PEPCO Environment Management Services

NPDES permit DC0000094 · Major NON-POTW · expired, expires 2026-05-31 · EPA's file as of 2026-09-19

Check this month's numbers before you file
Watch this permit — $79 a month. Every Monday, from EPA's newest files: the next report due and when, whether EPA's file holds your last one, any change to this permit's limits or status, and the renewal date.

This permit expired on 2026-05-31 and is expired: its last limits keep applying until a new permit is issued, and EPA still expects the reports.

EPA's record, 2025-09-01 to 2026-08-31

2values over a limit
12required values missing, on 3 form(s)
2of 69 forms filed late

Last period with anything received: 2026-06-30. Most often over: PCB-1260 (1), Iron, total [as Fe] (1).

Reporting

Reports are due about 28 days after each monitoring period ends (read off this permit's own late-day counts in EPA's filings).

Limits in force (116)

OutfallParameterStatisticLimitMonths
005Solids, total suspendedDAILY MX report only all year
005Nitrogen, total [as N]DAILY MX report only all year
005Phosphorus, total [as P]DAILY MX report only all year
005Cadmium, total [as Cd]DAILY MX report only all year
005Copper, total [as Cu]DAILY MX report only all year
005Iron, total [as Fe]DAILY MX report only all year
005Lead, total [as Pb]DAILY MX report only all year
005Nickel, total [as Ni]DAILY MX report only all year
005Zinc, total [as Zn]DAILY MX report only all year
005PCB-1242DAILY MX report only all year
005PCB-1254DAILY MX report only all year
005PCB-1260DAILY MX report only all year
006Solids, total suspendedDAILY MX report only all year
006Nitrogen, total [as N]DAILY MX report only all year
006Phosphorus, total [as P]DAILY MX report only all year
006Cadmium, total [as Cd]DAILY MX report only all year
006Copper, total [as Cu]DAILY MX report only all year
006Iron, total [as Fe]DAILY MX report only all year
006Lead, total [as Pb]DAILY MX report only all year
006Nickel, total [as Ni]DAILY MX report only all year
006Zinc, total [as Zn]DAILY MX report only all year
006PCB-1242DAILY MX report only all year
006PCB-1254DAILY MX report only all year
006PCB-1260DAILY MX report only all year
013pHMAXIMUM <= 8.5 SU all year
013pHMINIMUM >= 6 SU all year
013Solids, total suspendedDAILY MX <= 100 mg/L all year
013Oil & GreaseDAILY MX <= 10 mg/L all year
013Nitrogen, total [as N]DAILY MX report only all year
013Phosphorus, total [as P]DAILY MX report only all year
013Arsenic, total [as As]DAILY MX <= 340 ug/L all year
013Cadmium, total [as Cd]DAILY MX <= 2.85 ug/L (alert) all year
013Cadmium, total [as Cd]DAILY MX <= 4 ug/L (alert) all year
013Copper, total [as Cu]DAILY MX <= 17.1 ug/L all year
013Copper, total [as Cu]DAILY MX <= 21 ug/L all year
013Iron, total [as Fe]DAILY MX <= 1591 ug/L all year
013Iron, total [as Fe]DAILY MX <= 2200 ug/L all year
013Lead, total [as Pb]DAILY MX <= 102.8 ug/L (alert) all year
013Lead, total [as Pb]DAILY MX <= 142 ug/L all year
013Nickel, total [as Ni]DAILY MX <= 745.2 ug/L (alert) all year
013Nickel, total [as Ni]DAILY MX <= 1030 ug/L (alert) all year
013Zinc, total [as Zn]DAILY MX <= 177.2 ug/L all year
013Zinc, total [as Zn]DAILY MX <= 239 ug/L all year
013Polynuclear Aromatic Hydrocarbons [PAHs]DAILY MX <= .031 ug/L (alert) all year
013Polynuclear Aromatic Hydrocarbons [PAHs]DAILY MX <= 400 ug/L (alert) all year
013Polynuclear Aromatic Hydrocarbons [PAHs]DAILY MX report only (alert) all year
013Polynuclear Aromatic Hydrocarbons [PAHs]DAILY MX report only (alert) all year
013Benzo[b]fluorantheneDAILY MX <= .031 ug/L (alert) all year
013Benzo[k]fluorantheneDAILY MX <= .031 ug/L (alert) all year
013Benzo[a]pyreneDAILY MX <= .031 ug/L (alert) all year
013ChryseneDAILY MX <= 400 ug/L (alert) all year
013FluorantheneDAILY MX <= 400 ug/L (alert) all year
013Indeno[1,2,3-cd]pyreneDAILY MX <= .031 ug/L (alert) all year
013PyreneDAILY MX <= 400 ug/L (alert) all year
013Benzo[a]anthraceneDAILY MX <= 400 ug/L (alert) all year
013Dibenzo[a,h]anthracene, dry weightDAILY MX <= .031 ug/L (alert) all year
0134,4'-DDTDAILY MX <= 1.1 ug/L (alert) all year
0134,4'-DDTDAILY MX <= 1.1 ug/L all year
013DieldrinDAILY MX <= .24 ug/L (alert) all year
013DieldrinDAILY MX <= .24 ug/L all year
013Heptachlor epoxideDAILY MX <= .52 ug/L (alert) all year
013Heptachlor epoxideDAILY MX <= .52 ug/L all year
013PCB-1242DAILY MX <= 1 ug/L all year
013PCB-1254DAILY MX <= 1 ug/L all year
013PCB-1260DAILY MX <= 1 ug/L all year
013ChlordaneDAILY MX <= 2.4 ug/L (alert) all year
013ChlordaneDAILY MX <= 2.4 ug/L all year
013FlowTOTAL report only all year
014Solids, total suspendedDAILY MX report only all year
014Nitrogen, total [as N]DAILY MX report only all year
014Phosphorus, total [as P]DAILY MX report only all year
014Cadmium, total [as Cd]DAILY MX report only all year
014Copper, total [as Cu]DAILY MX report only all year
014Iron, total [as Fe]DAILY MX report only all year
014Lead, total [as Pb]DAILY MX report only all year
014Nickel, total [as Ni]DAILY MX report only all year
014Zinc, total [as Zn]DAILY MX report only all year
014PCB-1242DAILY MX report only all year
014PCB-1254DAILY MX report only all year
014PCB-1260DAILY MX report only all year
015Solids, total suspendedDAILY MX report only all year
015Nitrogen, total [as N]DAILY MX report only all year
015Phosphorus, total [as P]DAILY MX report only all year
015Cadmium, total [as Cd]DAILY MX report only all year
015Copper, total [as Cu]DAILY MX report only all year
015Iron, total [as Fe]DAILY MX report only all year
015Lead, total [as Pb]DAILY MX report only all year
015Nickel, total [as Ni]DAILY MX report only all year
015Zinc, total [as Zn]DAILY MX report only all year
015PCB-1242DAILY MX report only all year
015PCB-1254DAILY MX report only all year
015PCB-1260DAILY MX report only all year
016Solids, total suspendedDAILY MX report only all year
016Nitrogen, total [as N]DAILY MX report only all year
016Phosphorus, total [as P]DAILY MX report only all year
016Cadmium, total [as Cd]DAILY MX report only all year
016Copper, total [as Cu]DAILY MX report only all year
016Iron, total [as Fe]DAILY MX report only all year
016Lead, total [as Pb]DAILY MX report only all year
016Nickel, total [as Ni]DAILY MX report only all year
016Zinc, total [as Zn]DAILY MX report only all year
016PCB-1242DAILY MX report only all year
016PCB-1254DAILY MX report only all year
016PCB-1260DAILY MX report only all year
401Solids, total suspendedDAILY MX report only all year
401Nitrogen, total [as N]DAILY MX report only all year
401Phosphorus, total [as P]DAILY MX report only all year
401Cadmium, total [as Cd]DAILY MX report only all year
401Copper, total [as Cu]DAILY MX report only all year
401Iron, total [as Fe]DAILY MX report only all year
401Lead, total [as Pb]DAILY MX report only all year
401Nickel, total [as Ni]DAILY MX report only all year
401Zinc, total [as Zn]DAILY MX report only all year
401PCB-1242DAILY MX report only all year
401PCB-1254DAILY MX report only all year
401PCB-1260DAILY MX 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