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Sewage treatment plant, Rising Sun, Maryland. NPDES permit MD0020265, in force until Apr 30, 2028. Last 12 months: no values over a limit, 2 of 23 reports late. Source: EPA ECHO, Oct 22, 2026.
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| Nitrogen, total [as N] | annual total | report only (lb/yr) | all year | 001 |
| Nitrogen, total [as N] | annual total | report only (lb/yr) | all year | 001 |
| Phosphorus, total [as P] | annual total | report only (lb/yr) | all year | 001 |
| Phosphorus, total [as P] | annual total | report only (lb/yr) | all year | 001 |
| Flow, total | annual total | report only (Mgal/yr) | all year | 001 |
| Flow, total | annual total | report only (Mgal/yr) | all year | 001 |
| Temperature, water deg. fahrenheit | monthly average | report only (deg F) | all year | 002 |
| Temperature, water deg. fahrenheit | monthly maximum | report only (deg F) | all year | 002 |
| Temperature, water deg. fahrenheit | monthly average | report only (deg F) | all year | 002 |
| Temperature, water deg. fahrenheit | monthly maximum | report only (deg F) | all year | 002 |
| Temperature, water deg. fahrenheit | monthly average | report only (deg F) | all year | 002 |
| Temperature, water deg. fahrenheit | monthly maximum | report only (deg F) | all year | 002 |
| Oxygen, dissolved [DO] | instantaneous minimum | ≥ 5 mg/L | all year | 002 |
| Oxygen, dissolved [DO] | daily average minimum | ≥ 6 mg/L | all year | 002 |
| BOD, 5-day, 20 deg. C | maximum monthly average | ≤ 17 mg/L | all year | 002 |
| BOD, 5-day, 20 deg. C | maximum weekly average | ≤ 25 mg/L | all year | 002 |
| BOD, 5-day, 20 deg. C | maximum monthly average | ≤ 69 lb/d | all year | 002 |
| BOD, 5-day, 20 deg. C | maximum weekly average | ≤ 103 lb/d | all year | 002 |
| pH | minimum | ≥ 6.5 SU | all year | 002 |
| pH | maximum | ≤ 8.5 SU | all year | 002 |
| Alkalinity, total [as CaCO3] | quarterly average | report only (mg/L) | all year | 002 |
| Solids, total suspended | maximum monthly average | ≤ 17 mg/L | all year | 002 |
| Solids, total suspended | maximum weekly average | ≤ 25 mg/L | all year | 002 |
| Solids, total suspended | maximum monthly average | ≤ 69 lb/d | all year | 002 |
| Solids, total suspended | maximum weekly average | ≤ 103 lb/d | all year | 002 |
| Nitrogen, total [as N] | monthly average | report only (mg/L) | all year | 002 |
| Nitrogen, total [as N] | monthly load | report only (lb/mo) | all year | 002 |
| Nitrogen, total [as N] | cumulative total | ≤ 6091 lb/yr | all year | 002 |
| Nitrogen, organic total [as N] | monthly average | report only (mg/L) | all year | 002 |
| Nitrogen, ammonia total [as N] | maximum monthly average | ≤ 1.9 mg/L | May–Oct | 002 |
| Nitrogen, ammonia total [as N] | maximum monthly average | ≤ 6 mg/L | Jan, Feb, Mar, Apr, Nov, Dec | 002 |
| Nitrogen, ammonia total [as N] | maximum daily average | ≤ 7 mg/L | May–Oct | 002 |
| Nitrogen, ammonia total [as N] | maximum daily average | ≤ 11 mg/L | Jan, Feb, Mar, Apr, Nov, Dec | 002 |
| Nitrogen, ammonia total [as N] | maximum monthly average | ≤ 8 lb/d | May–Oct | 002 |
| Nitrogen, ammonia total [as N] | maximum monthly average | ≤ 24 lb/d | Jan, Feb, Mar, Apr, Nov, Dec | 002 |
| Nitrogen, ammonia total [as N] | maximum daily average | ≤ 29 lb/d | May–Oct | 002 |
| Nitrogen, ammonia total [as N] | maximum daily average | ≤ 46 lb/d | Jan, Feb, Mar, Apr, Nov, Dec | 002 |
| Nitrite + Nitrate total [as N] | monthly average | report only (mg/L) | all year | 002 |
| Phosphorus, total [as P] | monthly average | report only (mg/L) | all year | 002 |
| Phosphorus, total [as P] | cumulative total | ≤ 457 lb/yr | all year | 002 |
| Phosphorus, total [as P] | monthly load | report only (lb/mo) | all year | 002 |
| Carbon, dissolved organic [as C] | quarterly average | report only (mg/L) | all year | 002 |
| Aluminum, total [as Al] | quarterly average | report only (mg/L) | all year | 002 |
| Phosphate, ortho [as P] | monthly average | report only (mg/L) | all year | 002 |
| Phosphate, ortho [as P] | monthly average | report only (lb/d) | all year | 002 |
| 4,4'-DDT | quarterly average | report only (mg/L) | all year | 002 |
| Toxaphene | quarterly average | report only (mg/L) | all year | 002 |
| Heptachlor | quarterly average | report only (mg/L) | all year | 002 |
| Heptachlor epoxide | quarterly average | report only (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 |
| E. coli | maximum monthly geometric mean | ≤ 126 MPN/100mL | all year | 002 |
| BOD, 5-day, percent removal | monthly average | report only (%) | all year | 002 |
| Solids, suspended percent removal | monthly average | report only (%) | all year | 002 |
| Flow, total | total | report only (Mgal/mo) | all year | 002 |
| Toxicity, Acute | quarterly average | report only (tox acute) | all year | 002 |
| Toxicity, Chronic | quarterly average | report only (tox chronic) | all year | 002 |
| BOD, 5-day, 20 deg. C | annual average | report only (mg/L) | all year | 101 |
| Solids, total suspended | annual average | report only (mg/L) | all year | 101 |
Cited limits by parameter: Maryland's rules and the federal ones.
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On EPA ECHO: Facility report · DMR history
Your permit document is the final word. As JSON: /api/v1/permits/MD0020265 · MCP: https://passage-data.com/mcp