MOUNT STORM POWER STATION
NPDES ID: WV0005525
X — SNC: Effluent violation (non-monthly average limit)
The facility discharged more of a pollutant than its permit allows, measured over a period other than a monthly average.
Violations
February 28, 2026
Temp. diff. between samp. & upstrm deg. F
120% over limit
Discharged 11 deg F against a permitted limit of 5 deg F (INST MAX)
DMR, Limited - Numeric Violation
December 31, 2025
Temp. diff. between samp. & upstrm deg. F
0% over limit
Discharged 0 deg F against a permitted limit of 0 deg F (INST MIN)
DMR, Monitor Only - Overdue
Temperature, water deg. fahrenheit
0% over limit
Discharged 0 deg F against a permitted limit of 0 deg F (INST MAX)
DMR, Monitor Only - Overdue
Temp. diff. between samp. & upstrm deg. F
0% over limit
Discharged 0 deg F against a permitted limit of 0 deg F (MO AVG)
DMR, Monitor Only - Overdue
Temperature, water deg. fahrenheit
0% over limit
Discharged 0 deg F against a permitted limit of 0 deg F (INST MIN)
DMR, Monitor Only - Overdue
Temp. diff. between samp. & upstrm deg. F
0% over limit
Discharged 0 deg F against a permitted limit of 5 deg F (INST MAX)
DMR, Limited - Overdue
Temperature, water deg. fahrenheit
0% over limit
Discharged 0 deg F against a permitted limit of 0 deg F (MO AVG)
DMR, Monitor Only - Overdue
June 30, 2025
Temp. diff. between samp. & upstrm deg. F
120% over limit
Discharged 11 deg F against a permitted limit of 5 deg F (INST MAX)
DMR, Limited - Numeric Violation
February 28, 2025
Temp. diff. between samp. & upstrm deg. F
20% over limit
Discharged 6 deg F against a permitted limit of 5 deg F (INST MAX)
DMR, Limited - Numeric Violation
December 31, 2024
Temp. diff. between samp. & upstrm deg. F
20% over limit
Discharged 6 deg F against a permitted limit of 5 deg F (INST MAX)
DMR, Limited - Numeric Violation
First flagged
April 14, 2026 (3 months ago)
Last confirmed
July 13, 2026 (24 days ago)