LONG BEACH GENERATING STATION
NPDES ID: CA0001171
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.
This quarter: 6 effluent violations.
Violations
June 30, 2026
Mercury, total recoverable
947801% over limit
Discharged 0.60248559 kg/d against a permitted limit of 0.00006356 kg/d (MO AVG)
DMR, Limited - Numeric Violation
Mercury, total recoverable
8188% over limit
Discharged 0.0003315 mg/L against a permitted limit of 0.000004 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Mercury, total recoverable
8900% over limit
Discharged 0.00036 mg/L against a permitted limit of 0.000004 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Mercury, total recoverable
1029294% over limit
Discharged 0.654283 kg/d against a permitted limit of 0.00006356 kg/d (DAILY MX)
DMR, Limited - Numeric Violation
May 31, 2026
Chlorine, total residual
20% over limit
Discharged 0.12 mg/L against a permitted limit of 0.1 mg/L (MAXIMUM)
DMR, Limited - Numeric Violation
April 30, 2026
Chlorine, total residual
30% over limit
Discharged 0.13 mg/L against a permitted limit of 0.1 mg/L (MAXIMUM)
DMR, Limited - Numeric Violation
May 31, 2025
Cyanide, total recoverable
1770% over limit
Discharged 0.0187 mg/L against a permitted limit of 0.001 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Cyanide, total recoverable
261% over limit
Discharged 0.05902 kg/d against a permitted limit of 0.016344 kg/d (DAILY MX)
DMR, Limited - Numeric Violation
March 31, 2025
Nickel, total recoverable
106% over limit
Discharged 0.00596 mg/L against a permitted limit of 0.0029 mg/L (MO AVG)
DMR, Limited - Numeric Violation
January 31, 2025
Nickel, total recoverable
18% over limit
Discharged 0.0126 mg/L against a permitted limit of 0.0107 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Chlorine, total residual
20% over limit
Discharged 0.12 mg/L against a permitted limit of 0.1 mg/L (MAXIMUM)
DMR, Limited - Numeric Violation
Nickel, total recoverable
17% over limit
Discharged 0.0034 mg/L against a permitted limit of 0.0029 mg/L (MO AVG)
DMR, Limited - Numeric Violation
First flagged
April 14, 2026 (4 months ago)
Last confirmed
August 16, 2026 (yesterday)