Jump to main content or area navigation.

Contact Us

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).

Point Source Category Information - Grain mills (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
Total Residual Chlorine 1,974 85.4 85.4
Chloride 182 7.902 93.3
Sulfate 71.8 3.11 96.4
Zinc 21.04 0.91 97.4
Copper 17.5 0.76 98.1
Nickel 15.7 0.68 98.8
Manganese 15.3 0.66 99.5
Ammonia as N 9.95 0.43 99.9
Iron 1.22 0.053 99.9
Trichloroethylene 0.00084 3.68E-005 100

Download All Data

Top Receiving Watersheds (2011)
HUC-12 Code HUC Name Total DMR TWPE (lb-eq/yr)
071300030304 Pekin Lake-Illinois River 1,020
071200040705 Maple Lake-Chicago Sanitary and Ship Canal 425
102002010302 Headwaters Lost Creek 250
020501071002 Tenmile Creek-Susquehanna River 249
070200060301 City of Marshall-Redwood River 175
080101000703 Loosahatchie Bar-Mississippi River 122
102702020202 Walnut Creek-Big Blue River 67.3
111102010102 Upper Little Vache Grasse Creek 0.403
020402020401 Pennsauken Creek 0.046

Download All Data

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)
IL0001953 AVENTINE RENEWABLE ENERGY INC PEKIN, IL 2046 071300030304 Total Residual Chlorine 1,020
IL0041009 INGREDION INC ARGO PLANT BEDFORD PARK, IL 2046 071200040705 Total Residual Chlorine 425
PA0009270 DEL MONTE CORP BLOOMSBURG, PA 2047 020501071002 Total Residual Chlorine 246
TN0029068 CARGILL INC MEMPHIS, TN 2046 080101000703 Total Residual Chlorine 122
NE0130141 ARCHER DANIELS MIDLAND COMPANY - COLUMBUS COLUMBUS, NE 2046 102002010302 Total Residual Chlorine 76.1
MN0057037 ADM MARSHALL, MN 5159 070200060301 Sulfate 71.6
MN0057037 ADM MARSHALL, MN 5159 070200060301 Total Residual Chlorine 66.08
NE0000116 NESTLE PURINA PETCARE CO CRETE, NE 2047 102702020202 Zinc 20.9
NE0000116 NESTLE PURINA PETCARE CO CRETE, NE 2047 102702020202 Total Residual Chlorine 17.9

Download All Data

Top of Page

About the Data Glossary Error Correction Contact Us

Jump to main content.