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. |
1141779 |
02/12/2025 |
OEV |
Total Coliform 5-Sample Median limit is 23 MPN/100 mL and reported value was 79 MPN/100 mL at EFF-001-D. |
Violation |
N |
eSMR |
St. Helena City WWTP |
442938 |
R2-2021-0004 |
N |
1141778 |
02/11/2025 |
OEV |
Total Coliform 5-Sample Median limit is 23 MPN/100 mL and reported value was 79 MPN/100 mL at EFF-001-D. |
Violation |
N |
eSMR |
St. Helena City WWTP |
442938 |
R2-2021-0004 |
N |
1141777 |
02/10/2025 |
OEV |
Total Coliform 5-Sample Median limit is 23 MPN/100 mL and reported value was 240 MPN/100 mL at EFF-001-D. |
Violation |
N |
eSMR |
St. Helena City WWTP |
442938 |
R2-2021-0004 |
N |
1141776 |
02/09/2025 |
OEV |
Total Coliform 5-Sample Median limit is 23 MPN/100 mL and reported value was 79 MPN/100 mL at EFF-001-D. |
Violation |
N |
eSMR |
St. Helena City WWTP |
442938 |
R2-2021-0004 |
N |
1141775 |
02/09/2025 |
OEV |
Total Coliform Daily Maximum limit is 240 MPN/100 mL and reported value was 1600 MPN/100 mL at EFF-001-D. |
Violation |
N |
eSMR |
St. Helena City WWTP |
442938 |
R2-2021-0004 |
N |
1141774 |
02/08/2025 |
OEV |
Total Coliform Daily Maximum limit is 240 MPN/100 mL and reported value was 1600 MPN/100 mL at EFF-001-D. |
Violation |
N |
eSMR |
St. Helena City WWTP |
442938 |
R2-2021-0004 |
N |
1141773 |
02/28/2025 |
CAT1 |
Total Suspended Solids (TSS) Monthly Average limit is 15 mg/L and reported value was 16.5 mg/L at EFF-001-D. |
Violation |
N |
eSMR |
St. Helena City WWTP |
442938 |
R2-2021-0004 |
N |
1141772 |
02/08/2025 |
CAT1 |
Biochemical Oxygen Demand (BOD) (5-day @ 20 Deg. C) Weekly Average limit is 25 mg/L and reported value was 34 mg/L at EFF-001-D. |
Violation |
N |
eSMR |
St. Helena City WWTP |
442938 |
R2-2021-0004 |
N |
1141771 |
02/08/2025 |
CAT1 |
Total Suspended Solids (TSS) Weekly Average limit is 20 mg/L and reported value was 38 mg/L at EFF-001-D. |
Violation |
N |
eSMR |
St. Helena City WWTP |
442938 |
R2-2021-0004 |
N |
1141770 |
02/27/2025 |
OEV |
Total Coliform Daily Maximum limit is 240 MPN/100 mL and reported value was 1600 MPN/100 mL at EFF-001-D. |
Violation |
N |
eSMR |
St. Helena City WWTP |
442938 |
R2-2021-0004 |
N |
1141769 |
02/08/2025 |
OEV |
Total Coliform 5-Sample Median limit is 23 MPN/100 mL and reported value was 79 MPN/100 mL at EFF-001-D. |
Violation |
N |
eSMR |
St. Helena City WWTP |
442938 |
R2-2021-0004 |
N |
1141768 |
02/17/2025 |
OEV |
Total Coliform Daily Maximum limit is 240 MPN/100 mL and reported value was 1600 MPN/100 mL. |
Violation |
N |
eSMR |
St. Helena City WWTP |
442938 |
R2-2021-0004 |
N |
1141698 |
02/04/2025 |
Deficient Monitoring |
On February 2, 2025, in preparation for the pending rain events, CMSA staff increased the flow weighted pulse count on a 24-hour composite sampler from 15 pulses to 30 pulses. Historical blending conditions due to rain events result in total flow conditions of 30-60 MG. However, on February 4, 2025, during a storm event, CMSA experienced significantly elevated blending flows of 84.8 million gallons. During this sample event, the flow weighted composite sample collected samples from 00:00 to 13:49. This composite sample collection does not meet the 24-hour Composite Sample requirements outlined in CMSA¿s NPDES Permit Order #R2-2023-006, Attachment G, Section 8.3, which resulted in a non-representative Blended Effluent (EFF-002b) sample collection. The Total suspended solids (TSS) result was not reported for this February 4, 2025. |
Violation |
N |
eSMR |
Central Marin San. Agcy. WWTP |
452582 |
R2-2023-0006 |
N |
1141246 |
03/02/2025 |
Late Report |
Monthly SMR ( MONNPDES ) report for January 2025 (2902077) was due on 01-MAR-25 |
Violation |
None |
Report |
West County Agency Outfall |
457271 |
R2-2024-0008 |
N |
1139434 |
12/22/2024 |
OEV |
Total Coliform Daily Maximum limit is 240 MPN/100 mL and reported value was 920 MPN/100 mL at EFF-001-D. |
Violation |
N |
eSMR |
St. Helena City WWTP |
442938 |
R2-2021-0004 |
N |
1139433 |
12/17/2024 |
OEV |
Total Coliform Daily Maximum limit is 240 MPN/100 mL and reported value was 540 MPN/100 mL at EFF-001-D. |
Violation |
N |
eSMR |
St. Helena City WWTP |
442938 |
R2-2021-0004 |
N |
1139432 |
12/19/2024 |
OEV |
Total Coliform Daily Maximum limit is 240 MPN/100 mL and reported value was 1600 MPN/100 mL at EFF-001-D. |
Violation |
N |
eSMR |
St. Helena City WWTP |
442938 |
R2-2021-0004 |
N |
1138301 |
11/30/2024 |
CAT2 |
Copper, Total Recoverable 1-Hour Average (Mean) limit is 8.3 ug/L and reported value was 9.0 ug/L at EFF-001. |
Violation |
N |
eSMR |
St. Helena City WWTP |
442938 |
R2-2021-0004 |
N |
1138300 |
11/30/2024 |
CAT1 |
Total Suspended Solids (TSS) Weekly Average (Mean) limit is 20 mg/L and reported value was 24 mg/L at EFF-001-D. |
Violation |
N |
eSMR |
St. Helena City WWTP |
442938 |
R2-2021-0004 |
N |
1138299 |
11/30/2024 |
CAT1 |
Total Suspended Solids (TSS) Monthly Average (Mean) limit is 15 mg/L and reported value was 24 mg/L at EFF-001-D. |
Violation |
N |
eSMR |
St. Helena City WWTP |
442938 |
R2-2021-0004 |
N |
1138298 |
11/30/2024 |
OEV |
Total Coliform 5-Sample Median limit is 23 MPN/100 mL and reported value was 49 MPN/100 mL at EFF-001-D. |
Violation |
N |
eSMR |
St. Helena City WWTP |
442938 |
R2-2021-0004 |
N |
1138296 |
11/21/2024 |
OEV |
Total Coliform Daily Maximum limit is 240 MPN/100 mL and reported value was 1600 MPN/100 mL at EFF-001T. |
Violation |
None |
Report |
Yountville / CA Vets Home WWTP |
440857 |
R2-2020-0026 |
N |
1138184 |
11/23/2024 |
OEV |
Total Coliform Daily Maximum limit is 240 MPN/100 mL and reported value was 280 MPN/100 mL at EFF-001S. |
Violation |
N |
eSMR |
Yountville / CA Vets Home WWTP |
440857 |
R2-2020-0026 |
N |
1131497 |
07/22/2024 |
ATOX |
Acute Toxicity 3-Sample Median limit is 90 % survival and reported value was 85 % survival at EFF-001. |
Violation |
N |
eSMR |
Delta Diablo WWTP |
435913 |
R2-2019-0035 |
N |
1128194 |
04/20/2024 |
CAT1 |
Total Suspended Solids (TSS) Weekly Average limit is 20 mg/L and reported value was 32 mg/L at EFF-001-D. |
Violation |
N |
eSMR |
St. Helena City WWTP |
442938 |
R2-2021-0004 |
N |
1128187 |
04/16/2024 |
OEV |
Total Coliform 5-Sample Median limit is 23 MPN/100 mL and reported value was 79 MPN/100 mL at EFF-001-D. |
Violation |
N |
eSMR |
St. Helena City WWTP |
442938 |
R2-2021-0004 |
N |
1128186 |
04/15/2024 |
OEV |
Total Coliform 5-Sample Median limit is 23 MPN/100 mL and reported value was 33 MPN/100 mL at EFF-001-D. |
Violation |
N |
eSMR |
St. Helena City WWTP |
442938 |
R2-2021-0004 |
N |
1128185 |
04/14/2024 |
OEV |
Total Coliform 5-Sample Median limit is 23 MPN/100 mL and reported value was 130 MPN/100 mL at EFF-001-D. |
Violation |
N |
eSMR |
St. Helena City WWTP |
442938 |
R2-2021-0004 |
N |
1128181 |
04/12/2024 |
OEV |
Total Coliform Daily Maximum limit is 240 MPN/100 mL and reported value was 1600 MPN/100 mL at EFF-001-D. |
Violation |
N |
eSMR |
St. Helena City WWTP |
442938 |
R2-2021-0004 |
N |
1128179 |
04/30/2024 |
CAT1 |
Total Suspended Solids (TSS) Monthly Average limit is 15 mg/L and reported value was 41.7 mg/L at EFF-001-D. |
Violation |
N |
eSMR |
St. Helena City WWTP |
442938 |
R2-2021-0004 |
N |
1128178 |
04/13/2024 |
CAT1 |
Total Suspended Solids (TSS) Weekly Average limit is 20 mg/L and reported value was 46 mg/L at EFF-001-D. |
Violation |
N |
eSMR |
St. Helena City WWTP |
442938 |
R2-2021-0004 |
N |
1128018 |
04/30/2024 |
CAT1 |
Total Suspended Solids (TSS) Monthly Average limit is 15 mg/L and reported value was 18.6 mg/L at EFF-001. |
Violation |
N |
eSMR |
Mt. View Sanitary District WWTP |
446024 |
R2-2021-0026 |
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.
|