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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 - Sugar processing (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
Methylmercury 367,616 98.5 98.5
Potassium, total (as K) 2,070 0.55 99.06
Copper, total recoverable 561 0.15 99.2
Arsenic, total recoverable 431 0.11 99.3
Nitrogen, ammonia total (as N) 414 0.11 99.4
Sulfide, total (as S) 355 0.095 99.5
Magnesium, total (as Mg) 333 0.089 99.6
Arsenic, total (as As) 275 0.073 99.6
Chlorine, total residual 149 0.04005 99.7
Mercury, total recoverable 147 0.039 99.7

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Top Receiving Watersheds (2011)
HUC-12 Code HUC Name Total DMR TWPE (lb-eq/yr)
070200041201 County Ditch No 45 1,441
040802060204 Saginaw River 167
100800140501 Peterson Creek-Shoshone River 29.2
040900010114 Mills Creek-Black River 27.7
101000042704 City of Sidney-Yellowstone River 22.4
040801030401 Gettel Drain-Frontal Lake Huron 16.7
040802050208 Scott Drain-White Creek 15.1
100700041006 Yellowstone River-Billings 0.00026

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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)
CA0005240 C&H SUGAR CO INC CROCKETT, CA 2062 Methylmercury 367,616
ND0024279 AMERICAN CRYSTAL SUGAR - HILLSBORO HILLSBORO, ND 2063 090201090604 Potassium 1,055
CA0005240 C&H SUGAR CO INC CROCKETT, CA 2062 Copper 538
CA0005240 C&H SUGAR CO INC CROCKETT, CA 2062 Arsenic 417
CA0005240 C&H SUGAR CO INC CROCKETT, CA 2062 Sulfide 355
ND0024368 MINN DAK FARMERS COOPERATIVE WAHPETON, ND 2063 090201040401 Arsenic 275
MI0001091 MICHIGAN SUGAR CO BAY CITY, MI 2063 040802060204 Ammonia as N 167
CA0005240 C&H SUGAR CO INC CROCKETT, CA 2062 Lead 129

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