| Violation ID |
Occurrence Date |
Violation Type |
Violation Description(-) |
Violation Status |
Priority |
Source |
Facility Name |
Violated Reg. Meas. ID |
Violated Reg. Meas. Order No. |
Linked to Enf. |
| 1147957 |
06/12/2025 |
Deficient Monitoring |
A total coliform result was not reported on 06/12/2025. The Discharger stated the total coliform samples were collected on 06 June 2025 but could not provide results due to a laboratory error. |
Violation |
N |
eSMR |
Woodland Water Pollution Control Facility |
438341 |
R5-2020-0015 |
Y |
| 1141741 |
02/26/2025 |
Deficient Monitoring |
The Discharger stated the total coliform samples collected on 25 and 26 February 2025 were not properly stored and incubated at the correct temperature. Therefore, the analyses performed on the samples were considered invalid. The Discharger plans to retrain staff and perform a corrective action and root cause analysis to prevent this from happening in the future. |
Violation |
N |
eSMR |
Woodland Water Pollution Control Facility |
438341 |
R5-2020-0015 |
Y |
| 1141740 |
02/25/2025 |
Deficient Monitoring |
The Discharger stated the total coliform samples collected on 25 and 26 February 2025 were not properly stored and incubated at the correct temperature. Therefore, the analyses performed on the samples were considered invalid. |
Violation |
N |
eSMR |
Woodland Water Pollution Control Facility |
438341 |
R5-2020-0015 |
Y |
| 1147958 |
06/05/2025 |
OEV |
Total Coliform 7-Day Median limit is 2.2 MPN/100 mL and reported value was 7.8 MPN/100 mL at EFF-001. |
Violation |
N |
eSMR |
Woodland Water Pollution Control Facility |
438341 |
R5-2020-0015 |
Y |
| 1147959 |
06/04/2025 |
OEV |
Total Coliform 7-Day Median limit is 2.2 MPN/100 mL and reported value was 6.8 MPN/100 mL at EFF-001. |
Violation |
N |
eSMR |
Woodland Water Pollution Control Facility |
438341 |
R5-2020-0015 |
Y |
| 1139631 |
12/31/2024 |
CTOX |
Chronic Toxicity 3-Sample Median limit is 25 % effect and reported value was 46 % effect at EFF-001. |
Violation |
N |
eSMR |
UC Davis Main WWTP |
442761 |
R5-2021-0007 |
Y |
| 1143348 |
05/02/2025 |
Late Report |
Quarterly SMR ( MONNPDES ) report for Q1 2025 (2463142) was due on 01-MAY-25 |
Violation |
None |
Report |
UC Davis Main WWTP |
442761 |
R5-2021-0007 |
Y |
| 1144379 |
05/27/2025 |
OEV |
Total Coliform 7-Day Median limit is 2.2 MPN/100 mL and reported value was 3.3 MPN/100 mL at UVS-002. |
Violation |
N |
eSMR |
UC Davis Main WWTP |
442761 |
R5-2021-0007 |
Y |
| 1143384 |
02/19/2025 |
CTOX |
Chronic Toxicity-C.dubia-Reproduction 3-Sample Median limit is 25 % effect and reported value was 57.9 % effect at EFF-001. |
Violation |
N |
eSMR |
UC Davis Main WWTP |
442761 |
R5-2021-0007 |
Y |
| 1148312 |
09/30/2025 |
CAT1 |
Ammonia, Total (as N) Monthly Average limit is 1.3 mg/L and reported value was 2.7 mg/L at EFF-001. |
Violation |
N |
eSMR |
Thunder Valley Casino WWTP |
442169 |
R5-2023-0025 |
N |
| 1148313 |
09/03/2025 |
CAT1 |
Ammonia, Total (as N) Weekly Average limit is 2.7 mg/L and reported value was 4.6 mg/L at EFF-001. |
Violation |
N |
eSMR |
Thunder Valley Casino WWTP |
442169 |
R5-2023-0025 |
N |
| 1148314 |
09/10/2025 |
CAT1 |
Ammonia, Total (as N) Weekly Average limit is 2.7 mg/L and reported value was 6.2 mg/L at EFF-001. |
Violation |
N |
eSMR |
Thunder Valley Casino WWTP |
442169 |
R5-2023-0025 |
N |
| 1145662 |
04/26/2025 |
Deficient Monitoring |
Weekly monitoring for dissolved oxygen, pH, and temperature was not performed for the week ending 26 April 2025. The Discharger stated the missed monitoring was due to a one-day schedule change and a misunderstanding of the required reporting period for weekly monitoring. Weekly monitoring for all parameters was performed the weeks prior to, and after the week ending 26 April 2025. |
Violation |
N |
Report |
Sterling Caviar LLC, Elverta |
447011 |
R5-2022-0005 |
Y |
| 1138442 |
11/22/2024 |
Surface Water |
Receiving Water Violation: During Event #1, the turbidity increased from the upstream receiving water location (16.3 NTU, RSW-001; Delta King) to the downstream receiving water location (31.4 NTU, RSW-002; Miller Park) by greater than 20%, exceeding the receiving water limitations. During CSO events in the past, receiving water limitations for turbidity have occasionally been exceeded. Previous evaluations have determined that turbidity can vary in the Sacramento River over the course of storm events, but the variability was not necessarily related to CSO events. Additionally, during prior turbidity self-reported violations, the Central Valley Regional Water Quality Control Board (CVRQCB) noted that the CSS was not the only contributor to turbidity during the event, and the Notice of Violation was reversed. |
Violation |
N |
eSMR |
Sac City Combined WW Collection/TRT Sys |
440651 |
R5-2020-0039 |
Y |
| 1142106 |
02/04/2025 |
Unauthorized Discharge |
the Pioneer Reservoir on 04 February 2025. The lapse sodium bisulfite dosing likely resulted in a discharge of treated wastewater with residual chlorine above the effluent limitations identified in the WDRs. The Discharger estimated that elevated levels of residual chlorine were discharged for approximately four minutes at the beginning of the discharge event. |
Violation |
N |
Report |
Sac City Combined WW Collection/TRT Sys |
440651 |
R5-2020-0039 |
Y |
| 1141696 |
02/04/2025 |
Surface Water |
During Event #3, the turbidity increased from the upstream receiving water location (RSW-001; Delta King 29.1 NTU) to the downstream receiving water location (RSW-002; Miller Park 51.3 NTU) by greater than 20%, The turbidity decreased from the upstream receiving water location (RSW-003; Westin Boat Dock 40.5 NTU) to the downstream receiving water location (RSW-004; Zacharias Park 24.9 NTU), meeting receiving water limitations. It¿s important to note that RSW-004 (24.9 NTU), the furthest downstream, received water was lower than RSW-001 (29.1 NTU), further indicating that the CSS is not contributing to increased turbidity in the Sacramento River during CSO events. During CSO events in the past, receiving water limitations for turbidity have occasionally been exceeded. Previous evaluations have determined that turbidity can vary in the Sacramento River over the course of storm events, but the variability was not necessarily related to CSO events. Additionally, during prior turbidity self-reported violations, the Central Valley Regional Water Quality Control Board (CVRQCB) noted that the CSS was not the only contributor to turbidity during the event, and the Notice of Violation was reversed. |
Violation |
N |
eSMR |
Sac City Combined WW Collection/TRT Sys |
440651 |
R5-2020-0039 |
Y |
| 1145897 |
07/05/2025 |
Deficient Monitoring |
Final Effluent Total Suspended Solids(TSS) Analysis was not performed for the week ending July 5, 2025. Pleasant Grove NOA requires one TSS analysis on the Final Effluent composite per week. |
Violation |
N |
eSMR |
Pleasant Grove WWTP |
432817 |
R5-2023-0025 |
Y |
| 1148360 |
09/10/2025 |
OEV |
Total Coliform 7-Day Median limit is 2.2 MPN/100 mL and reported value was 4.5 MPN/100 mL at EFF-001. |
Violation |
N |
eSMR |
Nevada City WWTP |
448476 |
R5-2022-0039 |
N |
| 1148361 |
09/11/2025 |
OEV |
Total Coliform 7-Day Median limit is 2.2 MPN/100 mL and reported value was 4.5 MPN/100 mL at EFF-001. |
Violation |
N |
eSMR |
Nevada City WWTP |
448476 |
R5-2022-0039 |
N |
| 1140613 |
01/28/2025 |
Deficient Monitoring |
Contract lab failed to perform the nitrate analysis within the required hold time for the LND-002 sample. |
Violation |
N |
eSMR |
Lincoln City WWTF |
456827 |
R5-2024-0024 |
Y |
| 1140071 |
02/02/2025 |
Late Report |
Semi-Annual SMR ( MONNPDES ) report for H2 2024 (2841871) was due on 01-FEB-25 |
Violation |
None |
Report |
Lincoln City WWTF |
456827 |
R5-2024-0024 |
N |
| 1145101 |
04/07/2025 |
Groundwater |
Groundwater pH was below the groundwater quality goal at MW-4. |
Violation |
N |
eSMR |
Lincoln City WWTF |
456827 |
R5-2024-0024 |
N |
| 1145100 |
04/07/2025 |
Groundwater |
Groundwater pH was below the groundwater quality goal at MW-2. |
Violation |
N |
eSMR |
Lincoln City WWTF |
456827 |
R5-2024-0024 |
N |
| 1146068 |
08/02/2025 |
Late Report |
Semi-Annual SMR ( MONNPDES ) report for H1 2025 (2841872) was due on 01-AUG-25 |
Violation |
None |
Report |
Lincoln City WWTF |
456827 |
R5-2024-0024 |
N |
| 1145099 |
04/07/2025 |
Groundwater |
Groundwater pH was below the groundwater water quality goal at MW-5. |
Violation |
N |
eSMR |
Lincoln City WWTF |
456827 |
R5-2024-0024 |
N |
| 1145102 |
04/07/2025 |
Groundwater |
MW-3 had a total manganese and pH low, water quality goal exceedance. |
Violation |
N |
eSMR |
Lincoln City WWTF |
456827 |
R5-2024-0024 |
N |
| 1145103 |
04/07/2025 |
Groundwater |
MW-1 exceeded its groundwater quality goal for total coliform had a pH value lower than the groundwater quality goal. |
Violation |
N |
eSMR |
Lincoln City WWTF |
456827 |
R5-2024-0024 |
N |
| 1145198 |
06/03/2025 |
Order Conditions |
Turbidity instantaneous maximum limit is 0.500 NTU and the reporting value was 0.626 NTU @ Eff-001 |
Violation |
N |
eSMR |
Lake of the Pines WWTP |
439955 |
R5-2023-0025 |
N |
| 1138267 |
11/07/2024 |
Order Conditions |
Turbidity instantaneous maximum limit is 0.5 NTU and reporting value was 0.580 at EFF-001 |
Violation |
N |
eSMR |
Lake of the Pines WWTP |
439955 |
R5-2023-0025 |
Y |
| 1140604 |
01/21/2025 |
Order Conditions |
Turbidity exceeded 0.2 NTU for 106 minutes on 1/21 where the limit is no greater than 0.2 NTU for 5% of the day. We also exceeded 0.2 NTU for 5% of the day on 1/23, 1/24, 1/25, 1/26 and 1/29. These spikes were caused by a leak detected in an air header that was repaired on 1/23 and fully functional by 1/27. |
Violation |
N |
eSMR |
Lake of the Pines WWTP |
439955 |
R5-2023-0025 |
Y |
| 1140605 |
01/09/2025 |
Order Conditions |
Turbidity instantaneous maximum limit is 0.500 NTU & the reporting value was 0.583 @ EFF-001 |
Violation |
N |
eSMR |
Lake of the Pines WWTP |
439955 |
R5-2023-0025 |
Y |
| 1145221 |
06/25/2025 |
Surface Water |
On June 25, 2025, Receiving Stream natural temperature was measured to have increased beyond the allowable increase of 5°F between RSW-001 and RSW-002 set forth in Section VI.A.16.a of Order R5-2017-0085-01. It was not recognized upon sampling and there was no further investigation into the cause that day. |
Violation |
N |
eSMR |
Lake Wildwood WWTP |
439953 |
R5-2023-0025 |
N |
| 1145162 |
04/02/2025 |
Order Conditions |
Temperature Difference Between Sample and Upstream Instantaneous Maximum limit is 5 Degrees C and reported value was 10.5 Degrees C at RSW-001D. |
Violation |
N |
eSMR |
Empire Mine State Historic Park |
413314 |
R5-2022-0006-02 |
N |
| 1142810 |
02/04/2025 |
CAT1 |
Manganese, Total Monthly Average limit is 80 ug/L and reported value was 100 ug/L at EFF-001. |
Violation |
N |
eSMR |
Empire Mine State Historic Park |
413314 |
R5-2022-0006-02 |
N |
| 1143712 |
04/09/2025 |
CAT2 |
Zinc, Total Recoverable Monthly Average limit is 30 ug/L and reported value was 37 ug/L at EFF-001. |
Violation |
N |
eSMR |
Donner Summit PUD WWTP |
443214 |
R5-2021-0023 |
Y |
| 1140600 |
01/31/2025 |
CAT2 |
Zinc, Total Monthly Average limit is 30 ug/L and reported value was 56 ug/L at EFF-001. |
Violation |
N |
eSMR |
Donner Summit PUD WWTP |
443214 |
R5-2021-0023 |
Y |
| 1146070 |
08/02/2025 |
Late Report |
Semi-Annual SMR ( MONNPDES ) report for H1 2025 (2938042) was due on 01-AUG-25 |
Violation |
None |
Report |
Deuel Vocational Institution |
432991 |
R5-2019-0047 |
N |
| 1146071 |
08/02/2025 |
Late Report |
Quarterly SMR ( MONNPDES ) report for Q2 2025 (2938040) was due on 01-AUG-25 |
Violation |
None |
Report |
Deuel Vocational Institution |
432991 |
R5-2019-0047 |
N |
| 1139034 |
01/02/2025 |
Late Report |
Monthly SMR ( MONNPDES ) report for November 2024 (2896185) was due on 01-JAN-25 |
Violation |
None |
Report |
Deuel Vocational Institution |
432991 |
R5-2019-0047 |
N |
| 1144001 |
06/02/2025 |
Late Report |
Monthly SMR ( MONNPDES ) report for April 2025 (2953404) was due on 01-JUN-25 |
Violation |
None |
Report |
Deuel Vocational Institution |
432991 |
R5-2019-0047 |
N |
| 1142334 |
02/06/2025 |
Sanitary Sewer Overflow/Spill/ |
Type: Category 1 Spill; Fats, Oil and Grease (FOG) caused 8900 gallons of sewage to spill from Manhole at 1540 Lincoln St. to Surface Water,Street/Curb and Gutter (2 3),Drainage Conveyance System that discharges to surface water |
Violation |
None |
SSO |
City of Stockton MUD CS |
318618 |
2022-0103-DWQ |
N |
| 1136547 |
10/31/2024 |
CAT1 |
Nitrite Plus Nitrate (as N) Monthly Average (Mean) limit is 10 mg/L and reported value was 11.8 mg/L at EFF-001. |
Violation |
N |
eSMR |
Cascade Shores WWTP |
442921 |
R5-2023-0025 |
Y |
| 1147940 |
08/05/2025 |
CAT2 |
Bis (2-Ethylhexyl) Phthalate Weekly Average limit is 5 ug/L and reported value was 24 ug/L at EFF-001. |
Violation |
N |
eSMR |
Auburn WWTP |
448871 |
R5-2023-0025 |
Y |
| 1147939 |
08/05/2025 |
CAT2 |
Bis (2-Ethylhexyl) Phthalate Monthly Average limit is 1.8 ug/L and reported value was 24 ug/L at EFF-001. |
Violation |
N |
eSMR |
Auburn WWTP |
448871 |
R5-2023-0025 |
Y |
|
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