| 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. |
| 1148905 |
07/14/2025 |
Deficient Monitoring |
No coliform sample was collected on July 14th 2025 while production of Recycled Water was taking place. The cause of the sampling deficiency is not readily apparent and was most likely due to a failure to collect the sample. |
Violation |
N |
eSMR |
Ukiah City WWTP |
458153 |
R1-2024-0016 |
N |
| 1145334 |
06/02/2025 |
OEV |
Total Coliform Not to exceed a specific limit more than once within any 30-day period. limit is 23 MPN/100 mL and reported value was 45.7 MPN/100 mL at REC-001. *** MMP Exempt Reason:No discharge to surface waters. |
Violation |
N |
eSMR |
Ukiah City WWTP |
458153 |
R1-2024-0016 |
N |
| 1145333 |
04/16/2025 |
OEV |
Total Coliform Weekly Average limit is 23 MPN/100 mL and reported value was 33 MPN/100 mL at EFF-002. *** MMP Exempt Reason:No discharge to surface waters. |
Violation |
N |
eSMR |
Ukiah City WWTP |
458153 |
R1-2024-0016 |
N |
| 1145332 |
07/23/2025 |
Deficient Monitoring |
The April monthly sample for EFF-002 Specific Conductance was collected by an operator who was in the process of training and the measured value for Specific Conductance that was analyzed on 4/23/25 had a result of 0.5 µS/cm. This value is not possible for wastewater and is more likely a reading of the air. The probe used for Specific Conductance is a multi-parameter probe that has pH and temperature at the tip, with a side port higher up on the probe body for Specific Conductance. It is believed that the operator did not realize that the specific conductance sensor was higher up on the probe and only inserted the pH and temperature sensors into the sample. The problem was not discovered until after the end of April. |
Violation |
N |
eSMR |
Ukiah City WWTP |
458153 |
R1-2024-0016 |
N |
| 1145331 |
07/01/2025 |
OEV |
Total Coliform Daily Maximum limit is 240 MPN/100 mL and reported value was 290.9 MPN/100 mL at REC-001. *** MMP Exempt Reason:Recycled Water Violation |
Violation |
N |
eSMR |
Ukiah City WWTP |
458153 |
R1-2024-0016 |
N |
| 1144004 |
06/02/2025 |
Late Report |
Once Only OneTime ( TECHRPT ) (TRE Work Plan Review Notification) report for 2024/10/01 (2891710) was due on 01-JUN-25 |
Violation |
None |
Report |
Ukiah City WWTP |
458153 |
R1-2024-0016 |
N |
| 1142425 |
02/15/2025 |
Deficient Monitoring |
During the week of 2/15/25 a sample was submitted to the contract laboratory for Total Coliform analysis. The Chain of Custody was correctly filled out requesting Total Coliform analysis, however the contract laboratory incorrectly logged the sample into their custody and assigned the sample for Fecal Coliform instead of Total Coliform. Due to this mistake, there is not a Total Coliform result for that week, and there is only a Fecal Coliform result. |
Violation |
N |
eSMR |
Ukiah City WWTP |
458153 |
R1-2024-0016 |
N |
| 1142424 |
02/08/2025 |
OEV |
Total Coliform 7-Day Median limit is 23 MPN/100 mL and reported value was 130 MPN/100 mL at EFF-002. |
Violation |
N |
eSMR |
Ukiah City WWTP |
458153 |
R1-2024-0016 |
N |
|
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