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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 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 - 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) (2011)
Pollutant Name Total DMR TWPE (lb-eq/yr) % of Category TWPE Cumulative % of
Category TWPE
Cadmium 160 22.9 22.9
Silver 129 18.4 41.3
Selenium 128 18.3 59.6
Lead 118 16.8 76.5
Iron 82.8 11.8 88.4
Manganese 33.004 4.72 93.1
Aluminum 28.8 4.13 97.2
Total Residual Chlorine 9.66 1.38 98.6
Sulfate 4.11 0.58 99.2
Fluoride 1.69 0.24 99.5

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Top Receiving Watersheds (2011)
HUC-12 Code HUC Name Total DMR TWPE (lb-eq/yr)
101900040102 Headwaters Clear Creek 317
050901030403 White Oak Creek-Tygarts Creek 176
110200021202 City of Fearnowville-Arkansas River 78.5
101900030408 Lower Big Dry Creek 38.7
071401010403 Schoenberger Creek-Mississippi River 30.4
101900030602 City of Fort Lupton-South Platte River 17.3
101900030704 Lower Running Creek 17.04
101900060607 Outlet Big Thompson River 5.92
101900030405 Todd Creek-South Platte River 5.12
050301010501 Cold Run 4.74

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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)
COG603144 EISENHOWER/JOHNSON MEMORIAL TUNNELS SILVERTHORNE, CO 1629 101900040102 Cadmium 160
COG603144 EISENHOWER/JOHNSON MEMORIAL TUNNELS SILVERTHORNE, CO 1629 101900040102 Silver 129
KY0106305 AA HWY PARK DEVELOPMENT - BLACKBIRD HOLL BEECHY, KY 1629 050901030403 Lead 103
KY0106305 AA HWY PARK DEVELOPMENT - BLACKBIRD HOLL BEECHY, KY 1629 050901030403 Iron 62.9
COG603092 PRAIRIE WATERS - NORTH CAMPUS UNK, CO 1629 101900030408 Selenium 38.7
COG603148 JAMES R DILORIO WATER RECLAMATION FACILITY PUEBLO, CO 1629 110200021202 Selenium 37.6
COG073480 JAMES R DILORIO WATER RECLAMATION FACILITY PUEBLO, CO 1629 110200021202 Selenium 36.7
MO0126357 MO PETROLUM PROD/LIONMARK OVERLAND, MO 1629 071401010403 Aluminum 28.8
COG500496 HEIT PIT WELD COUNTY, CO 1629 101900030602 Iron 17.3
COG603144 EISENHOWER/JOHNSON MEMORIAL TUNNELS SILVERTHORNE, CO 1629 101900040102 Lead 15.2

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