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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 - Concentrated aquatic animal production (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
Copper 43,498 95.3 95.3
Formaldehyde 690 1.51 96.8
Ammonia as N 289 0.63 97.5
Arsenic 287 0.62 98.1
Fluoride 222 0.48 98.6
Manganese 156 0.34 98.9
Chloride 142 0.31 99.2
Nitrogen, nitrate dissolved 102 0.22 99.5
Aluminum 72.6 0.15 99.6
Total Residual Chlorine 63.9 0.14 99.8

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Top Receiving Watersheds (2017)
HUC-12 Code HUC Name Total DMR TWPE (lb-eq/yr)
170402121104 Billingsley Creek 43,371
180201110301 Upper Steelhead Creek 478
041401020704 Orwell Creek-Salmon River 245
050200040303 Taylor Run-Shavers Fork 101
110100100207 Gut Creek-Spring River 59.3
041402020803 Scriba Creek 58.7
071300030602 Spring Lake 47.4
170402121006 Briggs Creek-Snake River 27.2
020402030402 Headwaters Tulpehocken Creek 23.3
080702030401 Wall Bayou-Tickfaw River 20.7

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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)
IDG130082 ST JOHNS UNITED CHURCH - TREATMENT PLANT HAGERMAN, ID 0921 170402121104 Copper 43,371
NY0035335 ADIRONDACK FISH CULTURE STA SARANAC LAKE, NY 0921 041504060102 Formaldehyde 304
CA0085197 STERLING CAVIAR, ELVERTA ELVERTA, CA 0921 180201110301 Arsenic 287
NY0109053 SALMON RIVER FISH HATCHERY ALTMAR, NY 0921 041401020704 Formaldehyde 241
CA0102792 BLACK ROCK FISH HATCHERY INDEPENDENCE, CA 0921 180901030102 Fluoride 222
CA0085197 STERLING CAVIAR, ELVERTA ELVERTA, CA 0921 180201110301 Manganese 155
TX0112691 BOWERS SHRIMP FARM MATAGORDA COUNTY, TX 0273 Copper 83.005
NY0216348 ONEIDA FISH HATCHERY CONSTANTIA, NY 0921 041402020803 Formaldehyde 58.7
WV0115584 BOWDEN FISH HATCHERY ELKINS, WV 0273 050200040303 Aluminum 53.06
NY0035343 CHATEAUGAY STATE FISH HATCHERY CHATEAUGAY, NY 0921 041503080201 Formaldehyde 52.6

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