| 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. |
| 1149453 |
10/06/2025 |
CTOX |
Chronic Toxicity-C.dubia-Reproduction Other and reported value was 33.6 % effect at EFF-001. |
Violation |
N |
eSMR |
Sonoma Valley County SD WWTP |
459395 |
R2-2024-0027 |
N |
| 1149452 |
10/29/2025 |
Deficient Monitoring |
Both INF-001 and EFF-001 BODs were not set up within the required 48hr hold time by Alpha Labs. |
Violation |
N |
eSMR |
Sonoma Valley County SD WWTP |
459395 |
R2-2024-0027 |
N |
| 1149451 |
10/29/2025 |
Deficient Monitoring |
Both INF-001 and EFF-001 BODs were not set up within the required 48hr hold time by Alpha Labs. |
Violation |
N |
eSMR |
Sonoma Valley County SD WWTP |
459395 |
R2-2024-0027 |
N |
| 1148755 |
09/22/2025 |
CTOX |
Chronic Toxicity-C.dubia-Reproduction Other and reported value was 25.3 % effect at EFF-001. |
Violation |
N |
eSMR |
Sonoma Valley County SD WWTP |
459395 |
R2-2024-0027 |
N |
| 1147624 |
08/04/2025 |
CTOX |
Chronic Toxicity Maximum Daily (MDEL) limit is 50 % effect and reported value was 86.1 % effect at EFF-001. |
Violation |
N |
eSMR |
Sonoma Valley County SD WWTP |
459395 |
R2-2024-0027 |
N |
| 1147623 |
08/04/2025 |
CTOX |
Chronic Toxicity Maximum Daily (MDEL) limit is 0 Pass/Fail (Pass = 0, Fail = 1) and reported value was 1 Pass/Fail (Pass = 0, Fail = 1) at EFF-001. |
Violation |
N |
eSMR |
Sonoma Valley County SD WWTP |
459395 |
R2-2024-0027 |
N |
| 1145650 |
08/04/2025 |
Sanitary Sewer Overflow/Spill/ |
Type: Category 1 Spill; Debris-wipes/Non-disposables,Debris-Rags,Fats, Oil and Grease (FOG) caused 2055 gallons of sewage to spill from Manhole at Pequeno Creek SVCSD_M72-8 to Drainage Conveyance System that discharges to surface water |
Violation |
None |
SSO |
Sonoma Valley County S.D. CS |
300361 |
2022-0103-DWQ |
N |
| 1145083 |
02/01/2023 |
Deficient Monitoring |
Mercury sample was not preserved within the method prescribed requirement of 48 hours from collection. Results should be considered estimated. |
Violation |
N |
eSMR |
SCWA Russian River CSD |
427524 |
R1-2021-0002 |
N |
| 1145082 |
02/01/2023 |
Deficient Monitoring |
Mercury sample was not preserved within the method prescribed requirement of 48 hours from collection. Results should be considered estimated. |
Violation |
N |
eSMR |
SCWA Russian River CSD |
427524 |
R1-2021-0002 |
N |
| 1142977 |
02/07/2024 |
Deficient Monitoring |
The BOD sample batch set for February 7th was missing the GGA QC results. |
Violation |
N |
eSMR |
SCWA Russian River CSD |
427524 |
R1-2021-0002 |
N |
| 1142976 |
02/07/2024 |
Deficient Monitoring |
The BOD sample batch set for February 7th was missing the GGA QC results. |
Violation |
N |
eSMR |
SCWA Russian River CSD |
427524 |
R1-2021-0002 |
N |
| 1142974 |
04/17/2024 |
Deficient Monitoring |
BOD QA/QC criteria not met. GGA Reference sample low and out of compliance. Acceptance Range 167.5-238.5 mg/L. |
Violation |
N |
eSMR |
SCWA Russian River CSD |
427524 |
R1-2021-0002 |
N |
| 1142973 |
04/17/2024 |
Deficient Monitoring |
BOD QA/QC criteria not met. GGA Reference sample low and out of compliance. Acceptance Range 167.5-238.5 mg/L. |
Violation |
N |
eSMR |
SCWA Russian River CSD |
427524 |
R1-2021-0002 |
N |
| 1142972 |
04/24/2024 |
Deficient Monitoring |
BOD QA/QC criteria not met. GGA Reference sample low and out of compliance. Acceptance Range 167.5-238.5 mg/L. |
Violation |
N |
eSMR |
SCWA Russian River CSD |
427524 |
R1-2021-0002 |
N |
| 1142971 |
04/24/2024 |
Deficient Monitoring |
BOD QA/QC criteria not met. GGA Reference sample low and out of compliance. Acceptance Range 167.5-238.5 mg/L. |
Violation |
N |
eSMR |
SCWA Russian River CSD |
427524 |
R1-2021-0002 |
N |
| 1142969 |
05/01/2024 |
Deficient Monitoring |
BOD QA/QC criteria not met. GGA Reference sample low and out of compliance. Acceptance Range 167.5-238.5 mg/L. |
Violation |
N |
eSMR |
SCWA Russian River CSD |
427524 |
R1-2021-0002 |
N |
| 1142968 |
05/01/2024 |
Deficient Monitoring |
BOD QA/QC criteria not met. GGA Reference sample low and out of compliance. Acceptance Range 167.5-238.5 mg/L. |
Violation |
N |
eSMR |
SCWA Russian River CSD |
427524 |
R1-2021-0002 |
N |
| 1142967 |
05/14/2024 |
Deficient Monitoring |
BOD QA/QC criteria not met. GGA Reference sample low and out of compliance. Acceptance Range 167.5-238.5 mg/L. |
Violation |
N |
eSMR |
SCWA Russian River CSD |
427524 |
R1-2021-0002 |
N |
| 1142966 |
05/14/2024 |
Deficient Monitoring |
BOD QA/QC criteria not met. GGA Reference sample low and out of compliance. Acceptance Range 167.5-238.5 mg/L. |
Violation |
N |
eSMR |
SCWA Russian River CSD |
427524 |
R1-2021-0002 |
N |
| 1142964 |
06/19/2024 |
Deficient Monitoring |
Upon analysis review, there was deviation from the method as the pH and temperature of the samples were not recorded prior to analysis. |
Violation |
N |
eSMR |
SCWA Russian River CSD |
427524 |
R1-2021-0002 |
N |
| 1142963 |
06/19/2024 |
Deficient Monitoring |
Upon analysis review, there was deviation from the method as the pH and temperature of the samples were not recorded prior to analysis. |
Violation |
N |
eSMR |
SCWA Russian River CSD |
427524 |
R1-2021-0002 |
N |
| 1142961 |
07/03/2024 |
Deficient Monitoring |
QA/QC criteria not met. GGA Reference sample low and out of compliance. Acceptance Range 167.5-238.5 mg/L. |
Violation |
N |
eSMR |
SCWA Russian River CSD |
427524 |
R1-2021-0002 |
N |
| 1142960 |
07/03/2024 |
Deficient Monitoring |
QA/QC criteria not met. GGA Reference sample low and out of compliance. Acceptance Range 167.5-238.5 mg/L. |
Violation |
N |
eSMR |
SCWA Russian River CSD |
427524 |
R1-2021-0002 |
N |
| 1140122 |
02/04/2025 |
Sanitary Sewer Overflow/Spill/ |
Type: Category 1 Spill; Debris-Rags caused 128 gallons of sewage to spill from Lateral Clean Out (Private) at 445 MOLL CT to Street/Curb and Gutter (2 3) |
Violation |
None |
SSO |
Sonoma Valley County S.D. CS |
300361 |
2022-0103-DWQ |
N |
| 1140121 |
02/04/2025 |
Sanitary Sewer Overflow/Spill/ |
Type: Category 1 Spill; Flow Exceeded Capacity (Separate Collection System Only) caused 27353 gallons of sewage to spill from Manhole at SVCSD_M60-13 VAILETTI DR to Street/Curb and Gutter (2 3) |
Violation |
None |
SSO |
Sonoma Valley County S.D. CS |
300361 |
2022-0103-DWQ |
N |
| 1140120 |
02/04/2025 |
Sanitary Sewer Overflow/Spill/ |
Type: Category 1 Spill; Flow Exceeded Capacity (Separate Collection System Only) caused 4760 gallons of sewage to spill from Lateral Clean Out (Private) at 15561 BROOKVIEW DR to Street/Curb and Gutter (2 3) |
Violation |
None |
SSO |
Sonoma Valley County S.D. CS |
300361 |
2022-0103-DWQ |
N |
| 1137005 |
11/23/2024 |
Sanitary Sewer Overflow/Spill/ |
Type: Category 1 Spill; Flow Exceeded Capacity (Separate Collection System Only) caused 3565 gallons of sewage to spill from Manhole at RRCSD_M17-23 to Surface Water |
Violation |
None |
SSO |
SCWA Russian River CSD CS |
300283 |
2022-0103-DWQ |
N |
| 1133137 |
02/06/2024 |
Sanitary Sewer Overflow/Spill/ |
Type: Category 1 Spill; Damage by Others Not Related to Collection System Construction/Maintenance caused 7026 gallons of sewage to spill from Force Main at Minna St to Drainage Conveyance System that discharges to surface water |
Violation |
None |
SSO |
SCWA Occidental CSD CS |
300111 |
2022-0103-DWQ |
N |
| 1131317 |
07/10/2024 |
Deficient Monitoring |
QA/QC criteria not met. GGA Reference sample low and out of compliance. Acceptance Range 167.5-238.5 mg/L. |
Violation |
N |
eSMR |
SCWA Russian River CSD |
427524 |
R1-2021-0002 |
N |
| 1131316 |
07/10/2024 |
Deficient Monitoring |
QA/QC criteria not met. GGA Reference sample low and out of compliance. Acceptance Range 167.5-238.5 mg/L. |
Violation |
N |
eSMR |
SCWA Russian River CSD |
427524 |
R1-2021-0002 |
N |
| 1126183 |
03/01/2024 |
Unauthorized Discharge |
The unauthorized discharge of approximately 276,078 gallons of undisinfected secondary treated wastewater to a drainage ditch which flowed to the Russian River. |
Violation |
None |
Complaint |
SCWA Russian River CSD |
427524 |
R1-2021-0002 |
N |
| 1126050 |
03/01/2024 |
Order Conditions |
During the late evening of Friday, March 1, 2024 and into the early morning of Saturday, March 2, 2024, the District's treatment plant experienced an unauthorized discharge with an estimated volume of up to 276,078 gallons of secondary treated wastewater. Time Occurred: 02/01/2024 10:57 to 02/02/2024 04:20. |
Violation |
N |
eSMR |
SCWA Russian River CSD |
427524 |
R1-2021-0002 |
N |
| 1121938 |
11/17/2023 |
Order Conditions |
On October 17 at 16:00 hours and continuing through October 18 at 06:00 hours there was a communications failure for our secondary effluent turbidity readings. All other compliance data was captured and there were no fluctuations in flow patterns outside of the normal diurnal flows. The final effluent turbidity during this same timeframe was well within the required turbidity range with an average turbidity of 0.45 NTU's and a daily maximum of 0.85 NTU's. Given these factors we believe that the secondary effluent turbidity remained in compliance. |
Violation |
N |
eSMR |
SCWA Russian River CSD |
427524 |
R1-2021-0002 |
N |
| 1114509 |
01/31/2023 |
Late Report |
Annual Report due January 30th received 2/03/23, 4 days late. |
Violation |
N |
Report |
SCWA Oceanic Properties Sea Ranch Central Plant |
138699 |
96-011 |
N |
| 1112570 |
12/10/2022 |
Order Conditions |
Turbidity Other limit is 10 NTU and reported value was 12.529 NTU at INT-001A. |
Violation |
N |
eSMR |
SCWA Russian River CSD |
427524 |
R1-2021-0002 |
N |
| 1112476 |
12/31/2022 |
OEV |
Enterococci Monthly 90th% limit is 110.0 CFU/100 mL and reported value was 784.23 CFU/100 mL at EFF-002. |
Violation |
N |
eSMR |
Sonoma Valley County SD WWTP |
432957 |
R2-2019-0019 |
N |
| 1111580 |
11/03/2022 |
Deficient Monitoring |
No sample for Total Hardness was collected at the Russian River Upstream location RSW-001 for November. Upstream Hardness is a monthly requirement during discharge season while Effluent Hardness location EFF-002 is a grab once per discharge season requirement causing the confusion. |
Violation |
N |
eSMR |
SCWA Russian River CSD |
427524 |
R1-2021-0002 |
N |
| 1109566 |
09/12/2022 |
Deficient Monitoring |
Samples for BOD & TSS were sent to contract lab for analysis for 09/12, 09/13, & 9/14. Alpha Labs only logged in the BOD's and not the TSS's. All three samples for TSS were run past hold time. |
Violation |
N |
eSMR |
Sonoma Valley County SD WWTP |
432957 |
R2-2019-0019 |
N |
| 1109565 |
09/12/2022 |
Deficient Monitoring |
Samples for BOD & TSS were sent to contract lab for analysis for 09/12, 09/13, & 9/14. Alpha Labs only logged in the BOD's and not the TSS's. All three samples for TSS were run past hold time. |
Violation |
N |
eSMR |
Sonoma Valley County SD WWTP |
432957 |
R2-2019-0019 |
N |
| 1108535 |
08/09/2022 |
Deficient Monitoring |
The well was dry and monitoring could not occur in August as the permit requires. |
Violation |
N |
eSMR |
SCWA Russian River CSD |
427524 |
R1-2021-0002 |
N |
| 1107034 |
07/18/2022 |
CAT1 |
Total Suspended Solids (TSS) 30-Day Average limit is 30 mg/L and reported value was 36 mg/L. |
Violation |
N |
Report |
SCWA Oceanic Properties Sea Ranch Central Plant |
138699 |
96-011 |
N |
| 1102226 |
03/02/2022 |
Late Report |
Annual SMR ( SUMRPT ) (Annual Summary Report) report for 2021 (2577311) was due on 01-MAR-22 |
Violation |
None |
Report |
SCWA Russian River CSD |
392149 |
R1-2014-0002 |
N |
| 1102117 |
03/02/2022 |
Late Report |
Annual SMR ( SUMRPT ) (Annual Summary Report) report for 2021 (2415980) was due on 01-MAR-22 |
Violation |
None |
Report |
SCWA Russian River CSD |
392149 |
R1-2014-0002 |
N |
| 1099499 |
12/07/2021 |
Deficient Monitoring |
The TDS sample for the upstream receiving waters (RSW-001) was not collected in December. There was some confusion in treading the new permit and TDS was mistakenly thought to be semi-annual not monthly. |
Violation |
N |
eSMR |
SCWA Russian River CSD |
427524 |
R1-2021-0002 |
N |
| 1095955 |
09/13/2021 |
Deficient Monitoring |
For Chronic Toxicity: C. dubia - Three-Sample Median Trigger Maximum limit is 1 TUc and reported value was 4.6 TUc at EFF-001 |
Violation |
N |
eSMR |
Sonoma Valley County SD WWTP |
432957 |
R2-2019-0019 |
N |
| 1095954 |
09/30/2021 |
CAT2 |
Zinc, Total Monthly Average limit is 58 ug/L and reported value was 59.3 ug/L at EFF-001. |
Violation |
N |
eSMR |
Sonoma Valley County SD WWTP |
432957 |
R2-2019-0019 |
N |
| 1095872 |
09/30/2021 |
CAT1 |
Sodium, Total Monthly Average limit is 60 mg/L and reported value was 63.5 mg/L at REC-001. |
Violation |
N |
eSMR |
SCWA Russian River CSD |
427524 |
R1-2021-0002 |
N |
| 1095871 |
09/30/2021 |
CAT1 |
Sodium, Total Monthly Average limit is 60 mg/L and reported value was 63.5 mg/L at LND-001. |
Violation |
N |
eSMR |
SCWA Russian River CSD |
427524 |
R1-2021-0002 |
N |
| 1095592 |
09/08/2021 |
CAT1 |
Total Suspended Solids (TSS) Monthly Average limit is 30 mg/L and reported value was 37 mg/L. |
Violation |
N |
Report |
SCWA Oceanic Properties Sea Ranch Central Plant |
138699 |
96-011 |
N |
| 1094436 |
08/03/2021 |
Deficient Monitoring |
For Chronic Toxicity: C.dubia - (Reproduction) Single Sample Trigger Maximum limit is 2 TUc and reported value was 4.6 TUc at EFF-001. C.dubia - Three-Sample Trigger Maximum limit is 1 TUc and reported value was 4.6 TUc at EFF-001 |
Violation |
N |
eSMR |
Sonoma Valley County SD WWTP |
432957 |
R2-2019-0019 |
N |
| 1093623 |
07/12/2021 |
Deficient Monitoring |
Chronic Toxicity - C.dubia - Reproduction Single Sample Trigger Maximum limit is 2 TUc and reported value was 10.3 TUc at EFF-001. Chronic Toxicity - C.dubia -Survival for the same sample was < 1 TUc. |
Violation |
N |
eSMR |
Sonoma Valley County SD WWTP |
432957 |
R2-2019-0019 |
N |
| 1092328 |
06/09/2021 |
Deficient Monitoring |
On June 9, 2021 at 01:07, the Post CL2 residual at the Sonoma Valley Treatment Plant dropped suddenly causing the plant to divert tertiary final effluent into EQ #3. During this time the Monthly Flow-Through Bioassay was in progress. The plant diverted into EQ #3 until 05:02 for a total of approximately 4 hours. During this time there was no flow to the bioassay unit. When the Operator arrived at the plant it was discovered the probe on the CL2 analyzer was fouled with debris. After cleaning the probe and re-calibrating the analyzers, discharge of tertiary final effluent was resumed to the R4 reservoir and flow to the bioassay unit was resumed. |
Violation |
N |
eSMR |
Sonoma Valley County SD WWTP |
432957 |
R2-2019-0019 |
N |
| 1090162 |
04/30/2021 |
CAT1 |
Total Suspended Solids (TSS) Monthly Average limit is 30 mg/L and reported value was 38 mg/L. |
Violation |
N |
Report |
SCWA Oceanic Properties Sea Ranch Central Plant |
138699 |
96-011 |
N |
| 1085807 |
12/09/2020 |
OEV |
Total Coliform Daily Maximum limit is 230 MPN/100 mL and reported value was 1600 MPN/100 mL. |
Violation |
N |
Report |
SCWA Geyserville CSD |
433463 |
R1-2019-0013 |
N |
| 1083883 |
11/30/2020 |
OEV |
Total Coliform 30-Day Average limit is 23 MPN/100 mL and reported value was 49 MPN/100 mL. |
Violation |
N |
Report |
SCWA Oceanic Properties Sea Ranch Central Plant |
138699 |
96-011 |
N |
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