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Discharge Monitoring Report (DMR) Pollutant Loading Tool

Note: The tool uses discharge monitoring report (DMR) data from ICIS-NPDES to calculate pollutant discharge amounts. EPA has verified the accuracy of the tool’s calculations. EPA has also performed a limited review of the underlying data that has focused on facilities with the largest amounts of pollutant discharges. Due to the large amount of DMR data, some errors exist in ICIS-NPDES DMR data. Please see the User Guides page for instructions on how to use the tool and how to correct errors in ICIS-NPDES. The tool also uses wastewater pollutant discharge data from the Toxics Release Inventory (TRI). Contact Us with any comments or questions about the tool, and sign up for our e-mail news bulletin to be notified when new data, enhancements, or training materials become available.

Facility Information (DMR)


For detailed information on the contents of this report, see DMR Facility Information Data Dictionary.


NPDES ID: MD0020958
FRS ID: 110028107082
Other NPDES IDs associated with this FRS ID: MD0062464
   Click a NPDES ID to view that facility’s detail page.
TRI ID(s): None
CWNS ID: 24000049001
Facility Type: POTW
Permit Type: NPDES Individual Permit
Permit Effective Date: 09/01/2010
Permit Expiration Date: 08/31/2015
Major/Minor Indicator: Minor
Permit Issuance: STATE OF MARYLAND
Approved Pretreatment Program: No
Combined Sewer Overflow (CSO) Outfall: No


Congressional District: Maryland's 6th District
Latitude: 39.308435
Longitude: -77.624713
Facility Design Flow (MGD): 0.7
Actual Average Facility Flow (MGD): 41.5
4-Digit SIC Code: 4952 - SEWERAGE SYSTEMS
6-Digit NAICS Code:
Likely Point Source Category:
View ECHO detailed facility report View ECHO Detailed Facility Report
View ECHO effluent chart(s) View ECHO Effluent Chart(s)
View Permit limits and monitoring requirements View Permit Limits and Monitoring Requirements
Click to view multi-year loading report View Multi-Year Loading Report

Outliers flag — Indicates value contains loads that are calculated using data that has been flagged as potential outliers or data errors.
Load over limit flag — Indicates there was one or more exceedances of permit effluent limits for this pollutant sometime during the year. You can hover over the yellow flag to see the load over limit value.

View Facility Loading Calculations for this facility and reporting year. Examining these calculations will show you how the Loading Tool calculates
annual pollutant discharges. These calculations can also help identify errors in the underlying discharge monitoring data.

Top Pollutants by Pounds
(DMR, 2010)
Pollutant Name Total Pounds
Max Allowable
Load (lbs/yr)
Nitrogen 299,229  Value contains loads calculated using data that has been flagged as potential outliers or data errors
Phosphorus 7,479  Value contains loads calculated using data that has been flagged as potential outliers or data errors
Inorganic Nitrogen 2,897
BOD, 5-day, 20 deg. C 2,215 127,750
Solids, total suspended 1,247 127,750
Organic Nitrogen 817
Ammonia as N 112
Total Residual Chlorine 0  Value contains loads calculated using data that has been flagged as potential outliers or data errors 12,492

Download All Data

Top Pollutants by Toxic-Weighted Pounds (TWPE)
(DMR, 2010)
Pollutant Name Total TWPE
Max Allowable
Load (lbs‑eq/yr)
Ammonia as N 0.12
Total Residual Chlorine 0 6,246

Download All Data

NPDES Program Information

NPDES permit was issued by STATE OF MARYLAND. Click the appropriate link below for more information on the state or regional program.

View State Program Information
View EPA Regional Program Information

Receiving Water Information

Waterbody Name (from GNIS): POTOMAC RIVER
Waterbody Number (REACH Code): 02070008001059
Watershed Name and Number (12-Digit HUC): Piney Run-Potomac River (020700080202)
Listed for Impairment? No
Impairment Class: Not provided
Cause(s) of Impairment: None
Discharges to a county or watershed with ESA-listed aquatic species? No

Wastewater Treatment Technology Information

The following information comes from EPA's 2008 CWNS.
Additional information on this POTW can be accessed by following the link(s) below.
CWNS Factsheet(s): 24000049001
Current Treatment in Place: Info Not Available
Advanced treatment methods reported as currently in place at POTW:
checked box BOD Removal
unchecked box Synthetic Organic Removal      
unchecked box Metal Removal
unchecked box Nutrient Removal
checked box Nitrogen Removal
checked box Phosphorus Removal
unchecked box Ammonia Removal

Residents Served: 3,457
Non-Residents Served: Not available

Industrial Discharger Information

No industrial discharge data was found for TRI facilities associated with this POTW.

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