Passage Data · Check a report · Use it from your AI
Sewage treatment plant, major discharger, Damascus, Maryland. NPDES permit MD0020982, in force until Dec 31, 2028. Last 12 months: no values over a limit, 11 of 37 reports late. Source: EPA ECHO, Oct 22, 2026.
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| Oxygen, dissolved [DO] | instantaneous minimum | ≥ 5 mg/L | all year | 001 |
| BOD, 5-day, 20 deg. C | maximum monthly average | ≤ 15 mg/L | May–Oct | 001 |
| BOD, 5-day, 20 deg. C | maximum monthly average | ≤ 30 mg/L | Jan, Feb, Mar, Apr, Nov, Dec | 001 |
| BOD, 5-day, 20 deg. C | maximum weekly average | ≤ 23 mg/L | May–Oct | 001 |
| BOD, 5-day, 20 deg. C | maximum weekly average | ≤ 45 mg/L | Jan, Feb, Mar, Apr, Nov, Dec | 001 |
| BOD, 5-day, 20 deg. C | maximum monthly average | ≤ 188 lb/d | May–Oct | 001 |
| BOD, 5-day, 20 deg. C | maximum monthly average | ≤ 376 lb/d | Jan, Feb, Mar, Apr, Nov, Dec | 001 |
| BOD, 5-day, 20 deg. C | maximum weekly average | ≤ 282 lb/d | May–Oct | 001 |
| BOD, 5-day, 20 deg. C | maximum weekly average | ≤ 563 lb/d | Jan, Feb, Mar, Apr, Nov, Dec | 001 |
| pH | minimum | ≥ 6.5 SU | all year | 001 |
| pH | maximum | ≤ 8.5 SU | all year | 001 |
| Solids, total suspended | maximum monthly average | ≤ 30 mg/L | all year | 001 |
| Solids, total suspended | maximum weekly average | ≤ 45 mg/L | all year | 001 |
| Solids, total suspended | maximum monthly average | ≤ 376 lb/d | all year | 001 |
| Solids, total suspended | maximum weekly average | ≤ 563 lb/d | all year | 001 |
| Solids, total suspended | cumulative total | ≤ 136800 lb/yr | all year | 001 |
| Solids, total suspended | monthly total | report only (lb/mo) | all year | 001 |
| Nitrogen, total [as N] | monthly average | report only (mg/L) | all year | 001 |
| Nitrogen, total [as N] | cumulative total | ≤ 18273 lb/yr | all year | 001 |
| Nitrogen, total [as N] | monthly total | report only (lb/mo) | all year | 001 |
| Nitrogen, total [as N] | annual total | report only (lb/yr) | all year | 001 |
| Nitrogen, organic total [as N] | monthly average | report only (mg/L) | all year | 001 |
| Nitrogen, ammonia total [as N] | maximum monthly average | ≤ 2.1 mg/L | May–Oct | 001 |
| Nitrogen, ammonia total [as N] | maximum monthly average | ≤ 4.2 mg/L | Jan, Feb, Mar, Apr, Nov, Dec | 001 |
| Nitrogen, ammonia total [as N] | maximum monthly average | ≤ 1.4 mg/L | May–Oct | 001 |
| Nitrogen, ammonia total [as N] | maximum monthly average | ≤ 2.8 mg/L | Jan, Feb, Mar, Apr, Nov, Dec | 001 |
| Nitrogen, ammonia total [as N] | maximum monthly average | ≤ 26 lb/d | May–Oct | 001 |
| Nitrogen, ammonia total [as N] | maximum monthly average | ≤ 52 lb/d | Jan, Feb, Mar, Apr, Nov, Dec | 001 |
| Nitrogen, ammonia total [as N] | maximum monthly average | ≤ 18 lb/d | May–Oct | 001 |
| Nitrogen, ammonia total [as N] | maximum monthly average | ≤ 35 lb/d | Jan, Feb, Mar, Apr, Nov, Dec | 001 |
| Nitrogen, Kjeldahl, total [as N] | maximum monthly average | ≤ 6 mg/L | May–Oct | 001 |
| Nitrogen, Kjeldahl, total [as N] | maximum weekly average | ≤ 9 mg/L | May–Oct | 001 |
| Nitrogen, Kjeldahl, total [as N] | maximum monthly average | ≤ 75 lb/d | May–Oct | 001 |
| Nitrogen, Kjeldahl, total [as N] | maximum weekly average | ≤ 113 lb/d | May–Oct | 001 |
| Nitrite + Nitrate total [as N] | monthly average | report only (mg/L) | all year | 001 |
| Phosphorus, total [as P] | monthly average | report only (mg/L) | all year | 001 |
| Phosphorus, total [as P] | cumulative total | ≤ 1371 lb/yr | all year | 001 |
| Phosphorus, total [as P] | monthly total | report only (lb/mo) | all year | 001 |
| Phosphorus, total [as P] | annual total | report only (lb/yr) | all year | 001 |
| Hardness, total [as CaCO3] | monthly average | report only (mg/L) | all year | 001 |
| Hardness, total [as CaCO3] | monthly average | report only (mg/L) | all year | 001 |
| Copper, total recoverable | monthly average | report only (ug/L) | all year | 001 |
| Arsenic | quarterly average | report only (ug/L) | Mar, Jun, Sep, Dec | 001 |
| Phosphate, ortho [as P] | monthly average | report only (mg/L) | all year | 001 |
| Acrylonitrile | quarterly average | report only (ug/L) | Mar, Jun, Sep, Dec | 001 |
| Bis[2-chloroethyl] ether | quarterly average | report only (ug/L) | Mar, Jun, Sep, Dec | 001 |
| Chrysene | quarterly average | report only (ug/L) | Mar, Jun, Sep, Dec | 001 |
| N-Nitrosodi-N-propylamine | quarterly average | report only (ug/L) | Mar, Jun, Sep, Dec | 001 |
| N-Nitrosodimethylamine [NDMA] | quarterly average | report only (ug/L) | Mar, Jun, Sep, Dec | 001 |
| Benzo[a]anthracene | quarterly average | report only (ug/L) | Mar, Jun, Sep, Dec | 001 |
| Dibenz[a,h]anthracene | quarterly average | report only (ug/L) | Mar, Jun, Sep, Dec | 001 |
| 3,3'-Dichlorobenzidine | quarterly average | report only (ug/L) | Mar, Jun, Sep, Dec | 001 |
| Benzidine | quarterly average | report only (mg/L) | Mar, Jun, Sep, Dec | 001 |
| 4,4'-DDT | quarterly average | report only (ug/L) | Mar, Jun, Sep, Dec | 001 |
| 4,4'-DDD | quarterly average | report only (ug/L) | Mar, Jun, Sep, Dec | 001 |
| 4,4'-DDE | quarterly average | report only (ug/L) | Mar, Jun, Sep, Dec | 001 |
| Aldrin | quarterly average | report only (ug/L) | Mar, Jun, Sep, Dec | 001 |
| Toxaphene | quarterly average | report only (ug/L) | Mar, Jun, Sep, Dec | 001 |
| Heptachlor | quarterly average | report only (ug/L) | Mar, Jun, Sep, Dec | 001 |
| Heptachlor epoxide | quarterly average | report only (ug/L) | Mar, Jun, Sep, Dec | 001 |
| Hexachlorobenzene | quarterly average | report only (ug/L) | Mar, Jun, Sep, Dec | 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 |
| Chlorine, total residual | instantaneous maximum | ≤ .011 mg/L | all year | 001 |
| Chlordane | quarterly average | report only (ug/L) | Mar, Jun, Sep, Dec | 001 |
| E. coli | maximum monthly geometric mean | ≤ 126 MPN/100mL | all year | 001 |
| Polychlorinated biphenyls [PCB] pg/L | quarterly average | report only (ug/L) | Mar, Jun, Sep, Dec | 001 |
| BOD, 5-day, percent removal | monthly average minimum | ≥ 85 % | all year | 001 |
| Solids, suspended percent removal | monthly average minimum | ≥ 85 % | all year | 001 |
| Flow, total | monthly total | report only (Mgal/mo) | all year | 001 |
| Flow, total | annual total | report only (Mgal/yr) | all year | 001 |
| BOD, 5-day, 20 deg. C | monthly average | report only (mg/L) | all year | 101 |
| Solids, total suspended | monthly average | report only (mg/L) | all year | 101 |
| Solids, total suspended | cumulative total | report only (lb/yr) | all year | TRAD |
| Solids, total suspended | cumulative total | report only (lb/yr) | all year | TRAD |
| Nitrogen, total [as N] | cumulative total | report only (lb/yr) | all year | TRAD |
| Nitrogen, total [as N] | cumulative total | report only (lb/yr) | all year | TRAD |
| Phosphorus, total [as P] | cumulative total | report only (lb/yr) | all year | TRAD |
| Phosphorus, total [as P] | cumulative total | report only (lb/yr) | all year | TRAD |
| Flow | year-to-date total | report only (Mgal/yr) | all year | TRAD |
Cited limits by parameter: Maryland's rules and the federal ones.
· Save this facility as a site · Superfund sites nearby · Your permits on one board
On EPA ECHO: Facility report · DMR history
Your permit document is the final word. As JSON: /api/v1/permits/MD0020982 · MCP: https://passage-data.com/mcp