We were not able to collect the semi-annual samples at William E. Warne powerplant in February because the powerplant is offline. The State Water Project Operations Control (POC) Office, which creates daily water and power operation schedules, directed Warne powerplant to go offline. Also, maintenance is being conducted on one of the generators. Semi-annual samples were collected in March.
Violation
N
eSMR
William E Warne Power Plant
446992
R4-2022-0237
N
1153745
02/18/2026
Deficient Monitoring
We were not able to collect the semi-annual samples at William E. Warne powerplant in February because the powerplant is offline. The State Water Project Operations Control (POC) Office, which creates daily water and power operation schedules, directed Warne powerplant to go offline. Also, maintenance is being conducted on one of the generators. Semi-annual samples were collected in March.
Violation
N
eSMR
William E Warne Power Plant
446992
R4-2022-0237
N
1153744
02/18/2026
Deficient Monitoring
We were not able to collect the semi-annual samples at William E. Warne powerplant in February because the powerplant is offline. The State Water Project Operations Control (POC) Office, which creates daily water and power operation schedules, directed Warne powerplant to go offline. Also, maintenance is being conducted on one of the generators. Semi-annual samples were collected in March.
Violation
N
eSMR
William E Warne Power Plant
446992
R4-2022-0237
N
1153743
02/18/2026
Deficient Monitoring
We were not able to collect the semi-annual samples at William E. Warne powerplant in February because the powerplant is offline. The State Water Project Operations Control (POC) Office, which creates daily water and power operation schedules, directed Warne powerplant to go offline. Also, maintenance is being conducted on one of the generators. Semi-annual samples were collected in March.
Violation
N
eSMR
William E Warne Power Plant
446992
R4-2022-0237
N
1153742
03/18/2026
CAT1
Biochemical Oxygen Demand (BOD) (5-day @ 20 Deg. C) Daily Maximum limit is 10 mg/L and reported value was 29 mg/L at EFF-002.
Violation
N
eSMR
William E Warne Power Plant
446992
R4-2022-0237
N
1150721
10/09/2025
Deficient Reporting
Water quality samples were collected in early October and submitted to DWR's contract analytical laboratory. However, an unresolvable contract issue developed between DWR and the laboratory. As a result, the October samples were not analyzed. No samples were collected in November 2025 and December 2025 due to the plant being offline for plant maintenance. Water quality samples were collected on 1/26/2026 and were submitted to DWR's new analytical laboratory.
Violation
N
eSMR
William E Warne Power Plant
446992
R4-2022-0237
N
1150720
10/09/2025
Deficient Reporting
Water quality samples were collected in early October and submitted to DWR's contract analytical laboratory. However, an unresolvable contract issue developed between DWR and the laboratory. As a result, the October samples were not analyzed. No samples were collected in November 2025 and December 2025 due to the plant being offline for plant maintenance. Water quality samples were collected on 1/26/2026 and were submitted to DWR's new analytical laboratory.
Violation
N
eSMR
William E Warne Power Plant
446992
R4-2022-0237
N
1150719
10/09/2025
Deficient Reporting
Water quality samples were collected in early October and submitted to DWR's contract analytical laboratory. However, an unresolvable contract issue developed between DWR and the laboratory. As a result, the October samples were not analyzed. No samples were collected in November 2025 and December 2025 due to the plant being offline for plant maintenance. Water quality samples were collected on 1/26/2026 and were submitted to DWR's new analytical laboratory.
Violation
N
eSMR
William E Warne Power Plant
446992
R4-2022-0237
N
1150718
10/09/2025
Deficient Reporting
Water quality samples were collected in early October and submitted to DWR's contract analytical laboratory. However, an unresolvable contract issue developed between DWR and the laboratory. As a result, the October samples were not analyzed. No samples were collected in November 2025 and December 2025 due to the plant being offline for plant maintenance. Water quality samples were collected on 1/26/2026 and were submitted to DWR's new analytical laboratory.
Violation
N
eSMR
William E Warne Power Plant
446992
R4-2022-0237
N
Report defaults to display violations within the last year. Click here to see last five years of violations. Refer to the Interactive Violation Report for more data.
Total Violations: 9
*Click the "(+/-) Violation Description" link to expand and contract the violation description.
Total Regulatory Measures linked to Related Parties: 4
The current report was generated with data as of: 10/07/2026
Regional Boards are in the process of entering backlogged data.
As a result, data may be incomplete.