NPDES permit MD0023337 · Minor NON-POTW · effective, expires 2028-07-31 · EPA's file as of 2026-09-19
Check this month's numbers before you fileLast period with anything received: 2026-07-31.
Reports are due about 28 days after each monitoring period ends (read off this permit's own late-day counts in EPA's filings).
| Outfall | Parameter | Statistic | Limit | Months |
|---|---|---|---|---|
| 001 | Temperature, water deg. fahrenheit | MO AVG | report only | all year |
| 001 | Temperature, water deg. fahrenheit | DAILY MX | report only | all year |
| 001 | Temperature, water deg. fahrenheit | VALUE | report only | all year |
| 001 | Temperature, water deg. fahrenheit | VALUE | report only | all year |
| 001 | Oxygen, dissolved [DO] | MINIMUM | >= 6 mg/L | all year |
| 001 | Oxygen, dissolved [DO] | INST MIN | >= 6 mg/L | Jun, Jul, Aug, Sep |
| 001 | BOD, 5-day, 20 deg. C | MX MO AV | <= 30 mg/L | Jan, Feb, Mar, Apr, May, Oct, Nov, Dec |
| 001 | BOD, 5-day, 20 deg. C | MX MO AV | <= 18 mg/L | Jun, Jul, Aug, Sep |
| 001 | BOD, 5-day, 20 deg. C | MX WK AV | <= 45 mg/L | Jan, Feb, Mar, Apr, May, Oct, Nov, Dec |
| 001 | BOD, 5-day, 20 deg. C | MX WK AV | <= 27 mg/L | Jun, Jul, Aug, Sep |
| 001 | BOD, 5-day, 20 deg. C | MX MO AV | <= 14 lb/d | Jan, Feb, Mar, Apr, May, Oct, Nov, Dec |
| 001 | BOD, 5-day, 20 deg. C | MX MO AV | <= 8.1 lb/d | Jun, Jul, Aug, Sep |
| 001 | BOD, 5-day, 20 deg. C | MX WK AV | <= 20 lb/d | Jan, Feb, Mar, Apr, May, Oct, Nov, Dec |
| 001 | BOD, 5-day, 20 deg. C | MX WK AV | <= 12 lb/d | Jun, Jul, Aug, Sep |
| 001 | pH | MINIMUM | >= 6.5 SU | all year |
| 001 | pH | MAXIMUM | <= 7.5 SU | all year |
| 001 | Solids, total suspended | MX MO AV | <= 30 mg/L | all year |
| 001 | Solids, total suspended | MX WK AV | <= 45 mg/L | all year |
| 001 | Solids, total suspended | MX MO AV | <= 14 lb/d | all year |
| 001 | Solids, total suspended | MX WK AV | <= 20 lb/d | all year |
| 001 | Nitrogen, ammonia total [as N] | MX MO AV | <= 2.5 mg/L | May, Jun, Jul, Aug, Sep, Oct |
| 001 | Nitrogen, ammonia total [as N] | MX MO AV | <= 4.2 mg/L | Jan, Feb, Mar, Apr, Nov, Dec |
| 001 | Nitrogen, ammonia total [as N] | MX MO AV | <= 1.1 lb/d | May, Jun, Jul, Aug, Sep, Oct |
| 001 | Nitrogen, ammonia total [as N] | MX MO AV | <= 1.9 lb/d | Jan, Feb, Mar, Apr, Nov, Dec |
| 001 | Flow, in conduit or thru treatment plant | MO AVG | report only | all year |
| 001 | Flow, in conduit or thru treatment plant | DAILY MX | report only | all year |
| 001 | E. coli | GX | <= 126 MPN/100mL | all year |
| 001 | Number of Events | MO AVG | report only | all year |
| 001 | Flow, total | MO TOTAL | report only | all year |
| 001 | BOD, 5-day, percent removal | MINIMUM | >= 85 % | all year |
| 001 | Solids, suspended percent removal | MINIMUM | >= 85 % | all year |
| 002 | BOD, 5-day, 20 deg. C | MO AVG | <= 70 mg/L | all year |
| 002 | pH | MINIMUM | >= 6.5 SU | all year |
| 002 | pH | MAXIMUM | <= 8.5 SU | all year |
| 002 | Solids, total suspended | MO AVG | <= 90 mg/L | all year |
| 002 | Nitrogen, total [as N] | MO AVG | report only | all year |
| 002 | Nitrate nitrogen, dry weight | MO AVG | report only | all year |
| 002 | Nitrogen, Kjeldahl, total [as N] | MO AVG | report only | all year |
| 002 | Nitrite + Nitrate total [as N] | MO AVG | report only | all year |
| 002 | Fecal coliform | MAXIMUM | <= 200 MPN/4g | all year |
| 002 | Flow, in conduit or thru treatment plant | DAILY AV | <= .0003 MGD | all year |
| 002 | Number of Events | MO AVG | report only | all year |
| 002 | Flow, total | MO TOTAL | report only | all year |
| 101 | BOD, 5-day, 20 deg. C | MO AVG | report only | all year |
| 101 | Solids, total suspended | MO AVG | report only | all year |
| 101 | Flow, in conduit or thru treatment plant | MO TOTAL | report only | all year |
| GMW | Sulfate [as S] | MO AVG | <= 250 mg/L | all year |
| GMW | Sulfate [as S] | MO AVG | <= 250 mg/L | all year |
| GMW | Sulfate [as S] | MO AVG | <= 250 mg/L | all year |
| GMW | Sulfate [as S] | MO AVG | <= 250 mg/L | all year |
| GMW | Sulfate [as S] | MO AVG | <= 250 mg/L | all year |
| GMW | Sulfate [as S] | QRTR AVG | report only | all year |
| GMW | Sulfate [as S] | MO AVG | report only | all year |
| GMW | Sulfate [as S] | MO AVG | report only | all year |
| GMW | Sulfate [as S] | MO AVG | report only | all year |
| GMW | Sulfate [as S] | MO AVG | report only | all year |
| GMW | pH | MINIMUM | >= 6.5 SU | all year |
| GMW | pH | MINIMUM | >= 6.5 SU | all year |
| GMW | pH | MINIMUM | >= 6.5 SU | all year |
| GMW | pH | MINIMUM | >= 6.5 SU | all year |
| GMW | pH | MINIMUM | >= 6.5 SU | all year |
| GMW | pH | MO AVG | report only | all year |
| GMW | pH | MO AVG | report only | all year |
| GMW | pH | MO AVG | report only | all year |
| GMW | pH | MO AVG | report only | all year |
| GMW | pH | MO AVG | report only | all year |
| GMW | pH | MAXIMUM | <= 8.5 SU | all year |
| GMW | pH | MAXIMUM | <= 8.5 SU | all year |
| GMW | pH | MAXIMUM | <= 8.5 SU | all year |
| GMW | pH | MAXIMUM | <= 8.5 SU | all year |
| GMW | pH | MAXIMUM | <= 8.5 SU | all year |
| GMW | Nitrite + Nitrate total [as N] | MO AVG | <= 10 mg/L | all year |
| GMW | Nitrite + Nitrate total [as N] | MO AVG | <= 10 mg/L | all year |
| GMW | Nitrite + Nitrate total [as N] | MO AVG | <= 10 mg/L | all year |
| GMW | Nitrite + Nitrate total [as N] | MO AVG | <= 10 mg/L | all year |
| GMW | Nitrite + Nitrate total [as N] | MO AVG | <= 10 mg/L | all year |
| GMW | Nitrite + Nitrate total [as N] | MO AVG | report only | all year |
| GMW | Nitrite + Nitrate total [as N] | MO AVG | report only | all year |
| GMW | Nitrite + Nitrate total [as N] | MO AVG | report only | all year |
| GMW | Nitrite + Nitrate total [as N] | MO AVG | report only | all year |
| GMW | Nitrite + Nitrate total [as N] | MO AVG | report only | all year |
| GMW | Chloride [as Cl] | MO AVG | <= 250 mg/L | all year |
| GMW | Chloride [as Cl] | MO AVG | <= 250 mg/L | all year |
| GMW | Chloride [as Cl] | MO AVG | <= 250 mg/L | all year |
| GMW | Chloride [as Cl] | MO AVG | <= 250 mg/L | all year |
| GMW | Chloride [as Cl] | MO AVG | <= 250 mg/L | all year |
| GMW | Chloride [as Cl] | MO AVG | report only | all year |
| GMW | Chloride [as Cl] | MO AVG | report only | all year |
| GMW | Chloride [as Cl] | MO AVG | report only | all year |
| GMW | Fecal coliform | MO AVG | report only | all year |
| GMW | Fecal coliform | MO AVG | report only | all year |
| GMW | Fecal coliform | MAXIMUM | <= 2.2 MPN/4g | all year |
| GMW | Fecal coliform | MAXIMUM | <= 2.2 MPN/4g | all year |
| GMW | Fecal coliform | MAXIMUM | <= 2.2 MPN/g | all year |
| GMW | Fecal coliform | DAILY MX | <= 2.2 MPN/4g | all year |
| GMW | Fecal coliform | DAILY MX | <= 2.2 MPN/4g | all year |
| GMW | Fecal coliform | DAILY MX | <= 2.2 MPN/g | all year |
| GMW | Fecal coliform | DAILY MX | <= 2.2 MPN/g | all year |
| GMW | Fecal coliform | DAILY MX | <= 2.2 MPN/g | all year |
| GMW | Solids, total dissolved | MO AVG | <= 500 mg/L | all year |
| GMW | Solids, total dissolved | MO AVG | <= 500 mg/L | all year |
| GMW | Solids, total dissolved | MO AVG | <= 500 mg/L | all year |
| GMW | Solids, total dissolved | MO AVG | <= 500 mg/L | all year |
| GMW | Solids, total dissolved | MO AVG | <= 500 mg/L | all year |
| GMW | Solids, total dissolved | MO AVG | report only | all year |
| GMW | Solids, total dissolved | MO AVG | report only | all year |
| GMW | Solids, total dissolved | MO AVG | report only | all year |
| GMW | Solids, total dissolved | MO AVG | report only | all year |
| GMW | Solids, total dissolved | MO AVG | report only | all year |
| GMW | Nitrogen, nitrate total [as NO3] | QRTR AVG | <= 10 mg/L | all year |
| GMW | Nitrogen, nitrate total [as NO3] | QRTR AVG | <= 10 mg/L | all year |
| GMW | Nitrogen, nitrate total [as NO3] | MO AVG | <= 10 mg/L | all year |
| GMW | Nitrogen, nitrate total [as NO3] | MO AVG | <= 10 mg/L | all year |
| GMW | Nitrogen, nitrate total [as NO3] | MO AVG | <= 10 mg/L | all year |
| GMW | Nitrogen, nitrate total [as NO3] | MO AVG | report only | all year |
| GMW | Nitrogen, nitrate total [as NO3] | MO AVG | report only | all year |
| GMW | Nitrogen, nitrate total [as NO3] | MO AVG | report only | all year |
| GMW | Nitrogen, nitrate total [as NO3] | MO AVG | report only | all year |
| GMW | Nitrogen, nitrate total [as NO3] | MO AVG | report only | all year |
| GMW | Nitrogen, nitrite total [as NO2] | QRTR AVG | <= 1 mg/L | all year |
| GMW | Nitrogen, nitrite total [as NO2] | QRTR AVG | <= 1 mg/L | all year |
| GMW | Nitrogen, nitrite total [as NO2] | MO AVG | <= 1 mg/L | all year |
| GMW | Nitrogen, nitrite total [as NO2] | MO AVG | <= 1 mg/L | all year |
| GMW | Nitrogen, nitrite total [as NO2] | MO AVG | <= 1 mg/L | all year |
| GMW | Nitrogen, nitrite total [as NO2] | MO AVG | report only | all year |
| GMW | Nitrogen, nitrite total [as NO2] | MO AVG | report only | all year |
| GMW | Nitrogen, nitrite total [as NO2] | MO AVG | report only | all year |
| GMW | Nitrogen, nitrite total [as NO2] | MO AVG | report only | all year |
| GMW | Nitrogen, nitrite total [as NO2] | MO AVG | report only | all year |
Built from EPA's ECHO bulk files. EPA's file, not the permit document, is the source: read your permit. Check a report before you file it · All states