CASTAIC POWER PLANT
NPDES ID: CA0055824
E — SNC: Effluent violation (monthly average limit)
The facility discharged more of a pollutant than its permit allows, based on a monthly average.
This quarter: 1 effluent violation.
Violations
June 30, 2026
Copper, total recoverable
22% over limit
Discharged 0.0079 mg/L against a permitted limit of 0.0065 mg/L (MO AVG)
DMR, Limited - Numeric Violation
March 31, 2026
Solids, total suspended
97% over limit
Discharged 176.65139852 kg/d against a permitted limit of 89.89199924 kg/d (DAILY MX)
DMR, Limited - Numeric Violation
Copper, total recoverable
22% over limit
Discharged 0.016 mg/L against a permitted limit of 0.0131 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Solids, total suspended
34% over limit
Discharged 67 mg/L against a permitted limit of 50 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Copper, total recoverable
26% over limit
Discharged 0.0082 mg/L against a permitted limit of 0.0065 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
195% over limit
Discharged 176.65139852 kg/d against a permitted limit of 59.9279995 kg/d (MO AVG)
DMR, Limited - Numeric Violation
First flagged
April 14, 2026 (5 months ago)
Last confirmed
September 15, 2026 (5 days ago)