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Electric Services, major discharger, Washington, the District of Columbia. NPDES permit DC0000094 expired May 31, 2026; its limits still apply. Last 12 months: over a limit 2 times (last June 2026), 8 required values missing, 1 of 30 reports late. Source: EPA ECHO, Oct 22, 2026.
| Period ending | Parameter | Reported | Limit | Over by |
|---|---|---|---|---|
| June 2026 | Iron, total [as Fe], daily maximum | 6600 ug/L | ≤ 2200 ug/L | 200% |
| June 2026 | PCB-1260, daily maximum | 2.7 ug/L | ≤ 1 ug/L | 170% |
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| Solids, total suspended | daily maximum | report only (mg/L) | all year | 005 |
| Nitrogen, total [as N] | daily maximum | report only (mg/L) | all year | 005 |
| Phosphorus, total [as P] | daily maximum | report only (mg/L) | all year | 005 |
| Cadmium, total [as Cd] | daily maximum | report only (ug/L) | all year | 005 |
| Copper, total [as Cu] | daily maximum | report only (ug/L) | all year | 005 |
| Iron, total [as Fe] | daily maximum | report only (ug/L) | all year | 005 |
| Lead, total [as Pb] | daily maximum | report only (ug/L) | all year | 005 |
| Nickel, total [as Ni] | daily maximum | report only (ug/L) | all year | 005 |
| Zinc, total [as Zn] | daily maximum | report only (ug/L) | all year | 005 |
| PCB-1242 | daily maximum | report only (ug/L) | all year | 005 |
| PCB-1254 | daily maximum | report only (ug/L) | all year | 005 |
| PCB-1260 | daily maximum | report only (ug/L) | all year | 005 |
| Solids, total suspended | daily maximum | report only (mg/L) | all year | 006 |
| Nitrogen, total [as N] | daily maximum | report only (mg/L) | all year | 006 |
| Phosphorus, total [as P] | daily maximum | report only (mg/L) | all year | 006 |
| Cadmium, total [as Cd] | daily maximum | report only (ug/L) | all year | 006 |
| Copper, total [as Cu] | daily maximum | report only (ug/L) | all year | 006 |
| Iron, total [as Fe] | daily maximum | report only (ug/L) | all year | 006 |
| Lead, total [as Pb] | daily maximum | report only (ug/L) | all year | 006 |
| Nickel, total [as Ni] | daily maximum | report only (ug/L) | all year | 006 |
| Zinc, total [as Zn] | daily maximum | report only (ug/L) | all year | 006 |
| PCB-1242 | daily maximum | report only (ug/L) | all year | 006 |
| PCB-1254 | daily maximum | report only (ug/L) | all year | 006 |
| PCB-1260 | daily maximum | report only (ug/L) | all year | 006 |
| pH | maximum | ≤ 8.5 SU | all year | 013 |
| pH | minimum | ≥ 6 SU | all year | 013 |
| Solids, total suspended | daily maximum | ≤ 100 mg/L | all year | 013 |
| Oil & Grease | daily maximum | ≤ 10 mg/L | all year | 013 |
| Nitrogen, total [as N] | daily maximum | report only (mg/L) | all year | 013 |
| Phosphorus, total [as P] | daily maximum | report only (mg/L) | all year | 013 |
| Arsenic, total [as As] | daily maximum | ≤ 340 ug/L | all year | 013 |
| Cadmium, total [as Cd] | daily maximum | ≤ 2.85 ug/L (alert, not enforceable) | all year | 013 |
| Cadmium, total [as Cd] | daily maximum | ≤ 4 ug/L (alert, not enforceable) | all year | 013 |
| Copper, total [as Cu] | daily maximum | ≤ 17.1 ug/L | all year | 013 |
| Copper, total [as Cu] | daily maximum | ≤ 21 ug/L | all year | 013 |
| Iron, total [as Fe] | daily maximum | ≤ 1591 ug/L | all year | 013 |
| Iron, total [as Fe] | daily maximum | ≤ 2200 ug/L | all year | 013 |
| Lead, total [as Pb] | daily maximum | ≤ 102.8 ug/L (alert, not enforceable) | all year | 013 |
| Lead, total [as Pb] | daily maximum | ≤ 142 ug/L | all year | 013 |
| Nickel, total [as Ni] | daily maximum | ≤ 745.2 ug/L (alert, not enforceable) | all year | 013 |
| Nickel, total [as Ni] | daily maximum | ≤ 1030 ug/L (alert, not enforceable) | all year | 013 |
| Zinc, total [as Zn] | daily maximum | ≤ 177.2 ug/L | all year | 013 |
| Zinc, total [as Zn] | daily maximum | ≤ 239 ug/L | all year | 013 |
| Polynuclear Aromatic Hydrocarbons [PAHs] | daily maximum | ≤ .031 ug/L (alert, not enforceable) | all year | 013 |
| Polynuclear Aromatic Hydrocarbons [PAHs] | daily maximum | ≤ 400 ug/L (alert, not enforceable) | all year | 013 |
| Polynuclear Aromatic Hydrocarbons [PAHs] | daily maximum | report only (ug/L) (alert, not enforceable) | all year | 013 |
| Polynuclear Aromatic Hydrocarbons [PAHs] | daily maximum | report only (ug/L) (alert, not enforceable) | all year | 013 |
| Benzo[b]fluoranthene | daily maximum | ≤ .031 ug/L (alert, not enforceable) | all year | 013 |
| Benzo[k]fluoranthene | daily maximum | ≤ .031 ug/L (alert, not enforceable) | all year | 013 |
| Benzo[a]pyrene | daily maximum | ≤ .031 ug/L (alert, not enforceable) | all year | 013 |
| Chrysene | daily maximum | ≤ 400 ug/L (alert, not enforceable) | all year | 013 |
| Fluoranthene | daily maximum | ≤ 400 ug/L (alert, not enforceable) | all year | 013 |
| Indeno[1,2,3-cd]pyrene | daily maximum | ≤ .031 ug/L (alert, not enforceable) | all year | 013 |
| Pyrene | daily maximum | ≤ 400 ug/L (alert, not enforceable) | all year | 013 |
| Benzo[a]anthracene | daily maximum | ≤ 400 ug/L (alert, not enforceable) | all year | 013 |
| Dibenzo[a,h]anthracene, dry weight | daily maximum | ≤ .031 ug/L (alert, not enforceable) | all year | 013 |
| 4,4'-DDT | daily maximum | ≤ 1.1 ug/L (alert, not enforceable) | all year | 013 |
| 4,4'-DDT | daily maximum | ≤ 1.1 ug/L | all year | 013 |
| Dieldrin | daily maximum | ≤ .24 ug/L (alert, not enforceable) | all year | 013 |
| Dieldrin | daily maximum | ≤ .24 ug/L | all year | 013 |
| Heptachlor epoxide | daily maximum | ≤ .52 ug/L (alert, not enforceable) | all year | 013 |
| Heptachlor epoxide | daily maximum | ≤ .52 ug/L | all year | 013 |
| PCB-1242 | daily maximum | ≤ 1 ug/L | all year | 013 |
| PCB-1254 | daily maximum | ≤ 1 ug/L | all year | 013 |
| PCB-1260 | daily maximum | ≤ 1 ug/L | all year | 013 |
| Chlordane | daily maximum | ≤ 2.4 ug/L (alert, not enforceable) | all year | 013 |
| Chlordane | daily maximum | ≤ 2.4 ug/L | all year | 013 |
| Flow | total | report only (MGD) | all year | 013 |
| Solids, total suspended | daily maximum | report only (mg/L) | all year | 014 |
| Nitrogen, total [as N] | daily maximum | report only (mg/L) | all year | 014 |
| Phosphorus, total [as P] | daily maximum | report only (mg/L) | all year | 014 |
| Cadmium, total [as Cd] | daily maximum | report only (ug/L) | all year | 014 |
| Copper, total [as Cu] | daily maximum | report only (ug/L) | all year | 014 |
| Iron, total [as Fe] | daily maximum | report only (ug/L) | all year | 014 |
| Lead, total [as Pb] | daily maximum | report only (ug/L) | all year | 014 |
| Nickel, total [as Ni] | daily maximum | report only (ug/L) | all year | 014 |
| Zinc, total [as Zn] | daily maximum | report only (ug/L) | all year | 014 |
| PCB-1242 | daily maximum | report only (ug/L) | all year | 014 |
| PCB-1254 | daily maximum | report only (ug/L) | all year | 014 |
| PCB-1260 | daily maximum | report only (ug/L) | all year | 014 |
| Solids, total suspended | daily maximum | report only (mg/L) | all year | 015 |
| Nitrogen, total [as N] | daily maximum | report only (mg/L) | all year | 015 |
| Phosphorus, total [as P] | daily maximum | report only (mg/L) | all year | 015 |
| Cadmium, total [as Cd] | daily maximum | report only (ug/L) | all year | 015 |
| Copper, total [as Cu] | daily maximum | report only (ug/L) | all year | 015 |
| Iron, total [as Fe] | daily maximum | report only (ug/L) | all year | 015 |
| Lead, total [as Pb] | daily maximum | report only (ug/L) | all year | 015 |
| Nickel, total [as Ni] | daily maximum | report only (ug/L) | all year | 015 |
| Zinc, total [as Zn] | daily maximum | report only (ug/L) | all year | 015 |
| PCB-1242 | daily maximum | report only (ug/L) | all year | 015 |
| PCB-1254 | daily maximum | report only (ug/L) | all year | 015 |
| PCB-1260 | daily maximum | report only (ug/L) | all year | 015 |
| Solids, total suspended | daily maximum | report only (mg/L) | all year | 016 |
| Nitrogen, total [as N] | daily maximum | report only (mg/L) | all year | 016 |
| Phosphorus, total [as P] | daily maximum | report only (mg/L) | all year | 016 |
| Cadmium, total [as Cd] | daily maximum | report only (ug/L) | all year | 016 |
| Copper, total [as Cu] | daily maximum | report only (ug/L) | all year | 016 |
| Iron, total [as Fe] | daily maximum | report only (ug/L) | all year | 016 |
| Lead, total [as Pb] | daily maximum | report only (ug/L) | all year | 016 |
| Nickel, total [as Ni] | daily maximum | report only (ug/L) | all year | 016 |
| Zinc, total [as Zn] | daily maximum | report only (ug/L) | all year | 016 |
| PCB-1242 | daily maximum | report only (ug/L) | all year | 016 |
| PCB-1254 | daily maximum | report only (ug/L) | all year | 016 |
| PCB-1260 | daily maximum | report only (ug/L) | all year | 016 |
| Solids, total suspended | daily maximum | report only (mg/L) | all year | 401 |
| Nitrogen, total [as N] | daily maximum | report only (mg/L) | all year | 401 |
| Phosphorus, total [as P] | daily maximum | report only (mg/L) | all year | 401 |
| Cadmium, total [as Cd] | daily maximum | report only (ug/L) | all year | 401 |
| Copper, total [as Cu] | daily maximum | report only (ug/L) | all year | 401 |
| Iron, total [as Fe] | daily maximum | report only (ug/L) | all year | 401 |
| Lead, total [as Pb] | daily maximum | report only (ug/L) | all year | 401 |
| Nickel, total [as Ni] | daily maximum | report only (ug/L) | all year | 401 |
| Zinc, total [as Zn] | daily maximum | report only (ug/L) | all year | 401 |
| PCB-1242 | daily maximum | report only (ug/L) | all year | 401 |
| PCB-1254 | daily maximum | report only (ug/L) | all year | 401 |
| PCB-1260 | daily maximum | report only (ug/L) | all year | 401 |
Cited limits by parameter: the District of Columbia's rules and the federal ones.
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Your permit document is the final word. As JSON: /api/v1/permits/DC0000094 · MCP: https://passage-data.com/mcp