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. |
1141491 |
02/04/2025 |
OEV |
Turbidity Daily Average (Mean) limit is 2.0 NTU and reported value was 2.04 NTU at FIL-001. |
Violation |
N |
eSMR |
Nevada City WWTP |
448476 |
R5-2022-0039 |
N |
1141490 |
02/06/2025 |
OEV |
Turbidity Daily Average (Mean) limit is 2.0 NTU and reported value was 2.20 NTU at FIL-001. |
Violation |
N |
eSMR |
Nevada City WWTP |
448476 |
R5-2022-0039 |
N |
1134900 |
09/09/2024 |
CTOX |
Chronic Toxicity-C.dubia-Reproduction Other limit is 1 TUc and reported value was 1.3 TUc at EFF-001. |
Violation |
N |
eSMR |
Nevada City WWTP |
448476 |
R5-2022-0039 |
N |
1132854 |
05/14/2024 |
Order Conditions |
The Discharger attributed the increased turbidity to high levels of fats, oil, and grease (FOG) in the Facility influent which affected flocculation and settling. The Discharger notified collection system staff of the FOG issue. |
Violation |
N |
Report |
Nevada City WWTP |
448476 |
R5-2022-0039 |
N |
1132833 |
07/31/2024 |
CAT1 |
Ammonia, Total (as N) Monthly Average (Mean) limit is 2.0 mg/L and reported value was 5.1 mg/L at EFF-001. |
Violation |
N |
Report |
Nevada City WWTP |
448476 |
R5-2022-0039 |
N |
1131491 |
07/13/2024 |
CAT1 |
Ammonia, Total (as N) Weekly Average limit is 6.7 mg/L and reported value was 13.6 mg/L at EFF-001. |
Violation |
N |
eSMR |
Nevada City WWTP |
448476 |
R5-2022-0039 |
N |
1131490 |
07/15/2024 |
Order Conditions |
Turbidity Instantaneous Maximum limit is 10.0 NTU and reported value was 19 NTU at FIL-001. |
Violation |
N |
eSMR |
Nevada City WWTP |
448476 |
R5-2022-0039 |
N |
1131489 |
07/16/2024 |
Order Conditions |
Turbidity Daily Average (Mean) limit is 2.0 NTU and reported value was 7 NTU at FIL-001. |
Violation |
N |
eSMR |
Nevada City WWTP |
448476 |
R5-2022-0039 |
N |
1131488 |
07/06/2024 |
CAT1 |
Ammonia, Total (as N) Weekly Average limit is 6.7 mg/L and reported value was 10.2 mg/L at EFF-001. |
Violation |
N |
eSMR |
Nevada City WWTP |
448476 |
R5-2022-0039 |
N |
1129963 |
06/19/2024 |
OEV |
Total Coliform 7-Day Median limit is 2.2 MPN/100 mL and reported value was 4.0 MPN/100 mL at EFF-001. |
Violation |
N |
eSMR |
Nevada City WWTP |
448476 |
R5-2022-0039 |
N |
1129961 |
06/05/2024 |
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 |
1129958 |
06/06/2024 |
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 |
1129954 |
06/30/2024 |
Order Conditions |
Turbidity Instantaneous Maximum limit is 10 NTU and reported value was 14 NTU at FIL-001. |
Violation |
N |
eSMR |
Nevada City WWTP |
448476 |
R5-2022-0039 |
N |
1129953 |
06/30/2024 |
Order Conditions |
Turbidity Daily Average (Mean) limit is 2.0 NTU and reported value was 6.6 NTU at FIL-001. |
Violation |
N |
eSMR |
Nevada City WWTP |
448476 |
R5-2022-0039 |
N |
1128767 |
05/31/2024 |
CAT2 |
Dichlorobromomethane Monthly Average limit is 5.9 ug/L and reported value was 6.5 ug/L at EFF-001. |
Violation |
N |
eSMR |
Nevada City WWTP |
448476 |
R5-2022-0039 |
N |
1128063 |
04/25/2024 |
Order Conditions |
The Discharger violated the Filtration System Operating Specifications for turbidity contained in the WDRs, as shown in Table C. The Discharger reported exceedances of the maximum daily average value of 2 Nephelometric Turbidity Units (NTU) on seven days in late-April 2024. The Discharger suspects the increased turbidity was caused by the seasonal change in temperature and consequent effect on the Facility¿s biological treatment process. Turbidity was restored to levels compliant with the WDRs on 26 April 2024. |
Violation |
N |
Report |
Nevada City WWTP |
448476 |
R5-2022-0039 |
Y |
1127613 |
05/02/2024 |
Late Report |
Quarterly SMR ( MONRPT ) report for Q1 2024 (2619056) was due on 01-MAY-24 |
Violation |
None |
Report |
Nevada City WWTP |
448476 |
R5-2022-0039 |
N |
1127310 |
04/02/2024 |
CAT2 |
Dichlorobromomethane Monthly Average limit is 5.9 ug/L and reported value was 6.2 ug/L at EFF-001. |
Violation |
N |
eSMR |
Nevada City WWTP |
448476 |
R5-2022-0039 |
Y |
1126199 |
03/11/2024 |
OEV |
Total Coliform 7-Day Median limit is 2.2 MPN/100 mL and reported value was 4.0 MPN/100 mL at EFF-001. |
Violation |
N |
eSMR |
Nevada City WWTP |
448476 |
R5-2022-0039 |
Y |
1126198 |
03/13/2024 |
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 |
Y |
1126197 |
03/14/2024 |
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 |
Y |
1126196 |
03/18/2024 |
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 |
Y |
1125083 |
02/28/2024 |
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 |
1120962 |
09/21/2023 |
OEV |
Total Coliform 7-Day Median limit is 2.2 MPN/100 mL and reported value was 14 MPN/100 mL at EFF-001. |
Violation |
N |
eSMR |
Nevada City WWTP |
448476 |
R5-2022-0039 |
Y |
1120961 |
09/20/2023 |
OEV |
Total Coliform 7-Day Median limit is 2.2 MPN/100 mL and reported value was 14.0 MPN/100 mL at EFF-001. |
Violation |
N |
eSMR |
Nevada City WWTP |
448476 |
R5-2022-0039 |
Y |
1120960 |
09/25/2023 |
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 |
Y |
1119361 |
07/06/2023 |
CAT2 |
Dichlorobromomethane Daily Maximum limit is 12.0 ug/L and reported value was 13.0 ug/L at EFF-001. |
Violation |
N |
eSMR |
Nevada City WWTP |
448476 |
R5-2022-0039 |
Y |
1118650 |
06/28/2023 |
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 |
Y |
1118649 |
06/30/2023 |
CAT1 |
Ammonia, Total (as N) Monthly Average limit is 2.0 mg/L and reported value was 5.9 mg/L at EFF-001. |
Violation |
N |
eSMR |
Nevada City WWTP |
448476 |
R5-2022-0039 |
Y |
1118648 |
06/15/2023 |
CAT1 |
Ammonia, Total (as N) Weekly Average limit is 6.7 mg/L and reported value was 18.5 mg/L at EFF-001. |
Violation |
N |
eSMR |
Nevada City WWTP |
448476 |
R5-2022-0039 |
Y |
1118647 |
06/08/2023 |
CAT2 |
Dichlorobromomethane Monthly Average limit is 5.9 ug/L and reported value was 6.0 ug/L at EFF-001. |
Violation |
N |
eSMR |
Nevada City WWTP |
448476 |
R5-2022-0039 |
Y |
1118645 |
03/26/2023 |
Deficient Monitoring |
The Discharger indicated dissolved oxygen monitoring was not performed at EFF-001 during the week of 26 March 2023 because staff were focused on issues with the ongoing storm events. |
Violation |
N |
Report |
Nevada City WWTP |
448476 |
R5-2022-0039 |
Y |
1118240 |
05/22/2023 |
CAT1 |
Total Suspended Solids (TSS) Weekly Average limit is 15 mg/L and reported value was 22 mg/L at EFF-001. |
Violation |
N |
eSMR |
Nevada City WWTP |
448476 |
R5-2022-0039 |
Y |
1118239 |
05/16/2023 |
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 |
Y |
1116652 |
05/01/2023 |
Late Report |
Annual SMR ( TECHRPT ) (MRP section X.D.4) report for 2022 (2619128) was due on 30-APR-23 |
Violation |
None |
Report |
Nevada City WWTP |
448476 |
R5-2022-0039 |
N |
1115977 |
03/15/2023 |
OEV |
Total Coliform 7-Day Median limit is 2.2 MPN/100 mL and reported value was 3.25 MPN/100 mL at EFF-001. |
Violation |
N |
eSMR |
Nevada City WWTP |
448476 |
R5-2022-0039 |
Y |
1115976 |
03/13/2023 |
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 |
Y |
1114337 |
01/19/2023 |
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 |
Nevada City WWTP |
448476 |
R5-2022-0039 |
Y |
1114335 |
01/17/2023 |
OEV |
Total Coliform 7-Day Median limit is 2.2 MPN/100 mL and reported value was 13.0 MPN/100 mL at EFF-001. |
Violation |
N |
eSMR |
Nevada City WWTP |
448476 |
R5-2022-0039 |
Y |
1114334 |
01/11/2023 |
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 |
Y |
1114333 |
01/18/2023 |
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 |
Nevada City WWTP |
448476 |
R5-2022-0039 |
Y |
1113371 |
02/02/2023 |
Late Report |
Quarterly SMR ( MONRPT ) report for Q4 2022 (2619051) was due on 01-FEB-23 |
Violation |
None |
Report |
Nevada City WWTP |
448476 |
R5-2022-0039 |
N |
1111484 |
07/11/2022 |
OEV |
Total Coliform 7-Day Median limit is 2.2 MPN/100 mL and reported value was 3.2 MPN/100 mL at EFF-001. |
Violation |
N |
Report |
Nevada City WWTP |
413894 |
R5-2017-0060 |
Y |
1110829 |
08/31/2022 |
Deficient Monitoring |
The City did not have an active LRO and did not submit spills or "No Spill Certifications" to CIWQS from November 2020 to August 2022. |
Violation |
None |
Inspection |
Nevada City CS |
301530 |
2022-0103-DWQ |
N |
1110605 |
10/24/2022 |
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 |
Nevada City WWTP |
448476 |
R5-2022-0039 |
Y |
1108907 |
08/04/2022 |
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 |
Nevada City WWTP |
448476 |
R5-2022-0039 |
Y |
1107454 |
07/07/2022 |
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 |
413894 |
R5-2017-0060 |
Y |
1105752 |
12/31/2021 |
Deficient Monitoring |
The Discharger failed to conduct annual monitoring for electrical conductivity at INF-001 and SPL-001 during 2022. |
Violation |
N |
Report |
Nevada City WWTP |
413894 |
R5-2017-0060 |
Y |
1105751 |
03/27/2022 |
Deficient Monitoring |
The Discharger failed to conduct weekly monitoring for all parameters in the receiving water during the week of 3/27/2022. |
Violation |
N |
Report |
Nevada City WWTP |
413894 |
R5-2017-0060 |
Y |
1105750 |
04/13/2022 |
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 |
Report |
Nevada City WWTP |
413894 |
R5-2017-0060 |
Y |
1105749 |
04/06/2022 |
OEV |
Total Coliform 7-Day Median limit is 2.2 MPN/100 mL and reported value was 13 MPN/100 mL at EFF-001. |
Violation |
N |
Report |
Nevada City WWTP |
413894 |
R5-2017-0060 |
Y |
1105718 |
02/10/2022 |
OEV |
Total Coliform 7-Day Median limit is 2.0 MPN/100 mL and reported value was 4.0 MPN/100 mL at EFF-001. |
Violation |
N |
eSMR |
Nevada City WWTP |
413894 |
R5-2017-0060 |
Y |
1104396 |
04/11/2022 |
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 |
413894 |
R5-2017-0060 |
Y |
1104395 |
04/07/2022 |
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 |
413894 |
R5-2017-0060 |
Y |
1102728 |
02/09/2022 |
OEV |
Total Coliform 7-Day Median limit is 2.2 MPN/100 mL and reported value was 4 MPN/100 mL at EFF-001. |
Violation |
N |
eSMR |
Nevada City WWTP |
413894 |
R5-2017-0060 |
Y |
1100903 |
01/03/2022 |
OEV |
Total Coliform 7-Day Median limit is 2.2 MPN/100 mL and reported value was 4.0 MPN/100 mL at EFF-001. |
Violation |
N |
eSMR |
Nevada City WWTP |
413894 |
R5-2017-0060 |
Y |
1097298 |
10/25/2021 |
OEV |
pH Instantaneous Minimum limit is 6.5 SU and reported value was 6.3 SU at EFF-001. |
Violation |
N |
eSMR |
Nevada City WWTP |
413894 |
R5-2017-0060 |
Y |
1097296 |
10/24/2021 |
Order Conditions |
Turbidity Daily Average (Mean) limit is 2.0 NTU and reported value was 3.1 NTU at FIL-001. |
Violation |
N |
eSMR |
Nevada City WWTP |
413894 |
R5-2017-0060 |
Y |
1097295 |
10/26/2021 |
OEV |
pH Instantaneous Minimum limit is 6.5 SU and reported value was 6.3 SU at EFF-001. |
Violation |
N |
eSMR |
Nevada City WWTP |
413894 |
R5-2017-0060 |
Y |
1089832 |
12/31/2020 |
CAT1 |
Ammonia, Total (as N) Monthly Average limit is 11 lb/day and reported value was 15 lb/day at EFF-001. |
Violation |
N |
Report |
Nevada City WWTP |
413894 |
R5-2017-0060 |
Y |
1089831 |
12/31/2020 |
CAT1 |
Ammonia, Total (as N) Monthly Average limit is 1.9 mg/L and reported value was 3.2 mg/L at EFF-001. |
Violation |
N |
Report |
Nevada City WWTP |
413894 |
R5-2017-0060 |
Y |
1089830 |
12/12/2020 |
CAT1 |
Ammonia, Total (as N) Weekly Average limit is 24 lb/day and reported value was 29 lb/day at EFF-001. |
Violation |
N |
Report |
Nevada City WWTP |
413894 |
R5-2017-0060 |
Y |
1086052 |
12/12/2020 |
CAT1 |
Ammonia, Total (as N) Weekly Average limit is 4.2 mg/L and reported value was 10 mg/L at EFF-001. |
Violation |
N |
eSMR |
Nevada City WWTP |
413894 |
R5-2017-0060 |
Y |
1082634 |
11/30/2020 |
CAT2 |
Dibromochloromethane Monthly Average (Mean) limit is 4.3 ug/L and reported value was 4.8 ug/L at EFF-001. |
Violation |
N |
eSMR |
Nevada City WWTP |
413894 |
R5-2017-0060 |
Y |
1081251 |
10/31/2020 |
CAT2 |
Dichlorobromomethane Monthly Average (Mean) limit is 4.3 ug/L and reported value was 4.5 ug/L at EFF-001. |
Violation |
N |
eSMR |
Nevada City WWTP |
413894 |
R5-2017-0060 |
Y |
1080677 |
08/09/2020 |
Deficient Monitoring |
Discharger failed to conduct weekly receiving water monitoring for DO, pH, temperature, and turbidity during the week of 8 August 2020. |
Violation |
N |
Report |
Nevada City WWTP |
413894 |
R5-2017-0060 |
Y |
1079668 |
08/03/2020 |
CAT2 |
Dibromochloromethane Monthly Average limit is 4.3 ug/L and reported value was 7.1 ug/L at EFF-001. |
Violation |
N |
eSMR |
Nevada City WWTP |
413894 |
R5-2017-0060 |
Y |
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