| Violation ID |
Occurred Date |
Violation Type |
(-) Violation Description |
Corrective Action |
Status |
Classification |
Source |
| 1154852 |
04/27/2026 |
OEV |
E.coli Daily Maximum limit is 400 MPN/100 mL and reported value was 2000 MPN/100 mL at EFF-003. |
Upon notification of the result, Operators thoroughly cleaned and flushed the sample port. Concurrently, an investigation was conducted to identify any operational abnormalities. No abnormalities were identified and to date, no additional exceedances for E. coli have occurred. |
Violation |
U |
eSMR |
| 1153650 |
03/03/2026 |
DMON |
The March 4,4¿-DDT sample was split and analyzed by two different laboratories, Physis Environmental Inc. and WECK Laboratories Inc. CVWD was notified via E-Mail on February 28, 2026, by Physis Environmental that their ELAP certification had lapsed and that Physis Environmental is currently working to reobtain their ELAP certification. To ensure a sample for 4,4¿-DDT was analyzed by an ELAP certified laboratory, a portion of the March sample was sent to WECK Laboratories for analysis. WECK Laboratories lowest reporting limit for 4,4¿-DDT is 5 ng/L. Both results for 4,4¿-DDT were none-detected (ND) at both reporting limits. To date, Physis Environmental has been the only laboratory identified by CVWD that has been able to meet the reporting limit of 0.59 nanograms per liter (ng/L) requirement. Until Physis Environmental is able to reobtain their ELAP certification, CVWD will continue to send the monthly 4,4¿-DDT sample to WECK Laboratories for analysis. |
CVWD will continue with the process of finding another laboratory that can meet the reporting limit for future samples. Until another laboratory can be identified, CVWD will continue to send the monthly 4,4'-DDT sample to WECK Laboratories for analysis. |
Violation |
U |
eSMR |
| 1148909 |
08/31/2025 |
CTOX |
Chronic Toxicity Monthly Median limit is 0 Pass/Fail (Pass = 0, Fail = 1) and reported value was 1 Pass/Fail (Pass = 0, Fail = 1) at EFF-003. |
CVWD is currently in the process of determining/identifying the cause(s) of toxicity at Mid-Valley Wastewater Reclamation Plant no. 4. |
Violation |
U |
eSMR |
| 1148910 |
08/18/2025 |
CTOX |
Chronic Toxicity Daily Maximum limit is 50 % effect and reported value was 69 % effect at EFF-003. |
CVWD is currently in the process of determining/identifying the cause(s) of toxicity at Mid-Valley Wastewater Reclamation Plant No. 4. |
Violation |
U |
eSMR |
| 1146555 |
07/31/2025 |
CAT1 |
Total Suspended Solids (TSS) 30-Day Average limit is 45 mg/L and reported value was 60 mg/L at EFF-001. |
Improved communications among the laboratory staff, compliance staff and operations staff. The Facility's effluent limitations were reiterated to Laboratory staff and a communication procedure for results was also improved. Effluent composite samplers tubing and strainer lengths were reviewed and adjusted accordingly. Adjustments to the sampling schedule have also been made to ensure timely notification of results are obtained within the monitoring period. |
Violation |
U |
eSMR |
| 1146558 |
07/23/2025 |
CAT1 |
Total Suspended Solids (TSS) 7-Day Average (Mean) limit is 65 mg/L and reported value was 66 mg/L at EFF-001. |
Improved communications among the laboratory staff, compliance staff and operations staff. The Facility's effluent limitations were reiterated to Laboratory staff and a communication procedure for results was also improved. Effluent composite samplers tubing and strainer lengths were reviewed and adjusted accordingly. Adjustments to the sampling schedule have also been made to ensure timely notification of results are obtained within the monitoring period. |
Violation |
U |
eSMR |
| 1146557 |
07/17/2025 |
CAT1 |
Total Suspended Solids (TSS) 7-Day Average (Mean) limit is 65 mg/L and reported value was 66 mg/L at EFF-001. |
Improved communications among the laboratory staff, compliance staff and operations staff. The Facility's effluent limitations were reiterated to Laboratory staff and a communication procedure for results was also improved. Effluent composite samplers tubing and strainer lengths were reviewed and adjusted accordingly. Adjustments to the sampling schedule have also been made to ensure timely notification of results are obtained within the monitoring period. |
Violation |
U |
eSMR |
| 1146556 |
07/10/2025 |
OEV |
Salinity 7-Day Average (Mean) limit is 65.0 mg/L and reported value was 67.0 mg/L at EFF-001. |
Improved communications among the laboratory staff, compliance staff and operations staff. The Facility's effluent limitations were reiterated to Laboratory staff and a communication procedure for results was also improved. Effluent composite samplers tubing and strainer lengths were reviewed and adjusted accordingly. Adjustments to the sampling schedule have also been made to ensure timely notification of results are obtained within the monitoring period. |
Violation |
B |
eSMR |
| 1130090 |
06/30/2024 |
CTOX |
Chronic Toxicity Monthly Median limit is 25 % effect and reported value was 34 % effect at EFF-003. |
CVWD is investigating to determine/identify the source(s) of toxicity at WRP 4. |
Violation |
U |
eSMR |
| 1123627 |
12/31/2023 |
CTOX |
Chronic Toxicity-Green Alga-Growth Monthly Median limit is 0 % effect and reported value was 31 % effect at EFF-003. |
Operational changes have occurred to address the elevated ammonia levels, which have resulted in a significant decrease in the ammonia levels in the effluent since the samples have been collected. |
Violation |
U |
eSMR |
| 1123626 |
12/12/2023 |
CTOX |
Chronic Toxicity-Green Alga-Growth Daily Maximum limit is 50 % effect and reported value was 84 % effect at EFF-003. |
Operational changes have occurred to address the elevated ammonia levels, which have resulted in a significant decrease in the ammonia levels in the effluent. |
Violation |
U |
eSMR |
| 1118203 |
05/11/2023 |
CAT1 |
Total Suspended Solids (TSS) 7-Day Average (Mean) limit is 65 mg/L and reported value was 71 mg/L at EFF-001. |
The sampling port and sampling equipment have been examined to ensure proper placement of the sampling hose in the effluent stream and that sampling equipment is functioning properly. |
Violation |
U |
eSMR |
| 1094713 |
08/18/2021 |
OEV |
E.coli Daily Maximum limit is 400 MPN/100 mL and reported value was 1600 MPN/100 mL at EFF-003. |
Upon notification of the August 18, 2021, E. coli result, disinfectant chlorine levels were increased and the sample port was thoroughly cleaned and flushed. An investigation was conducted to identify any operational abnormalities. None were identified and no further exceedances for E. coli have occurred to date. |
Violation |
U |
eSMR |
|
Report displays most recent five years of violations. Refer to the Interactive Violation Report for more data.
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