MONONGAHELA POWER COMPANY

NPDES permit WV0075281 · Minor NON-POTW · expired 2026-02-28 · EPA's file as of 2026-09-26

Keep this permit as a site — opens New site at EPA's facility point (39.4869, -79.6086); you set the radius.

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.

These are the last limits EPA's file holds for this permit, from an earlier version of it (version 0 in EPA's file): its current version carries none yet. Read your permit: a renewal can change them.

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

6values over a limit
0required values missing, on 0 form(s)
0of 15 forms filed late

Last period with anything received: 2025-11-30. Most often over: Arsenic, total recoverable (3), Cadmium, total recoverable (2), Solids, total suspended (1).

Reporting

Reports are due about 25 days after each monitoring period ends (the most common figure among WV permits in EPA's filings — check your permit).

How strict are these limits?

Each concentration limit against the same limit in comparable permits. Where it appears more than once, its strictest value.

3 other limits: fewer than 20 comparable permits.

Limits in force (131)

OutfallParameterStatisticLimitMonths
003Oxygen, dissolved [DO]daily minimum >= 5 mg/L all year
003pHinstantaneous minimum >= 6 SU all year
003pHinstantaneous maximum <= 9 SU all year
003Solids, total suspendedmonthly average <= 35 mg/L all year
003Solids, total suspendeddaily maximum <= 70 mg/L all year
003Hardness, total [as CaCO3]monthly average report only all year
003Hardness, total [as CaCO3]daily maximum report only all year
003Arsenic, total recoverablemonthly average <= .01 mg/L all year
003Arsenic, total recoverabledaily maximum <= .016 mg/L all year
003Iron, total recoverablemonthly average report only all year
003Iron, total recoverabledaily maximum report only all year
003Beryllium, total recoverable [as Be]monthly average report only all year
003Beryllium, total recoverable [as Be]daily maximum report only all year
003Boron, total [as B]monthly average report only all year
003Boron, total [as B]daily maximum report only all year
003Chromium, hexavalent [as Cr]monthly average report only all year
003Chromium, hexavalent [as Cr]daily maximum report only all year
003Nickel, total recoverablemonthly average report only all year
003Nickel, total recoverabledaily maximum report only all year
003Zinc, total recoverablemonthly average report only all year
003Zinc, total recoverabledaily maximum report only all year
003Aluminum, total recoverablemonthly average report only all year
003Aluminum, total recoverabledaily maximum report only all year
003Cadmium, total recoverablemonthly average <= .0002 mg/L all year
003Cadmium, total recoverabledaily maximum <= .0005 mg/L all year
003Lead, total recoverablemonthly average <= .0025 mg/L all year
003Lead, total recoverabledaily maximum <= .0068 mg/L all year
003Copper, total recoverablemonthly average <= .0092 mg/L all year
003Copper, total recoverabledaily maximum <= .0145 mg/L all year
003Selenium, total [as Se]monthly average report only all year
003Selenium, total [as Se]daily maximum report only all year
003Manganese, total recoverablemonthly average report only all year
003Manganese, total recoverabledaily maximum report only all year
003Flow, in conduit or thru treatment plantmonthly average report only all year
003Flow, in conduit or thru treatment plantdaily maximum report only all year
003Toxicity [chronic], Ceriodaphnia dubiamonthly average report only all year
003Toxicity [chronic], Ceriodaphnia dubiadaily maximum report only all year
003Toxicity [chronic], Pimephales promelas [Fathead Minnow]monthly average report only all year
003Toxicity [chronic], Pimephales promelas [Fathead Minnow]daily maximum report only all year
003Solids, total dissolvedmonthly average report only all year
003Solids, total dissolveddaily maximum report only all year
003Sulfatemonthly average report only all year
003Sulfatedaily maximum report only all year
004Oxygen, dissolved [DO]daily minimum >= 5 mg/L all year
004pHinstantaneous minimum >= 6 SU all year
004pHinstantaneous maximum <= 9 SU all year
004Solids, total suspendedmonthly average <= 35 mg/L all year
004Solids, total suspendeddaily maximum <= 70 mg/L all year
004Cyanide, total [as CN]monthly average report only all year
004Cyanide, total [as CN]daily maximum report only all year
004Hardness, total [as CaCO3]monthly average report only all year
004Hardness, total [as CaCO3]daily maximum report only all year
004Arsenic, total recoverablemonthly average report only all year
004Arsenic, total recoverabledaily maximum report only all year
004Iron, total recoverablemonthly average report only all year
004Iron, total recoverabledaily maximum report only all year
004Beryllium, total recoverable [as Be]monthly average report only all year
004Beryllium, total recoverable [as Be]daily maximum report only all year
004Boron, total [as B]monthly average report only all year
004Boron, total [as B]daily maximum report only all year
004Chromium, hexavalent [as Cr]monthly average report only all year
004Chromium, hexavalent [as Cr]daily maximum report only all year
004Nickel, total recoverablemonthly average report only all year
004Nickel, total recoverabledaily maximum report only all year
004Zinc, total recoverablemonthly average report only all year
004Zinc, total recoverabledaily maximum report only all year
004Aluminum, total recoverablemonthly average <= .18 mg/L all year
004Aluminum, total recoverabledaily maximum <= .47 mg/L all year
004Cadmium, total recoverablemonthly average report only all year
004Cadmium, total recoverabledaily maximum report only all year
004Lead, total recoverablemonthly average report only all year
004Lead, total recoverabledaily maximum report only all year
004Copper, total recoverablemonthly average report only all year
004Copper, total recoverabledaily maximum report only all year
004Selenium, total [as Se]monthly average report only all year
004Selenium, total [as Se]daily maximum report only all year
004Manganese, total recoverablemonthly average report only all year
004Manganese, total recoverabledaily maximum report only all year
004Flow, in conduit or thru treatment plantmonthly average report only all year
004Flow, in conduit or thru treatment plantdaily maximum report only all year
004Toxicity [chronic], Ceriodaphnia dubiamonthly average report only all year
004Toxicity [chronic], Ceriodaphnia dubiadaily maximum report only all year
004Toxicity [chronic], Pimephales promelas [Fathead Minnow]monthly average report only all year
004Toxicity [chronic], Pimephales promelas [Fathead Minnow]daily maximum report only all year
004Solids, total dissolvedmonthly average report only all year
004Solids, total dissolveddaily maximum report only all year
004Sulfatemonthly average report only all year
004Sulfatedaily maximum report only all year
005Oxygen, dissolved [DO]daily minimum >= 5 mg/L all year
005pHinstantaneous minimum >= 6 SU all year
005pHinstantaneous maximum <= 9 SU all year
005Solids, total suspendedmonthly average <= 35 mg/L all year
005Solids, total suspendeddaily maximum <= 70 mg/L all year
005Hardness, total [as CaCO3]monthly average report only all year
005Hardness, total [as CaCO3]daily maximum report only all year
005Arsenic, total recoverablemonthly average <= .01 mg/L all year
005Arsenic, total recoverabledaily maximum <= .0235 mg/L all year
005Iron, total recoverablemonthly average report only all year
005Iron, total recoverabledaily maximum report only all year
005Beryllium, total recoverable [as Be]monthly average report only all year
005Beryllium, total recoverable [as Be]daily maximum report only all year
005Boron, total [as B]monthly average report only all year
005Boron, total [as B]daily maximum report only all year
005Chromium, hexavalent [as Cr]monthly average report only all year
005Chromium, hexavalent [as Cr]daily maximum report only all year
005Nickel, total recoverablemonthly average report only all year
005Nickel, total recoverabledaily maximum report only all year
005Zinc, total recoverablemonthly average report only all year
005Zinc, total recoverabledaily maximum report only all year
005Aluminum, total recoverablemonthly average report only all year
005Aluminum, total recoverabledaily maximum report only all year
005Cadmium, total recoverablemonthly average report only all year
005Cadmium, total recoverabledaily maximum report only all year
005Lead, total recoverablemonthly average report only all year
005Lead, total recoverabledaily maximum report only all year
005Copper, total recoverablemonthly average <= .0058 mg/L all year
005Copper, total recoverabledaily maximum <= .0086 mg/L all year
005Selenium, total [as Se]monthly average report only all year
005Selenium, total [as Se]daily maximum report only all year
005Manganese, total recoverablemonthly average report only all year
005Manganese, total recoverabledaily maximum report only all year
005Flow, in conduit or thru treatment plantmonthly average report only all year
005Flow, in conduit or thru treatment plantdaily maximum report only all year
005Toxicity [chronic], Ceriodaphnia dubiamonthly average report only all year
005Toxicity [chronic], Ceriodaphnia dubiadaily maximum report only all year
005Toxicity [chronic], Pimephales promelas [Fathead Minnow]monthly average report only all year
005Toxicity [chronic], Pimephales promelas [Fathead Minnow]daily maximum report only all year
005Solids, total dissolvedmonthly average report only all year
005Solids, total dissolveddaily maximum report only all year
005Sulfatemonthly average report only all year
005Sulfatedaily maximum 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