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. |
1145453 |
05/05/2025 |
OEV |
Discharge Volume Daily Discharge limit is 0.342 million gallons and reported value was 0.368 million gallons at EFF-002. |
Violation |
N |
eSMR |
Forestville Water District |
456503 |
R1-2024-0004 |
N |
1145454 |
06/08/2025 |
Order Conditions |
Turbidity Instantaneous Maximum limit is 0.5 NTU and reported value was 0.58 NTU at INT-001B. |
Violation |
N |
eSMR |
Forestville Water District |
456503 |
R1-2024-0004 |
N |
1142233 |
01/02/2025 |
CAT2 |
Dichlorobromomethane Monthly Maximum limit is 00.56 ug/L and reported value was 0.612 ug/L at EFF-001. |
Violation |
N |
eSMR |
Rio Dell City WWTF |
454754 |
R1-2023-0022 |
N |
1139072 |
11/30/2024 |
CAT1 |
BOD5 @ 20 Deg. C, Percent Removal 1-Hour Average (Mean) limit is 0 % and reported value was 0 % at EFF-003. |
Violation |
N |
eSMR |
Rio Dell City WWTF |
454754 |
R1-2023-0022 |
N |
1144613 |
05/31/2025 |
OEV |
Total Coliform Monthly Average limit is 23 MPN/100 mL and reported value was 805 MPN/100 mL at M-012(B). |
Violation |
N |
eSMR |
Scotia Town - City |
386850 |
R1-2012-0065 |
N |
1139073 |
11/30/2024 |
CAT1 |
Total Suspended Solids (TSS) 1-Hour Average (Mean) limit is 0 % and reported value was 0 % at EFF-003. |
Violation |
N |
eSMR |
Rio Dell City WWTF |
454754 |
R1-2023-0022 |
N |
1145031 |
06/03/2025 |
Order Conditions |
Effluent sample taken at monitoring location REC-001 exceeded the TDS limit of 500mg/L, result was 610mg/L. |
Violation |
N |
eSMR |
Graton CSD |
408066 |
R1-2018-0001 |
N |
1142217 |
02/16/2025 |
Deficient Monitoring |
Unable to collect the weekly pH and temperature samples at monitoring location RSW-001 and RSW-002 due to hazardous creek conditions. |
Violation |
N |
eSMR |
Graton CSD |
408066 |
R1-2018-0001 |
N |
1144612 |
05/13/2025 |
OEV |
Total Coliform Daily Average (Mean) limit is 230 MPN/100 mL and reported value was 1600 MPN/100 mL at M-012(B). |
Violation |
N |
eSMR |
Scotia Town - City |
386850 |
R1-2012-0065 |
N |
1147788 |
08/14/2025 |
OEV |
Total Coliform Single Sample Maximum limit is 230 MPN/100 mL and reported value was 1600 MPN/100 mL at M-012(A). |
Violation |
N |
eSMR |
Scotia Town - City |
386850 |
R1-2012-0065 |
N |
1145030 |
05/15/2025 |
Order Conditions |
Effluent sample taken at monitoring location REC-001 exceeded the TDS limit of 500mg/L, result was 560mg/L. |
Violation |
N |
eSMR |
Graton CSD |
408066 |
R1-2018-0001 |
N |
1144611 |
05/06/2025 |
OEV |
Total Coliform Daily Average (Mean) limit is 230 MPN/100 mL and reported value was 1600 MPN/100 mL at M-012(B). |
Violation |
N |
eSMR |
Scotia Town - City |
386850 |
R1-2012-0065 |
N |
1136672 |
11/20/2024 |
Sanitary Sewer Overflow/Spill/ |
Type: Category 1 Spill; Rainfall Exceeded Design, I and I (Separate Collection System Only) caused 39600 gallons of sewage to spill from Manhole at End of Painter Street Manhole to Surface Water |
Violation |
None |
SSO |
Rio Dell City CS |
300093 |
2022-0103-DWQ |
N |
1138199 |
12/13/2024 |
Sanitary Sewer Overflow/Spill/ |
Type: Category 1 Spill; Rainfall Exceeded Design, I and I (Separate Collection System Only) caused 4900 gallons of sewage to spill from Manhole at End of Painter Street Manhole to Surface Water |
Violation |
None |
SSO |
Rio Dell City CS |
300093 |
2022-0103-DWQ |
N |
1136854 |
11/21/2024 |
Sanitary Sewer Overflow/Spill/ |
Type: Category 1 Spill; Rainfall Exceeded Design, I and I (Separate Collection System Only) caused 16500 gallons of sewage to spill from Manhole at End of Painter Street Manhole to Surface Water |
Violation |
None |
SSO |
Rio Dell City CS |
300093 |
2022-0103-DWQ |
N |
1139787 |
02/03/2025 |
Sanitary Sewer Overflow/Spill/ |
Type: Category 1 Spill; Flow Exceeded Capacity (Separate Collection System Only),Rainfall Exceeded Design, I and I (Separate Collection System Only) caused 110466 gallons of sewage to spill from Manhole at End of Painter Street Manhole to Surface Water |
Violation |
None |
SSO |
Rio Dell City CS |
300093 |
2022-0103-DWQ |
N |
1136904 |
11/21/2024 |
Sanitary Sewer Overflow/Spill/ |
Type: Category 1 Spill; Rainfall Exceeded Design, I and I (Separate Collection System Only) caused 74300 gallons of sewage to spill from Manhole at East Painter Street Man Hole to Surface Water |
Violation |
None |
SSO |
Rio Dell City CS |
300093 |
2022-0103-DWQ |
N |
1138289 |
12/23/2024 |
Sanitary Sewer Overflow/Spill/ |
Type: Category 1 Spill; Rainfall Exceeded Design, I and I (Separate Collection System Only),Flow Exceeded Capacity (Separate Collection System Only) caused 78336 gallons of sewage to spill from Manhole at End of Painter Street Manhole to Surface Water |
Violation |
None |
SSO |
Rio Dell City CS |
300093 |
2022-0103-DWQ |
N |
1136852 |
11/21/2024 |
Sanitary Sewer Overflow/Spill/ |
Type: Category 1 Spill; Rainfall Exceeded Design, I and I (Separate Collection System Only) caused 4800 gallons of sewage to spill from Manhole at End of Painter Street Manhole to Surface Water |
Violation |
None |
SSO |
Rio Dell City CS |
300093 |
2022-0103-DWQ |
N |
1138716 |
01/03/2025 |
Sanitary Sewer Overflow/Spill/ |
Type: Category 1 Spill; Rainfall Exceeded Design, I and I (Separate Collection System Only) caused 53550 gallons of sewage to spill from Manhole at End of Painter Street Manhole to Surface Water |
Violation |
None |
SSO |
Rio Dell City CS |
300093 |
2022-0103-DWQ |
N |
1140037 |
02/13/2025 |
Sanitary Sewer Overflow/Spill/ |
Type: Category 1 Spill; Rainfall Exceeded Design, I and I (Separate Collection System Only) caused 16830 gallons of sewage to spill from Manhole at End of Painter Street Manhole to Surface Water |
Violation |
None |
SSO |
Rio Dell City CS |
300093 |
2022-0103-DWQ |
N |
1138537 |
12/29/2024 |
Sanitary Sewer Overflow/Spill/ |
Type: Category 1 Spill; Rainfall Exceeded Design, I and I (Separate Collection System Only) caused 84915 gallons of sewage to spill from Manhole at End of Painter Street Manhole to Surface Water |
Violation |
None |
SSO |
Rio Dell City CS |
300093 |
2022-0103-DWQ |
N |
1140062 |
02/02/2025 |
Late Report |
Quarterly SMR ( MONNPDES ) report for Q4 2024 (2273587) was due on 01-FEB-25 |
Violation |
None |
Report |
HSU Telonicher Marine Laboratory |
433471 |
R1-2019-0037 |
N |
1143177 |
02/28/2025 |
CAT1 |
BOD5 @ 20 Deg. C, Percent Removal Monthly Average limit is 85 % and reported value was 53 % at EFF-001. |
Violation |
N |
Report |
Mendocino County WWD#2-Anchor Bay |
443040 |
R1-2021-0005 |
N |
1141243 |
03/02/2025 |
Late Report |
Annual SMR ( MONNPDES ) report for 2024 (2732310) was due on 01-MAR-25 |
Violation |
None |
Report |
Covelo POTW |
453119 |
R1-2023-0006 |
N |
1136017 |
11/02/2024 |
Late Report |
Quarterly SMR ( MONNPDES ) report for Q3 2024 (2732292) was due on 01-NOV-24 |
Violation |
None |
Report |
Covelo POTW |
453119 |
R1-2023-0006 |
N |
1146067 |
08/02/2025 |
Late Report |
Quarterly SMR ( MONNPDES ) report for Q2 2025 (2732295) was due on 01-AUG-25 |
Violation |
None |
Report |
Covelo POTW |
453119 |
R1-2023-0006 |
N |
1140069 |
02/02/2025 |
Late Report |
Quarterly SMR ( MONNPDES ) report for Q4 2024 (2732293) was due on 01-FEB-25 |
Violation |
None |
Report |
Covelo POTW |
453119 |
R1-2023-0006 |
N |
1141242 |
03/02/2025 |
Late Report |
Annual SMR ( MONNPDES ) report for 2024 (2473151) was due on 01-MAR-25 |
Violation |
None |
Report |
Mendocino County WWD#2-Anchor Bay |
443040 |
R1-2021-0005 |
N |
1143179 |
01/31/2025 |
CAT1 |
Total Suspended Solids (TSS), Percent Removal Monthly Average limit is 85 % and reported value was 74 % at EFF-001. |
Violation |
N |
Report |
Mendocino County WWD#2-Anchor Bay |
443040 |
R1-2021-0005 |
N |
1147213 |
09/02/2025 |
Late Report |
Once Only OneTime ( TECHRPT ) (Disaster Preparedness Assessment Report and Action Plan) report for 2023/12/01 (2766223) was due on 01-SEP-25 |
Violation |
None |
Report |
Rio Dell City WWTF |
454754 |
R1-2023-0022 |
N |
1143347 |
05/02/2025 |
Late Report |
Quarterly SMR ( MONNPDES ) report for Q1 2025 (2732294) was due on 01-MAY-25 |
Violation |
None |
Report |
Covelo POTW |
453119 |
R1-2023-0006 |
N |
1143178 |
02/28/2025 |
CAT1 |
Total Suspended Solids (TSS), Percent Removal Monthly Average limit is 85 % and reported value was 69 % at EFF-001. |
Violation |
N |
Report |
Mendocino County WWD#2-Anchor Bay |
443040 |
R1-2021-0005 |
N |
1146469 |
02/27/2025 |
Order Conditions |
The unauthorized discharge that occurred on February 27, 2025 through June 5, 2025 of untreated wastewater to groundwater violates Discharge Prohibitions in the Covelo CSD?s WDRs and NPDES Permit, Order No. R1- 2023-0006. |
Violation |
None |
Inspection |
Covelo POTW |
453119 |
R1-2023-0006 |
N |
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