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 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 - Waste combustors (TRI)

EPA 304M Annual Review icon — Indicates load was altered by EPA’s 304M Annual Review. You can hover over the green flag to see the original load from the TRI data.

Top Chemicals - Toxic-Weighted Pounds (TWPE) (2011)
Chemical Name Direct TRI TWPE (lb-eq/yr) Indirect TRI TWPE (lb-eq/yr) Total TRI TWPE (lb-eq/yr) % of Category TWPE Cumulative % of
Category TWPE
LEAD AND LEAD COMPOUNDS 40.006 0 40.006 45.3 45.3
SILVER AND SILVER COMPOUNDS 29.1 0 29.1 33.04 78.3
MERCURY AND MERCURY COMPOUNDS 15.2 0 15.2 17.2 95.6
COPPER AND COPPER COMPOUNDS 2.52 0 2.52 2.85 98.5
NICKEL AND NICKEL COMPOUNDS 0.7 0 0.7 0.79 99.2
ZINC AND ZINC COMPOUNDS 0.48 0 0.48 0.55 99.8
CHROMIUM AND CHROMIUM COMPOUNDS 0.12 0 0.12 0.14 99.9
MANGANESE AND MANGANESE COMPOUNDS 0.0077 0 0.0077 0.0087 99.9
BARIUM AND BARIUM COMPOUNDS 0.00081 0 0.00081 0.00092 99.9
ANTIMONY AND ANTIMONY COMPOUNDS 0.0005 0 0.0005 0.00056 99.9

Download All Data

Top Receiving Watersheds (2011)
HUC-12 Code HUC Name Direct TRI TWPE (lb-eq/yr) Indirect TRI TWPE (lb-eq/yr) Total TRI TWPE (lb-eq/yr)
050301010405 Elk Run-Middle Fork Little Beaver Creek 76.1 0.000101 76.1

Download All Data

Top Facility Discharges in Toxic-Weighted Pounds (TWPE) (2011)
TRI Facility ID Facility Name City, State NAICS Code HUC-12 Code Top Chemical Top Chemcical Direct TRI TWPE (lb-eq/yr) Top Chemcical Indirect TRI TWPE (lb-eq/yr) Top Chemcical Total TRI TWPE (lb-eq/yr)
43920VNRLL1250S HERITAGE-WTI INC EAST LIVERPOOL, OH 562213 050301010405 LEAD AND LEAD COMPOUNDS 40.006 0 40.006
43920VNRLL1250S HERITAGE-WTI INC EAST LIVERPOOL, OH 562213 050301010405 SILVER AND SILVER COMPOUNDS 29.1 0 29.1
54603NRTHR200SB FRENCH ISLAND PLANT LA CROSSE, WI 562213 MERCURY AND MERCURY COMPOUNDS 11.7 0 11.7
43920VNRLL1250S HERITAGE-WTI INC EAST LIVERPOOL, OH 562213 050301010405 MERCURY AND MERCURY COMPOUNDS 3.51 0 3.51
43920VNRLL1250S HERITAGE-WTI INC EAST LIVERPOOL, OH 562213 050301010405 COPPER AND COPPER COMPOUNDS 2.52 0 2.52
43920VNRLL1250S HERITAGE-WTI INC EAST LIVERPOOL, OH 562213 050301010405 NICKEL AND NICKEL COMPOUNDS 0.7 0 0.7
54603NRTHR200SB FRENCH ISLAND PLANT LA CROSSE, WI 562213 ZINC AND ZINC COMPOUNDS 0.32 0 0.32
43920VNRLL1250S HERITAGE-WTI INC EAST LIVERPOOL, OH 562213 050301010405 ZINC AND ZINC COMPOUNDS 0.16 0 0.16
43920VNRLL1250S HERITAGE-WTI INC EAST LIVERPOOL, OH 562213 050301010405 CHROMIUM AND CHROMIUM COMPOUNDS 0.12 0 0.12
43920VNRLL1250S HERITAGE-WTI INC EAST LIVERPOOL, OH 562213 050301010405 MANGANESE AND MANGANESE COMPOUNDS 0.0077 0 0.0077

Download All Data

Top of Page

About the Data Glossary Error Correction Contact Us

Jump to main content.