01
Nitrogen, nitrate dissolved 59.2 0.95 96.9
Propylene glycol 38.6 0.62 97.5
Ammonia as N 33.3 0.53 98.1
Total Residual Chlorine 26.4 0.42 98.5
Ethylene glycol 23.3 0.37 98.9

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Top Receiving Watersheds (2017)
HUC-12 Code HUC Name Total DMR TWPE (lb-eq/yr)
050902030806 Upper Gunpowder Creek 484
010900040902 Upper Narragansett Bay 361
051202011309 East Fork White Lick Creek 142
102901060204 Headwaters Clear Creek 82.8
041100010203 Rocky River 33.2
020600031102 Deep Run-Patapsco River 23.8
110100030102 Turkey Creek 16.7
051302020102 Mill Creek Lower 16.6
103001030407 Shaver Creek 6.44
050600011505 Mason Run-Big Walnut Cr. 5.62

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Top Facility Discharges in Toxic-Weighted Pounds (TWPE) (2017)
NPDES ID Facility Name City, State SIC Code HUC-12 Code Top Pollutant Top Pollutant TWPE (lb-eq/yr)
TX0025101 DALLAS/FT. WORTH INT'L AIRPORT DALLAS, TX 4581 120301031006 Aluminum 4,023
TX0025101 DALLAS/FT. WORTH INT'L AIRPORT DALLAS, TX 4581 120301031006 Copper 814
KY0082864 CINCINNATI/N KY INTL AIRPORT HEBRON, KY 4581 050902030806 Potassium 483
TX0025101 DALLAS/FT. WORTH INT'L AIRPORT DALLAS, TX 4581 120301031006 Zinc 154
IN0058238 INDIANAPOLIS INTERNATIONA'L AIRPORT INDIANAPOLIS, IN 4581 051202011309 Potassium 139
RI0021598 T F GREEN AIRPORT WARWICK, RI 4581 010900040902 Potassium 122
RI0021598 T F GREEN AIRPORT WARWICK, RI 4581 010900040902 Aluminum 106
RI0021598 T F GREEN AIRPORT WARWICK, RI 4581 010900040902 Iron 88.4
MO0134830 SPRINGFIELD-BRANSON NATIO SPRINGFIELD, MO 4581 102901060204 Nitrogen, nitrate dissolved 47.8
OH0122068 CLEVELAND HOPKINS INTERNATIONAL AIRPORT CLEVELAND, OH 4581 041100010203 Propylene glycol 28.4

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