EL CENTRO GENERATING STATION
NPDES ID: CA0104248
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: 6 effluent violations.
Violations
June 30, 2026
Copper, total recoverable
643% over limit
Discharged 0.13000001 mg/L against a permitted limit of 0.0175 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Copper, total recoverable
203% over limit
Discharged 0.13000001 mg/L against a permitted limit of 0.0429 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Copper, total recoverable
17% over limit
Discharged 0.07718 kg/d against a permitted limit of 0.06583 kg/d (MO AVG)
DMR, Limited - Numeric Violation
Selenium, total recoverable
72% over limit
Discharged 0.0062 mg/L against a permitted limit of 0.0036 mg/L (MO AVG)
DMR, Limited - Numeric Violation
May 31, 2026
Copper, total recoverable
89% over limit
Discharged 0.033 mg/L against a permitted limit of 0.0175 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Selenium, total recoverable
100% over limit
Discharged 0.0072 mg/L against a permitted limit of 0.0036 mg/L (MO AVG)
DMR, Limited - Numeric Violation
November 30, 2025
Selenium, total recoverable
47% over limit
Discharged 0.0053 mg/L against a permitted limit of 0.0036 mg/L (MO AVG)
DMR, Limited - Numeric Violation
October 31, 2025
Selenium, total recoverable
67% over limit
Discharged 0.006 mg/L against a permitted limit of 0.0036 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Copper, total recoverable
31% over limit
Discharged 0.023 mg/L against a permitted limit of 0.0175 mg/L (MO AVG)
DMR, Limited - Numeric Violation
September 30, 2025
Copper, total recoverable
72% over limit
Discharged 0.1135 kg/d against a permitted limit of 0.06583 kg/d (MO AVG)
DMR, Limited - Numeric Violation
Selenium, total recoverable
75% over limit
Discharged 0.0063 mg/L against a permitted limit of 0.0036 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Copper, total recoverable
231% over limit
Discharged 0.058 mg/L against a permitted limit of 0.0175 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Copper, total recoverable
35% over limit
Discharged 0.058 mg/L against a permitted limit of 0.0429 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
August 31, 2025
Copper, total recoverable
334% over limit
Discharged 0.076 mg/L against a permitted limit of 0.0175 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Selenium, total recoverable
58% over limit
Discharged 0.0057 mg/L against a permitted limit of 0.0036 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Copper, total recoverable
77% over limit
Discharged 0.076 mg/L against a permitted limit of 0.0429 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Solids, total suspended
3% over limit
Discharged 31 mg/L against a permitted limit of 30 mg/L (MO AVG)
DMR, Limited - Numeric Violation
July 31, 2025
Selenium, total recoverable
117% over limit
Discharged 0.0078 mg/L against a permitted limit of 0.0036 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Copper, total recoverable
9% over limit
Discharged 0.019 mg/L against a permitted limit of 0.0175 mg/L (MO AVG)
DMR, Limited - Numeric Violation
June 30, 2025
Selenium, total recoverable
114% over limit
Discharged 0.0077 mg/L against a permitted limit of 0.0036 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Copper, total recoverable
26% over limit
Discharged 0.022 mg/L against a permitted limit of 0.0175 mg/L (MO AVG)
DMR, Limited - Numeric Violation
May 31, 2025
Selenium, total recoverable
75% over limit
Discharged 0.0063 mg/L against a permitted limit of 0.0036 mg/L (MO AVG)
DMR, Limited - Numeric Violation
First flagged
April 14, 2026 (4 months ago)
Last confirmed
August 16, 2026 (12 minutes ago)