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Monongahela Power Company

Electric Services, major discharger, Haywood, West Virginia. NPDES permit WV0005339, in force until Apr 24, 2029. Last 12 months: over a limit 2 times (last August 2026), 8 required values missing. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 25 days after each period: outfall 001 form A monthly (18 values), outfall 001 form B quarterly (44 values), outfall 002 form A monthly (18 values), outfall 002 form B quarterly (44 values), outfall 007 form B quarterly (12 values), outfall 010 form B quarterly (8 values), and 10 more forms
Last report on file
August 2026
Oct 2024 – Sep 2025
1 value over a limit, 2 required values missing, 0 of 86 reports late

Last 12 months (Oct 1, 2025 – Sep 30, 2026)

Period endingOutfallParameterReportedLimitOver by
January 2026002Iron, total recoverable, daily maximum2.27 mg/L≤ 2.1 mg/L8%
August 2026001Iron, total recoverable, daily maximum2.49 mg/L≤ 2.1 mg/L19%

Limits in force (299)

ParameterStatisticLimitMonthsOutfall
Temperature, water deg. fahrenheitmonthly averagereport only (deg F)all year001
Temperature, water deg. fahrenheitinstantaneous maximum≤ 110 deg Fall year001
Temperature, water deg. fahrenheitmonthly averagereport only (deg F)all year001
Temperature, water deg. fahrenheitdaily maximumreport only (deg F)all year001
Temp. diff. between samp. & upstrm deg. Fmonthly averagereport only (deg F)all year001
Temp. diff. between samp. & upstrm deg. Finstantaneous maximum≤ 55 deg Fall year001
pHinstantaneous minimum≥ 6 SUall year001
pHinstantaneous maximum≤ 9 SUall year001
Solids, total suspendedmonthly average≤ 27 mg/Lall year001
Solids, total suspendeddaily maximum≤ 77 mg/Lall year001
Solids, total suspendedmonthly averagereport only (lb/d)all year001
Solids, total suspendeddaily maximumreport only (lb/d)all year001
Oil and grease, hexane extr methodmonthly average≤ 8.8 mg/Lall year001
Oil and grease, hexane extr methodmonthly average≤ 8.8 mg/Lall year001
Oil and grease, hexane extr methoddaily maximum≤ 12 mg/Lall year001
Oil and grease, hexane extr methoddaily maximum≤ 12 mg/Lall year001
Oil and grease, hexane extr methodmonthly averagereport only (lb/d)all year001
Oil and grease, hexane extr methodmonthly averagereport only (lb/d)all year001
Oil and grease, hexane extr methoddaily maximumreport only (lb/d)all year001
Oil and grease, hexane extr methoddaily maximumreport only (lb/d)all year001
Arsenic, total recoverablemonthly averagereport only (mg/L)all year001
Arsenic, total recoverablemonthly averagereport only (mg/L)all year001
Arsenic, total recoverabledaily maximumreport only (mg/L)all year001
Arsenic, total recoverabledaily maximumreport only (mg/L)all year001
Iron, total recoverablemonthly average≤ 1.26 mg/Lall year001
Iron, total recoverabledaily maximum≤ 2.1 mg/Lall year001
Selenium, total recoverablemonthly averagereport only (mg/L)all year001
Selenium, total recoverablemonthly averagereport only (mg/L)all year001
Selenium, total recoverabledaily maximumreport only (mg/L)all year001
Selenium, total recoverabledaily maximumreport only (mg/L)all year001
Nickel, total recoverablemonthly averagereport only (mg/L)all year001
Nickel, total recoverablemonthly averagereport only (mg/L)all year001
Nickel, total recoverabledaily maximumreport only (mg/L)all year001
Nickel, total recoverabledaily maximumreport only (mg/L)all year001
Zinc, total recoverablemonthly averagereport only (mg/L)all year001
Zinc, total recoverablemonthly averagereport only (mg/L)all year001
Zinc, total recoverabledaily maximumreport only (mg/L)all year001
Zinc, total recoverabledaily maximumreport only (mg/L)all year001
Aluminum, total recoverablemonthly averagereport only (mg/L)all year001
Aluminum, total recoverablemonthly averagereport only (mg/L)all year001
Aluminum, total recoverabledaily maximumreport only (mg/L)all year001
Aluminum, total recoverabledaily maximumreport only (mg/L)all year001
Lead, total recoverablemonthly averagereport only (mg/L)all year001
Lead, total recoverablemonthly averagereport only (mg/L)all year001
Lead, total recoverabledaily maximumreport only (mg/L)all year001
Lead, total recoverabledaily maximumreport only (mg/L)all year001
Copper, total recoverablemonthly averagereport only (mg/L)all year001
Copper, total recoverablemonthly averagereport only (mg/L)all year001
Copper, total recoverabledaily maximumreport only (mg/L)all year001
Copper, total recoverabledaily maximumreport only (mg/L)all year001
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year001
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year001
Chlorine, total residualmonthly average≤ 18 ug/Lall year001
Chlorine, total residualdaily maximum≤ 36 ug/Lall year001
Mercury, total [as Hg]monthly averagereport only (ug/L)all year001
Mercury, total [as Hg]monthly averagereport only (ug/L)all year001
Mercury, total [as Hg]daily maximumreport only (ug/L)all year001
Mercury, total [as Hg]daily maximumreport only (ug/L)all year001
Sulfatemonthly averagereport only (mg/L)all year001
Sulfatemonthly averagereport only (mg/L)all year001
Sulfatedaily maximumreport only (mg/L)all year001
Sulfatedaily maximumreport only (mg/L)all year001
Temperature, water deg. fahrenheitmonthly averagereport only (deg F)all year002
Temperature, water deg. fahrenheitinstantaneous maximum≤ 110 deg Fall year002
Temperature, water deg. fahrenheitmonthly averagereport only (deg F)all year002
Temperature, water deg. fahrenheitdaily maximumreport only (deg F)all year002
Temp. diff. between samp. & upstrm deg. Fmonthly averagereport only (deg F)all year002
Temp. diff. between samp. & upstrm deg. Finstantaneous maximum≤ 55 deg Fall year002
pHinstantaneous minimum≥ 6 SUall year002
pHinstantaneous maximum≤ 9 SUall year002
Solids, total suspendedmonthly average≤ 27 mg/Lall year002
Solids, total suspendeddaily maximum≤ 77 mg/Lall year002
Solids, total suspendedmonthly averagereport only (lb/d)all year002
Solids, total suspendeddaily maximumreport only (lb/d)all year002
Oil and grease, hexane extr methodmonthly average≤ 8.8 mg/Lall year002
Oil and grease, hexane extr methodmonthly average≤ 8.8 mg/Lall year002
Oil and grease, hexane extr methoddaily maximum≤ 12 mg/Lall year002
Oil and grease, hexane extr methoddaily maximum≤ 12 mg/Lall year002
Oil and grease, hexane extr methodmonthly averagereport only (lb/d)all year002
Oil and grease, hexane extr methodmonthly averagereport only (lb/d)all year002
Oil and grease, hexane extr methoddaily maximumreport only (lb/d)all year002
Oil and grease, hexane extr methoddaily maximumreport only (lb/d)all year002
Arsenic, total recoverablemonthly averagereport only (mg/L)all year002
Arsenic, total recoverablemonthly averagereport only (mg/L)all year002
Arsenic, total recoverabledaily maximumreport only (mg/L)all year002
Arsenic, total recoverabledaily maximumreport only (mg/L)all year002
Iron, total recoverablemonthly average≤ 1.26 mg/Lall year002
Iron, total recoverabledaily maximum≤ 2.1 mg/Lall year002
Selenium, total recoverablemonthly averagereport only (mg/L)all year002
Selenium, total recoverablemonthly averagereport only (mg/L)all year002
Selenium, total recoverabledaily maximumreport only (mg/L)all year002
Selenium, total recoverabledaily maximumreport only (mg/L)all year002
Nickel, total recoverablemonthly averagereport only (mg/L)all year002
Nickel, total recoverablemonthly averagereport only (mg/L)all year002
Nickel, total recoverabledaily maximumreport only (mg/L)all year002
Nickel, total recoverabledaily maximumreport only (mg/L)all year002
Zinc, total recoverablemonthly averagereport only (mg/L)all year002
Zinc, total recoverablemonthly averagereport only (mg/L)all year002
Zinc, total recoverabledaily maximumreport only (mg/L)all year002
Zinc, total recoverabledaily maximumreport only (mg/L)all year002
Aluminum, total recoverablemonthly averagereport only (mg/L)all year002
Aluminum, total recoverablemonthly averagereport only (mg/L)all year002
Aluminum, total recoverabledaily maximumreport only (mg/L)all year002
Aluminum, total recoverabledaily maximumreport only (mg/L)all year002
Lead, total recoverablemonthly averagereport only (mg/L)all year002
Lead, total recoverablemonthly averagereport only (mg/L)all year002
Lead, total recoverabledaily maximumreport only (mg/L)all year002
Lead, total recoverabledaily maximumreport only (mg/L)all year002
Copper, total recoverablemonthly averagereport only (mg/L)all year002
Copper, total recoverablemonthly averagereport only (mg/L)all year002
Copper, total recoverabledaily maximumreport only (mg/L)all year002
Copper, total recoverabledaily maximumreport only (mg/L)all year002
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year002
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year002
Chlorine, total residualmonthly average≤ 18 ug/Lall year002
Chlorine, total residualdaily maximum≤ 36 ug/Lall year002
Mercury, total [as Hg]monthly averagereport only (ug/L)all year002
Mercury, total [as Hg]monthly averagereport only (ug/L)all year002
Mercury, total [as Hg]daily maximumreport only (ug/L)all year002
Mercury, total [as Hg]daily maximumreport only (ug/L)all year002
Sulfatemonthly averagereport only (mg/L)all year002
Sulfatemonthly averagereport only (mg/L)all year002
Sulfatedaily maximumreport only (mg/L)all year002
Sulfatedaily maximumreport only (mg/L)all year002
pHinstantaneous minimumreport only (SU)all year006
pHinstantaneous maximumreport only (SU)all year006
Solids, total suspendedmonthly averagereport only (mg/L)all year006
Solids, total suspendeddaily maximumreport only (mg/L)all year006
Arsenic, total recoverablemonthly averagereport only (mg/L)all year006
Arsenic, total recoverabledaily maximumreport only (mg/L)all year006
Iron, total recoverablemonthly averagereport only (mg/L)all year006
Iron, total recoverabledaily maximumreport only (mg/L)all year006
Selenium, total recoverablemonthly averagereport only (mg/L)all year006
Selenium, total recoverabledaily maximumreport only (mg/L)all year006
Zinc, total recoverablemonthly averagereport only (mg/L)all year006
Zinc, total recoverabledaily maximumreport only (mg/L)all year006
Aluminum, total recoverablemonthly averagereport only (mg/L)all year006
Aluminum, total recoverabledaily maximumreport only (mg/L)all year006
Copper, total recoverablemonthly averagereport only (mg/L)all year006
Copper, total recoverabledaily maximumreport only (mg/L)all year006
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year006
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year006
Chlorine, total residualmonthly averagereport only (mg/L)all year006
Chlorine, total residualdaily maximumreport only (mg/L)all year006
Mercury, total [as Hg]monthly averagereport only (ug/L)all year006
Mercury, total [as Hg]daily maximumreport only (ug/L)all year006
Sulfatemonthly averagereport only (mg/L)all year006
Sulfatedaily maximumreport only (mg/L)all year006
pHinstantaneous minimumreport only (SU)all year007
pHinstantaneous maximumreport only (SU)all year007
Solids, total suspendedmonthly averagereport only (mg/L)all year007
Solids, total suspendeddaily maximumreport only (mg/L)all year007
Arsenic, total recoverablemonthly averagereport only (mg/L)all year007
Arsenic, total recoverabledaily maximumreport only (mg/L)all year007
Iron, total recoverablemonthly averagereport only (mg/L)all year007
Iron, total recoverablemonthly averagereport only (mg/L)all year007
Iron, total recoverabledaily maximum≤ 1.5 mg/Lall year007
Iron, total recoverabledaily maximum≤ 1.5 mg/Lall year007
Selenium, total recoverablemonthly averagereport only (mg/L)all year007
Selenium, total recoverabledaily maximumreport only (mg/L)all year007
Zinc, total recoverablemonthly averagereport only (mg/L)all year007
Zinc, total recoverablemonthly averagereport only (mg/L)all year007
Zinc, total recoverabledaily maximum≤ .69 mg/Lall year007
Zinc, total recoverabledaily maximum≤ .69 mg/Lall year007
Aluminum, total recoverablemonthly averagereport only (mg/L)all year007
Aluminum, total recoverabledaily maximumreport only (mg/L)all year007
Copper, total recoverablemonthly averagereport only (mg/L)all year007
Copper, total recoverabledaily maximumreport only (mg/L)all year007
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year007
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year007
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year007
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year007
Chlorine, total residualmonthly averagereport only (mg/L)all year007
Chlorine, total residualdaily maximumreport only (mg/L)all year007
Mercury, total [as Hg]monthly averagereport only (ug/L)all year007
Mercury, total [as Hg]daily maximumreport only (ug/L)all year007
pHinstantaneous minimumreport only (SU)all year010
pHinstantaneous maximumreport only (SU)all year010
Solids, total suspendedmonthly averagereport only (mg/L)all year010
Solids, total suspendeddaily maximumreport only (mg/L)all year010
Arsenic, total recoverablemonthly averagereport only (mg/L)all year010
Arsenic, total recoverabledaily maximumreport only (mg/L)all year010
Iron, total recoverablemonthly averagereport only (mg/L)all year010
Iron, total recoverablemonthly averagereport only (mg/L)all year010
Iron, total recoverabledaily maximum≤ 1.5 mg/Lall year010
Iron, total recoverabledaily maximum≤ 1.5 mg/Lall year010
Selenium, total recoverablemonthly averagereport only (mg/L)all year010
Selenium, total recoverabledaily maximumreport only (mg/L)all year010
Zinc, total recoverablemonthly averagereport only (mg/L)all year010
Zinc, total recoverabledaily maximumreport only (mg/L)all year010
Aluminum, total recoverablemonthly averagereport only (mg/L)all year010
Aluminum, total recoverabledaily maximumreport only (mg/L)all year010
Copper, total recoverablemonthly averagereport only (mg/L)all year010
Copper, total recoverabledaily maximumreport only (mg/L)all year010
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year010
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year010
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year010
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year010
Chlorine, total residualmonthly averagereport only (mg/L)all year010
Chlorine, total residualdaily maximumreport only (mg/L)all year010
Mercury, total [as Hg]monthly averagereport only (ug/L)all year010
Mercury, total [as Hg]daily maximumreport only (ug/L)all year010
pHinstantaneous minimumreport only (SU)all year012
pHinstantaneous maximumreport only (SU)all year012
Solids, total suspendedmonthly averagereport only (mg/L)all year012
Solids, total suspendeddaily maximumreport only (mg/L)all year012
Arsenic, total recoverablemonthly averagereport only (mg/L)all year012
Arsenic, total recoverabledaily maximumreport only (mg/L)all year012
Iron, total recoverablemonthly averagereport only (mg/L)all year012
Iron, total recoverabledaily maximumreport only (mg/L)all year012
Selenium, total recoverablemonthly averagereport only (mg/L)all year012
Selenium, total recoverabledaily maximumreport only (mg/L)all year012
Zinc, total recoverablemonthly averagereport only (mg/L)all year012
Zinc, total recoverabledaily maximumreport only (mg/L)all year012
Aluminum, total recoverablemonthly averagereport only (mg/L)all year012
Aluminum, total recoverabledaily maximumreport only (mg/L)all year012
Copper, total recoverablemonthly averagereport only (mg/L)all year012
Copper, total recoverabledaily maximumreport only (mg/L)all year012
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year012
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year012
Chlorine, total residualmonthly averagereport only (mg/L)all year012
Chlorine, total residualdaily maximumreport only (mg/L)all year012
Mercury, total [as Hg]monthly averagereport only (ug/L)all year012
Mercury, total [as Hg]daily maximumreport only (ug/L)all year012
pHinstantaneous minimumreport only (SU)all year013
pHinstantaneous maximumreport only (SU)all year013
Solids, total suspendedmonthly averagereport only (mg/L)all year013
Solids, total suspendeddaily maximumreport only (mg/L)all year013
Arsenic, total recoverablemonthly averagereport only (mg/L)all year013
Arsenic, total recoverabledaily maximumreport only (mg/L)all year013
Iron, total recoverablemonthly averagereport only (mg/L)all year013
Iron, total recoverabledaily maximumreport only (mg/L)all year013
Selenium, total recoverablemonthly averagereport only (mg/L)all year013
Selenium, total recoverabledaily maximumreport only (mg/L)all year013
Zinc, total recoverablemonthly averagereport only (mg/L)all year013
Zinc, total recoverabledaily maximumreport only (mg/L)all year013
Aluminum, total recoverablemonthly averagereport only (mg/L)all year013
Aluminum, total recoverabledaily maximumreport only (mg/L)all year013
Copper, total recoverablemonthly averagereport only (mg/L)all year013
Copper, total recoverabledaily maximumreport only (mg/L)all year013
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year013
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year013
Mercury, total [as Hg]monthly averagereport only (ug/L)all year013
Mercury, total [as Hg]daily maximumreport only (ug/L)all year013
BOD, 5-day, 20 deg. Cmonthly average≤ 30 mg/Lall year101
BOD, 5-day, 20 deg. Cmonthly average≤ 30 mg/Lall year101
BOD, 5-day, 20 deg. Cdaily maximum≤ 60 mg/Lall year101
BOD, 5-day, 20 deg. Cdaily maximum≤ 60 mg/Lall year101
BOD, 5-day, 20 deg. Cmonthly average≤ 9.14 lb/dall year101
BOD, 5-day, 20 deg. Cmonthly average≤ 9.14 lb/dall year101
BOD, 5-day, 20 deg. Cdaily maximum≤ 18.28 lb/dall year101
BOD, 5-day, 20 deg. Cdaily maximum≤ 18.28 lb/dall year101
pHinstantaneous minimum≥ 6 SUall year101
pHinstantaneous minimum≥ 6 SUall year101
pHinstantaneous maximum≤ 9 SUall year101
pHinstantaneous maximum≤ 9 SUall year101
Solids, total suspendedmonthly average≤ 30 mg/Lall year101
Solids, total suspendedmonthly average≤ 30 mg/Lall year101
Solids, total suspendeddaily maximum≤ 60 mg/Lall year101
Solids, total suspendeddaily maximum≤ 60 mg/Lall year101
Solids, total suspendedmonthly average≤ 9.14 lb/dall year101
Solids, total suspendedmonthly average≤ 9.14 lb/dall year101
Solids, total suspendeddaily maximum≤ 18.28 lb/dall year101
Solids, total suspendeddaily maximum≤ 18.28 lb/dall year101
Nitrogen, ammonia total [as N]monthly average≤ 15 mg/Lall year101
Nitrogen, ammonia total [as N]monthly average≤ 15 mg/Lall year101
Nitrogen, ammonia total [as N]daily maximum≤ 30 mg/Lall year101
Nitrogen, ammonia total [as N]daily maximum≤ 30 mg/Lall year101
Nitrogen, ammonia total [as N]monthly average≤ 4.5 lb/dall year101
Nitrogen, ammonia total [as N]monthly average≤ 4.5 lb/dall year101
Nitrogen, ammonia total [as N]daily maximum≤ 9 lb/dall year101
Nitrogen, ammonia total [as N]daily maximum≤ 9 lb/dall year101
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year101
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year101
Flow, in conduit or thru treatment plantdaily maximum≤ .036 MGDall year101
Flow, in conduit or thru treatment plantdaily maximum≤ .036 MGDall year101
Coliform, fecal generalmonthly geometric mean≤ 200 #/100mLall year101
Coliform, fecal generalmonthly geometric mean≤ 200 #/100mLall year101
Coliform, fecal generaldaily maximum≤ 400 #/100mLall year101
Coliform, fecal generaldaily maximum≤ 400 #/100mLall year101
Solids, total suspendedmonthly average≤ 30 mg/Lall year102
Solids, total suspendeddaily maximum≤ 100 mg/Lall year102
Oil and grease, hexane extr methodmonthly average≤ 15 mg/Lall year102
Oil and grease, hexane extr methoddaily maximum≤ 20 mg/Lall year102
Copper, total [as Cu]monthly average≤ 1 mg/Lall year102
Copper, total [as Cu]daily maximum≤ 1 mg/Lall year102
Iron, total [as Fe]monthly average≤ 1 mg/Lall year102
Iron, total [as Fe]daily maximum≤ 1 mg/Lall year102
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year102
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year102
Toxicity [chronic], Ceriodaphnia dubiamonthly average≤ 3.8 tox chronicall year301
Toxicity [chronic], Ceriodaphnia dubiadaily maximum≤ 7.7 tox chronicall year301
Toxicity [chronic], Pimephales promelas [Fathead Minnow]monthly average≤ 3.8 tox chronicall year301
Toxicity [chronic], Pimephales promelas [Fathead Minnow]daily maximum≤ 7.7 tox chronicall year301
Toxicity [chronic], Ceriodaphnia dubiamonthly average≤ 1.6 tox chronicall year401
Toxicity [chronic], Ceriodaphnia dubiadaily maximum≤ 3.3 tox chronicall year401
Toxicity [chronic], Pimephales promelas [Fathead Minnow]monthly average≤ 1.6 tox chronicall year401
Toxicity [chronic], Pimephales promelas [Fathead Minnow]daily maximum≤ 3.3 tox chronicall year401
Toxics, percent removalminimum 7-day average≥ 95 %all yearINT

How strict are these limits?

Cited limits by parameter: West Virginia's rules and the federal ones.

Same industry: the 24 Electric Services permits in West Virginia.

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Your permit document is the final word. As JSON: /api/v1/permits/WV0005339 · MCP: https://passage-data.com/mcp