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Electric And Other Services Combined, major discharger, Brandon Shores, Maryland. NPDES permit MD0001503 expired Jul 31, 2025; its limits still apply. Last 12 months: over a limit 3 times (last March 2026). Source: EPA ECHO, Oct 22, 2026.
| Period ending | Parameter | Reported | Limit |
|---|---|---|---|
| January 2026 | Nitrogen, total [as N], annual maximum | 479 lb/yr | ≤ 0 lb/yr |
| February 2026 | Nitrogen, total [as N], annual maximum | 1493.7 lb/yr | ≤ 0 lb/yr |
| March 2026 | Nitrogen, total [as N], annual maximum | 2544 lb/yr | ≤ 0 lb/yr |
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| Temperature, water deg. fahrenheit | daily maximum | report only (deg F) | all year | 001 |
| Temperature, water deg. fahrenheit | daily maximum | report only (deg F) | all year | 001 |
| Thermal Discharge | monthly average | report only (MBTU/d) | all year | 001 |
| Thermal Discharge | daily maximum | ≤ 94400 MBTU/d | all year | 001 |
| Oxygen demand, dissolved | monthly average | report only (mg/L) | all year | 001 |
| Oxidants, total residual | maximum monthly average | ≤ .0075 mg/L | all year | 001 |
| Oxidants, total residual | daily maximum | ≤ .013 mg/L | all year | 001 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 001 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 001 |
| Temperature, water deg. fahrenheit | daily maximum | report only (deg F) | all year | 002 |
| Temperature, water deg. fahrenheit | daily maximum | report only (deg F) | all year | 002 |
| Thermal Discharge | monthly average | report only (MBTU/d) | all year | 002 |
| Thermal Discharge | daily maximum | report only (MBTU/d) | all year | 002 |
| Oxygen demand, dissolved | monthly average | report only (mg/L) | all year | 002 |
| Oxidants, total residual | maximum monthly average | ≤ .0075 mg/L | all year | 002 |
| Oxidants, total residual | daily maximum | ≤ .013 mg/L | all year | 002 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 002 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 002 |
| Oil & Grease | daily maximum | ≤ 15 mg/L | all year | 003 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 003 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 003 |
| Oil & Grease | daily maximum | ≤ 15 mg/L | all year | 004 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 004 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 004 |
| Oil & Grease | daily maximum | ≤ 15 mg/L | all year | 005 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 005 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 005 |
| Oil & Grease | daily maximum | ≤ 15 mg/L | all year | 006 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 006 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 006 |
| pH | minimum | ≥ 6 SU | all year | 401 |
| pH | maximum | ≤ 9 SU | all year | 401 |
| Solids, total suspended | monthly average | ≤ 30 mg/L | all year | 401 |
| Solids, total suspended | daily maximum | ≤ 50 mg/L | all year | 401 |
| Oil & Grease | monthly average | ≤ 15 mg/L | all year | 401 |
| Oil & Grease | daily maximum | ≤ 20 mg/L | all year | 401 |
| Copper, total [as Cu] | daily maximum | ≤ 1 mg/L | all year | 401 |
| Iron, total [as Fe] | daily maximum | ≤ 1 mg/L | all year | 401 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 401 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 401 |
| pH | minimum | ≥ 6 SU | all year | 601 |
| pH | maximum | ≤ 9 SU | all year | 601 |
| Solids, total suspended | monthly average | ≤ 30 mg/L | all year | 601 |
| Solids, total suspended | daily maximum | ≤ 50 mg/L | all year | 601 |
| Oil & Grease | monthly average | ≤ 15 mg/L | all year | 601 |
| Oil & Grease | daily maximum | ≤ 20 mg/L | all year | 601 |
| Copper, total [as Cu] | monthly average | ≤ 1 mg/L | all year | 601 |
| Copper, total [as Cu] | daily maximum | ≤ 1 mg/L | all year | 601 |
| Iron, total [as Fe] | monthly average | ≤ 1 mg/L | all year | 601 |
| Iron, total [as Fe] | daily maximum | ≤ 1 mg/L | all year | 601 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 601 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 601 |
| pH | minimum | ≥ 6 SU | all year | 801 |
| pH | daily maximum | ≤ 9 SU | all year | 801 |
| Solids, total suspended | monthly average | ≤ 30 mg/L | all year | 801 |
| Solids, total suspended | daily maximum | ≤ 100 mg/L | all year | 801 |
| Oil & Grease | maximum monthly average | ≤ 15 mg/L | Mar, Jun, Sep, Dec | 801 |
| Oil & Grease | daily maximum | ≤ 20 mg/L | Mar, Jun, Sep, Dec | 801 |
| Nitrogen, total [as N] | monthly average | report only (mg/L) | all year | 801 |
| Nitrogen, total [as N] | monthly average | report only (mg/L) | all year | 801 |
| Nitrogen, total [as N] | daily maximum | report only (mg/L) | all year | 801 |
| Nitrogen, total [as N] | daily maximum | report only (mg/L) | all year | 801 |
| Nitrogen, total [as N] | annual maximum | ≤ 0 lb/yr | all year | 801 |
| Nitrogen, total [as N] | monthly load | report only (lb/mo) | all year | 801 |
| Nitrogen, total [as N] | monthly load | report only (lb/mo) | all year | 801 |
| Nitrogen, total [as N] | monthly load | report only (lb/mo) | all year | 801 |
| Nitrogen, organic total [as N] | monthly average | report only (mg/L) | all year | 801 |
| Nitrogen, organic total [as N] | monthly average | report only (mg/L) | all year | 801 |
| Nitrogen, organic total [as N] | daily maximum | report only (mg/L) | all year | 801 |
| Nitrogen, organic total [as N] | daily maximum | report only (mg/L) | all year | 801 |
| Nitrogen, ammonia total [as N] | monthly average | report only (mg/L) | all year | 801 |
| Nitrogen, ammonia total [as N] | monthly average | report only (mg/L) | all year | 801 |
| Nitrogen, ammonia total [as N] | daily maximum | report only (mg/L) | all year | 801 |
| Nitrogen, ammonia total [as N] | daily maximum | report only (mg/L) | all year | 801 |
| Nitrite + Nitrate total [as N] | monthly average minimum | report only (mg/L) | all year | 801 |
| Nitrite + Nitrate total [as N] | monthly average | report only (mg/L) | all year | 801 |
| Nitrite + Nitrate total [as N] | daily maximum | report only (mg/L) | all year | 801 |
| Nitrite + Nitrate total [as N] | daily maximum | report only (mg/L) | all year | 801 |
| Phosphorus, total [as P] | monthly average | report only (mg/L) | all year | 801 |
| Phosphorus, total [as P] | daily maximum | report only (mg/L) | all year | 801 |
| Phosphorus, total [as P] | annual maximum | ≤ 0 lb/yr | all year | 801 |
| Phosphorus, total [as P] | monthly load | report only (lb/mo) | all year | 801 |
| Phosphorus, total [as P] | monthly load | report only (lb/mo) | all year | 801 |
| Phosphorus, total [as P] | monthly average | report only (mg/L) | all year | 801 |
| Phosphorus, total [as P] | daily maximum | report only (mg/L) | all year | 801 |
| Phosphorus, total [as P] | monthly load | report only (lb/mo) | all year | 801 |
| Arsenic, total [as As] | monthly average | report only (ug/L) | all year | 801 |
| Arsenic, total [as As] | daily maximum | report only (ug/L) | all year | 801 |
| Selenium, total [as Se] | monthly average | report only (ug/L) | all year | 801 |
| Selenium, total [as Se] | daily maximum | report only (ug/L) | all year | 801 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 801 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 801 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 801 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 801 |
| Mercury, total [as Hg] | monthly average | report only (ug/L) | all year | 801 |
| Mercury, total [as Hg] | daily maximum | report only (ug/L) | all year | 801 |
Cited limits by parameter: Maryland's rules and the federal ones.
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Your permit document is the final word. As JSON: /api/v1/permits/MD0001503 · MCP: https://passage-data.com/mcp