Jump to main content or area navigation.

Contact Us

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 - Construction and development (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
Iron 116 25.7 25.7
Lead 80.3 17.9 43.7
Cadmium 78.8 17.5 61.3
Total Residual Chlorine 47.1 10.5 71.8
Selenium 34.2 7.62 79.4
Copper 18.6 4.16 83.6
Zinc 18.5 4.13 87.7
Mercury 16.7 3.73 91.4
Chloride 15.4 3.45 94.9
Manganese 7.27 1.62 96.5

Download All Data

Top Receiving Watersheds (2017)
HUC-12 Code HUC Name Total DMR TWPE (lb-eq/yr)
071401020601 Upper Indian Creek 176
050200020402 Outlet Simpson Creek 111
101900030304 Cherry Creek-South Platte River 36.02
101900040102 Headwaters Clear Creek 30.3
050901030403 White Oak Creek-Tygarts Creek 25.9
051002050902 Town Branch 7.0078
051401010901 South Fork Beargrass Creek 5.87
101900030202 Coal Creek 2.103
101900030605 Ashcroft Draw-South Platte River 2.056
101900030301 Happy Canyon Creek-Cherry Creek 1.48

Download All Data

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)
WV0117200 CHARLES POINTE SOUTH BRIDGEPORT, WV 1629 050200020402 Iron 111
MO0136654 EPA INDIAN CREEK MINE TAILINGS SITE POTOSI, MO 1629 071401020601 Cadmium 78.8
MO0136654 EPA INDIAN CREEK MINE TAILINGS SITE POTOSI, MO 1629 071401020601 Lead 62.4
CO0049002 GLOBVILLE LANDING OUTFALL PROJECT DENVER, CO 1794 101900030304 Total Residual Chlorine 30.2
NV0024210 LAS VEGAS WASH CHANNEL IMPROVEMENT PROJECT LAS VEGAS, NV 1771 160600150403 Selenium 25.8
MO0136654 EPA INDIAN CREEK MINE TAILINGS SITE POTOSI, MO 1629 071401020601 Zinc 17.4
CO0026069 EISENHOWER TUNNEL WWTF SILVERTHORNE, CO 1622 101900040102 Mercury 16.7
MO0136654 EPA INDIAN CREEK MINE TAILINGS SITE POTOSI, MO 1629 071401020601 Copper 16.6
KY0106305 AA HWY PARK DEVELOPMENT - BLACKBIRD HOLL BEECHY, KY 1629 050901030403 Lead 15.9
MS0031038 HANCOCK NORTH CENTRAL ELEMENTARY SCHOOL KILN, MS 1542 031700091301 Total Residual Chlorine 14.5

Download All Data

Top of Page

About the Data Glossary Error Correction Contact Us

Jump to main content.