| Violation ID |
Occurred Date |
Violation Type |
(-) Violation Description |
Corrective Action |
Status |
Classification |
Source |
| 1147910 |
08/17/2025 |
DMON |
During the reporting period of August 17-23, 2025, the North City Water Reclamation Plant (NCWRP) did not submit pH monitoring data for the reclaimed final effluent. This omission was due to a scheduled facility shutdown originally planned for August 18-22, 2025. At the time, it was anticipated that operations would resume on August 23, allowing for sample collection in accordance with permit requirements. However, the shutdown unexpectedly extended through August 23, preventing sampling and analysis on that date. |
Plan: To mitigate the impact of missing a required sample and help ensure future compliance, the laboratory will collaborate with operations to update procedures to include contingency plans for scheduled shutdowns, ensuring alternative sampling dates are clearly identified which includes collecting effluent samples immediately before a planned shutdown.
Implementation Date: November 30, 2025.
|
Violation |
U |
eSMR |
| 1144838 |
07/02/2025 |
LREP |
Annual SMR ( SUMRPT ) (Annual Title 22 Summary Report) report for 2024 (2973920) was due on 01-JUL-25 |
|
Violation |
B |
Report |
| 1144839 |
07/02/2025 |
LREP |
Annual SMR ( TECHRPT ) (Annual Outfall and Diffuser Inspection Report) report for 2024 (2997206) was due on 01-JUL-25 |
|
Violation |
B |
Report |
| 1145483 |
06/17/2025 |
DMON |
The calculation for unionized ammonia was not completed for RSW-001, RSW-002, and RSW-003 at the bi-monthly interval in accordance with the permit requirements. The Laboratory is currently not certified to perform this analysis in-house. Due to a laboratory error, the ammonia analysis required to complete the unionized ammonia calculation was not outsourced.
|
To prevent recurrence, the laboratory has implemented a comprehensive coordination and scheduling plan to ensure timely outsourcing of all baseline monitoring parameters that cannot be analyzed in-house. As part of this corrective initiative, a certified external laboratory has been formally designated to perform the required analyses moving forward.
|
Violation |
U |
eSMR |
| 1145484 |
06/17/2025 |
DMON |
The calculation for unionized ammonia was not completed for RSW-001, RSW-002, and RSW-003 at the bi-monthly interval in accordance with the permit requirements. The Laboratory is currently not certified to perform this analysis in-house. Due to a laboratory error, the ammonia analysis required to complete the unionized ammonia calculation was not outsourced.
|
To prevent recurrence, the laboratory has implemented a comprehensive coordination and scheduling plan to ensure timely outsourcing of all baseline monitoring parameters that cannot be analyzed in-house. As part of this corrective initiative, a certified external laboratory has been formally designated to perform the required analyses moving forward.
|
Violation |
U |
eSMR |
| 1142644 |
03/25/2025 |
CAT1 |
Biochemical Oxygen Demand (BOD) (5-day @ 20 Deg. C) Daily Maximum limit is 45 mg/L and reported value was 52 mg/L. |
To prevent this issue from recurring, flow will be diverted to the plant drain during similar future transitions, ensuring that any off-spec water does not enter the recycled wet well. |
Violation |
U |
eSMR |
| 1142645 |
03/03/2025 |
DMON |
On March 3, 2025, the North City Water Reclamation Plant recycled water discharge sample (N34 Rec H2O) was collected and prepared for total coliform analysis; however, the sample was inadvertently discarded prior to completing the analysis. |
The laboratory will implement a new labeling process and procedural change that requires samples be kept until the end of the day and until they the analysts have verified that results have been submitted. |
Violation |
U |
eSMR |
| 1141236 |
03/02/2025 |
LREP |
Annual SMR ( PRETRPT ) (Annual Pretreatment Report) report for 2024 (2809945) was due on 01-MAR-25 |
|
Violation |
B |
Report |
| 1141730 |
03/02/2025 |
LREP |
Annual SMR ( PRETRPT ) (Annual Pretreatment Report) report for 2024 (2973919) was due on 01-MAR-25 |
|
Violation |
B |
Report |
| 1141235 |
03/02/2025 |
LREP |
Annual SMR ( SURF_WATER ) (Annual Receiving Water Monitoring Report) report for 2024 (2809947) was due on 01-MAR-25 |
|
Violation |
B |
Report |
| 1141234 |
03/02/2025 |
LREP |
Annual SMR ( SURF_WATER ) (CEDEN Certification) report for 2024 (2809944) was due on 01-MAR-25 |
|
Violation |
B |
Report |
| 1141729 |
02/20/2025 |
LREP |
Annual SMR ( SLUDGE ) (Annual Biosolids Report) report for 2024 (2973986) was due on 19-FEB-25 |
|
Violation |
B |
Report |
| 1131505 |
07/22/2024 |
DMON |
Monitoring for Methylene Blue‐Activated Substances (MBAS) is required monthly at the plant effluent (N34‐REC WATER), however the result for the sample that was collected on 7/22/24 for the month of July is invalid due to failed QC. MBAS analysis is normally carried out by the City¿s South Bay Wastewater Chemistry Laboratory but beginning in July this analysis was outsourced to Alpha Analytical Laboratories, Inc. After reviewing the report from Alpha Labs, it was determined that the results were invalid due to failed batch QC requirements, however this was not discovered in time to collect replacement samples for the month of July. |
Moving forward the data from outsourced analyses will be reviewed by at least two analysts/supervisors and this will be done by the third week of the month to ensure that there is time to collect replacement samples if needed. |
Violation |
U |
eSMR |
| 1141727 |
07/02/2024 |
LREP |
Annual SMR ( SUMRPT ) (Annual Title 22 Summary Report) report for 2023 (2973915) was due on 01-JUL-24 |
|
Violation |
B |
Report |
| 1143982 |
07/02/2024 |
LREP |
Annual SMR ( TECHRPT ) (Annual Outfall and Diffuser Inspection Report) report for 2023 (2997205) was due on 01-JUL-24 |
|
Violation |
B |
Report |
| 1141728 |
07/02/2024 |
LREP |
Annual SMR ( TECHRPT ) (Annual Outfall and Diffuser Inspection Report) report for 2024 (2973922) was due on 01-JUL-24 |
|
Violation |
B |
Report |
| 1141726 |
03/02/2024 |
LREP |
Annual SMR ( PRETRPT ) (Annual Pretreatment Report) report for 2023 (2973914) was due on 01-MAR-24 |
|
Violation |
B |
Report |
| 1141725 |
02/20/2024 |
LREP |
Annual SMR ( SLUDGE ) (Annual Biosolids Report) report for 2023 (2973985) was due on 19-FEB-24 |
|
Violation |
B |
Report |
| 1123402 |
01/16/2024 |
LREP |
Monthly SMR ( SURF_WATER ) (Monthly Receiving Water Monitoring Report) report for December 2023 (2778246) was due on 15-JAN-24 |
|
Violation |
B |
Report |
| 1123512 |
12/07/2023 |
OEV |
pH Daily Minimum limit is 6.5 SU and reported value was 6.47 SU. |
Laboratory management is in the process of creating an NPDES permit training for staff that will discuss permit requirements for each parameter monitored and provide a workflow to guide employees through each step of sample collection and monitoring. Additionally, the training will indicate who should be notified in the event of values that are potentially out-of-range. Training will reinforce our existing protocol and notification procedures. In addition, the pH worksheets have added a flag to help assist analysts during their review of the data. |
Violation |
U |
eSMR |
| 1141724 |
11/02/2023 |
LREP |
Annual SMR ( SURF_WATER ) (CEDEN Certification) report for 2022 (2973973) was due on 01-NOV-23 |
|
Violation |
B |
Report |
| 1124129 |
07/02/2023 |
LREP |
Annual SMR ( SUMRPT ) (Annual Title 22 Summary Report) report for 2022 (2809936) was due on 01-JUL-23 |
|
Violation |
B |
Report |
| 1141721 |
07/02/2023 |
LREP |
Annual SMR ( SUMRPT ) (Annual Title 22 Summary Report) report for 2022 (2973910) was due on 01-JUL-23 |
|
Violation |
B |
Report |
| 1141722 |
07/02/2023 |
LREP |
Annual SMR ( SURF_WATER ) (Annual Receiving Water Monitoring Report) report for 2022 (2973913) was due on 01-JUL-23 |
|
Violation |
B |
Report |
| 1143981 |
07/02/2023 |
LREP |
Annual SMR ( TECHRPT ) (Annual Outfall and Diffuser Inspection Report) report for 2022 (2997204) was due on 01-JUL-23 |
|
Violation |
B |
Report |
| 1124130 |
07/02/2023 |
LREP |
Annual SMR ( TECHRPT ) (Annual Outfall and Diffuser Inspection Report) report for 2023 (2809943) was due on 01-JUL-23 |
|
Violation |
B |
Report |
| 1141723 |
07/02/2023 |
LREP |
Annual SMR ( TECHRPT ) (Annual Outfall and Diffuser Inspection Report) report for 2023 (2973917) was due on 01-JUL-23 |
|
Violation |
B |
Report |
| 1124127 |
03/02/2023 |
LREP |
Annual SMR ( PRETRPT ) (Annual Pretreatment Report) report for 2022 (2809935) was due on 01-MAR-23 |
|
Violation |
B |
Report |
| 1141720 |
03/02/2023 |
LREP |
Annual SMR ( PRETRPT ) (Annual Pretreatment Report) report for 2022 (2973909) was due on 01-MAR-23 |
|
Violation |
B |
Report |
| 1124128 |
03/02/2023 |
LREP |
Annual SMR ( SURF_WATER ) (Annual Receiving Water Monitoring Report) report for 2022 (2809937) was due on 01-MAR-23 |
|
Violation |
B |
Report |
| 1124126 |
03/02/2023 |
LREP |
Annual SMR ( SURF_WATER ) (CEDEN Certification) report for 2022 (2809934) was due on 01-MAR-23 |
|
Violation |
B |
Report |
| 1112442 |
01/15/2023 |
UAUTHDISC |
1-Hour Average (Mean) limit is 50000 gallons and reported value was 6080000 gallons. |
|
Violation |
B |
Report |
| 1112443 |
01/15/2023 |
UAUTHDISC |
1-Hour Average (Mean) limit is 50000 gallons and reported value was 6080000 gallons. |
|
Violation |
B |
Report |
|
Report displays most recent five years of violations. Refer to the Interactive Violation Report for more data.
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