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. |
1136023 |
11/02/2024 |
Late Report |
Quarterly SMR ( PRETRPT ) (Pretreatment Mon Rpt Quarterly) report for Q3 2024 (2829692) was due on 01-NOV-24 |
Violation |
None |
Report |
San Luis Obispo WWTP |
399576 |
R3-2014-0033 |
N |
1136008 |
11/02/2024 |
Late Report |
Quarterly SMR ( PRETRPT ) (Pretreatment Mon Rpt Quarterly) report for Q3 2024 (2910117) was due on 01-NOV-24 |
Violation |
None |
Report |
San Luis Obispo WWTP |
456704 |
R3-2024-0001 |
N |
1136007 |
11/02/2024 |
Late Report |
Quarterly SMR ( MONNPDES ) (NPDES Mon Rpt Quarterly) report for Q3 2024 (2910119) was due on 01-NOV-24 |
Violation |
None |
Report |
San Luis Obispo WWTP |
456704 |
R3-2024-0001 |
N |
1135201 |
09/11/2024 |
Deficient Monitoring |
The Water Quality Laboratory used method Standard Methods 9223 for Total Coliform Monitoring through 9/12/24. Standard Methods 9223 is not approved to measure Total Coliforms in wastewater but is approved to measure coliforms in Title 22 Recycled water. All analyses conducted through 9/12/24 are reported at the monitoring location EFF-002. |
Violation |
N |
eSMR |
San Luis Obispo WWTP |
456704 |
R3-2024-0001 |
N |
1135200 |
09/04/2024 |
Deficient Monitoring |
The Water Quality Laboratory used method Standard Methods 9223 for Total Coliform Monitoring through 9/12/24. Standard Methods 9223 is not approved to measure Total Coliforms in wastewater but is approved to measure coliforms in Title 22 Recycled water. All analyses conducted through 9/12/24 are reported at the monitoring location EFF-002. |
Violation |
N |
eSMR |
San Luis Obispo WWTP |
456704 |
R3-2024-0001 |
N |
1135199 |
09/03/2024 |
Deficient Monitoring |
The Water Quality Laboratory used method Standard Methods 9223 for Total Coliform Monitoring through 9/12/24. Standard Methods 9223 is not approved to measure Total Coliforms in wastewater but is approved to measure coliforms in Title 22 Recycled water. All analyses conducted through 9/12/24 are reported at the monitoring location EFF-002. |
Violation |
N |
eSMR |
San Luis Obispo WWTP |
456704 |
R3-2024-0001 |
N |
1135198 |
09/12/2024 |
Deficient Monitoring |
The Water Quality Laboratory used method Standard Methods 9223 for Total Coliform Monitoring through 9/12/24. Standard Methods 9223 is not approved to measure Total Coliforms in wastewater but is approved to measure coliforms in Title 22 Recycled water. All analyses conducted through 9/12/24 are reported at the monitoring location EFF-002. |
Violation |
N |
eSMR |
San Luis Obispo WWTP |
456704 |
R3-2024-0001 |
N |
1135197 |
09/09/2024 |
Deficient Monitoring |
The Water Quality Laboratory used method Standard Methods 9223 for Total Coliform Monitoring through 9/12/24. Standard Methods 9223 is not approved to measure Total Coliforms in wastewater but is approved to measure coliforms in Title 22 Recycled water. All analyses conducted through 9/12/24 are reported at the monitoring location EFF-002. |
Violation |
N |
eSMR |
San Luis Obispo WWTP |
456704 |
R3-2024-0001 |
N |
1135196 |
09/06/2024 |
Deficient Monitoring |
The Water Quality Laboratory used method Standard Methods 9223 for Total Coliform Monitoring through 9/12/24. Standard Methods 9223 is not approved to measure Total Coliforms in wastewater but is approved to measure coliforms in Title 22 Recycled water. All analyses conducted through 9/12/24 are reported at the monitoring location EFF-002. |
Violation |
N |
eSMR |
San Luis Obispo WWTP |
456704 |
R3-2024-0001 |
N |
1135195 |
09/05/2024 |
Deficient Monitoring |
The Water Quality Laboratory used method Standard Methods 9223 for Total Coliform Monitoring through 9/12/24. Standard Methods 9223 is not approved to measure Total Coliforms in wastewater but is approved to measure coliforms in Title 22 Recycled water. All analyses conducted through 9/12/24 are reported at the monitoring location EFF-002. |
Violation |
N |
eSMR |
San Luis Obispo WWTP |
456704 |
R3-2024-0001 |
N |
1135194 |
09/10/2024 |
Deficient Monitoring |
The Water Quality Laboratory used method Standard Methods 9223 for Total Coliform Monitoring through 9/12/24. Standard Methods 9223 is not approved to measure Total Coliforms in wastewater but is approved to measure coliforms in Title 22 Recycled water. All analyses conducted through 9/12/24 are reported at the monitoring location EFF-002. |
Violation |
N |
eSMR |
San Luis Obispo WWTP |
456704 |
R3-2024-0001 |
N |
1135093 |
09/12/2024 |
Order Conditions |
Effluent-002 Total Coliform Daily Max 25.6 MPN/100 mL on 9/12/24. The elevated results were all analyzed using Standard Methods 9223. Standard Methods 9223 is prone to a positive test interference from non-coliform heterotrophic background bacteria. All results have been <1.8 MPN/ 100mL since switching to the analytical method SM 9221 (Multiple Tube Fermentation). |
Violation |
N |
eSMR |
San Luis Obispo WWTP |
456704 |
R3-2024-0001 |
N |
1135092 |
09/03/2024 |
Surface Water |
RSW-005 was 26 true color units greater than RSW-004. The SLO WRRF upgrade, known as SLO Water+, is nearing completion; however, the facility can only operate on its full its biological treatment process until the completion of the Liquids Phase Two. With two of four bioreactors online, hydraulic retention time is limited. |
Violation |
N |
eSMR |
San Luis Obispo WWTP |
456704 |
R3-2024-0001 |
N |
1135091 |
09/19/2024 |
Order Conditions |
Effluent-002 7 Sample Median 3.1 MPN/100 mL on 9/19/24. The elevated results were all analyzed using Standard Methods 9223. Standard Methods 9223 is prone to a positive test interference from non-coliform heterotrophic background bacteria. All results have been <1.8 MPN/ 100mL since switching to the analytical method SM 9221 (Multiple Tube Fermentation). |
Violation |
N |
eSMR |
San Luis Obispo WWTP |
456704 |
R3-2024-0001 |
N |
1135090 |
09/13/2024 |
Order Conditions |
Effluent-002 Total Coliform Daily Max 65.0 MPN/100 mL on 9/13/24. The elevated results were all analyzed using Standard Methods 9223. Standard Methods 9223 is prone to a positive test interference from non-coliform heterotrophic background bacteria. All results have been <1.8 MPN/ 100mL since switching to the analytical method SM 9221 (Multiple Tube Fermentation). |
Violation |
N |
eSMR |
San Luis Obispo WWTP |
456704 |
R3-2024-0001 |
N |
1135089 |
09/02/2024 |
Deficient Monitoring |
The Water Quality Laboratory used method Standard Methods 9223 for Total Coliform Monitoring through 9/12/24. Standard Methods 9223 is not approved to measure Total Coliforms in wastewater but is approved to measure coliforms in Title 22 Recycled water. All analyses conducted through 9/12/24 are reported at the monitoring location EFF-002. |
Violation |
N |
eSMR |
San Luis Obispo WWTP |
456704 |
R3-2024-0001 |
N |
1134600 |
07/02/2024 |
Surface Water |
The annual running mean for RSW-005 sodium was 70 mg/L |
Violation |
N |
eSMR |
San Luis Obispo WWTP |
399576 |
R3-2014-0033 |
N |
1133723 |
07/23/2024 |
Sanitary Sewer Overflow/Spill/ |
Type: Category 1 Spill; Debris from Lateral, Root Intrusion caused 911 gallons of sewage to spill from Lateral Clean Out (Private) at 2015 Monterey St to Paved Surface, Surface Water, Unpaved Surface |
Violation |
None |
SSO |
San Luis Obispo CS |
299937 |
2022-0103-DWQ |
N |
1132902 |
08/29/2024 |
Surface Water |
Increase of 29 color units from RSW-004 and RSW-005. |
Violation |
N |
eSMR |
San Luis Obispo WWTP |
399576 |
R3-2014-0033 |
N |
1132901 |
08/22/2024 |
Surface Water |
Increase of 24color units from RSW-004 and RSW-005. |
Violation |
N |
eSMR |
San Luis Obispo WWTP |
399576 |
R3-2014-0033 |
N |
1132900 |
08/06/2024 |
Surface Water |
Increase of 16 color units from RSW-004 and RSW-005. |
Violation |
N |
eSMR |
San Luis Obispo WWTP |
399576 |
R3-2014-0033 |
N |
1131328 |
07/31/2024 |
CAT1 |
Nitrate, Total (as N) Monthly Average limit is 10.0 mg/L and reported value was 15.0 mg/L at EFF-001. |
Violation |
N |
eSMR |
San Luis Obispo WWTP |
399576 |
R3-2014-0033 |
N |
1131327 |
07/31/2024 |
Surface Water |
Increase of 19 color units from RSW-004 and RSW-005. |
Violation |
N |
eSMR |
San Luis Obispo WWTP |
399576 |
R3-2014-0033 |
N |
1131326 |
07/17/2024 |
Surface Water |
Increase of 19 color units from RSW-004 and RSW-005. |
Violation |
N |
eSMR |
San Luis Obispo WWTP |
399576 |
R3-2014-0033 |
N |
1131325 |
07/02/2024 |
Surface Water |
Increase of 19 color units from RSW-004 and RSW-005. |
Violation |
N |
eSMR |
San Luis Obispo WWTP |
399576 |
R3-2014-0033 |
N |
1130042 |
04/02/2024 |
Surface Water |
Annual running mean 72mg/L |
Violation |
N |
eSMR |
San Luis Obispo WWTP |
399576 |
R3-2014-0033 |
N |
1130041 |
06/19/2024 |
Surface Water |
RSW-005 was 16 true color units greater than RSW-004 |
Violation |
N |
eSMR |
San Luis Obispo WWTP |
399576 |
R3-2014-0033 |
N |
1130040 |
06/30/2024 |
CAT1 |
Nitrate, Total (as N) Monthly Average limit is 10.0 mg/L and reported value was 14.0 mg/L at EFF-001. |
Violation |
N |
eSMR |
San Luis Obispo WWTP |
399576 |
R3-2014-0033 |
N |
1128946 |
05/31/2024 |
CAT1 |
Nitrate, Total (as N) Monthly Average limit is 10.0 mg/L and reported value was 14.0 mg/L at EFF-001. |
Violation |
N |
eSMR |
San Luis Obispo WWTP |
399576 |
R3-2014-0033 |
N |
1128176 |
04/30/2024 |
CAT1 |
Nitrate, Total (as N) Monthly Average limit is 10.0 mg/L and reported value was 15.0 mg/L at EFF-001. |
Violation |
N |
eSMR |
San Luis Obispo WWTP |
399576 |
R3-2014-0033 |
N |
1126356 |
01/02/2024 |
Surface Water |
RSW-005 annual running mean for sodium was 79 mg/L. WRRF Influent sodium was 110 mg/L and EFF-001 was 101 mg/L on 1/2/2024. |
Violation |
N |
eSMR |
San Luis Obispo WWTP |
399576 |
R3-2014-0033 |
N |
1126355 |
03/31/2024 |
CAT1 |
Nitrate, Total (as N) Monthly Average limit is 10 mg/L and reported value was 11 mg/L at EFF-001. |
Violation |
N |
eSMR |
San Luis Obispo WWTP |
399576 |
R3-2014-0033 |
N |
1125298 |
02/29/2024 |
CAT1 |
Nitrate, Total (as N) Monthly Average limit is 10.0 mg/L and reported value was 16.5 mg/L at EFF-001. |
Violation |
N |
eSMR |
San Luis Obispo WWTP |
399576 |
R3-2014-0033 |
N |
1124513 |
01/10/2024 |
Surface Water |
RSW-004 11 Color Units, RSW-005 27 Color units. The upgraded liquids treatment process does not use sodium hypochlorite for disinfection. True color-causing substances, like humic acids, are not removed by the membrane filtration unit. Elevated EFF-001 color impacted receiving water color quality at RSW-005. |
Violation |
N |
eSMR |
San Luis Obispo WWTP |
399576 |
R3-2014-0033 |
N |
1124512 |
01/30/2024 |
Surface Water |
RSW-004 13 Color Units, RSW-005 29 Color units. The upgraded liquids treatment process does not use sodium hypochlorite for disinfection. True color-causing substances, like humic acids, are not removed by the membrane filtration unit. Elevated EFF-001 color impacted receiving water color quality at RSW-005. |
Violation |
N |
eSMR |
San Luis Obispo WWTP |
399576 |
R3-2014-0033 |
N |
1124510 |
01/18/2024 |
Surface Water |
RSW-004 8 Color Units, RSW-005 30 Color units. The upgraded liquids treatment process does not use sodium hypochlorite for disinfection. True color-causing substances, like humic acids, are not removed by the membrane filtration unit. Elevated EFF-001 color impacted receiving water color quality at RSW-005. |
Violation |
N |
eSMR |
San Luis Obispo WWTP |
399576 |
R3-2014-0033 |
N |
1124508 |
01/18/2024 |
Surface Water |
RSW-004 Temp 13.3 Deg C, RSW-005 18.5 Deg C, 10 deg F difference not enough cooling towers were in service. The operations team has been balancing elevated effluent pH (see past EFF-001 exceedances on 8/4/23 and 8/17/23) with receiving water temperatures. |
Violation |
N |
eSMR |
San Luis Obispo WWTP |
399576 |
R3-2014-0033 |
N |
1124506 |
01/31/2024 |
CAT1 |
Nitrate, Total (as N) Monthly Average limit is 10.0 mg/L and reported value was 15.0 mg/L at EFF-001. |
Violation |
N |
eSMR |
San Luis Obispo WWTP |
399576 |
R3-2014-0033 |
N |
1124505 |
01/10/2024 |
Surface Water |
RSW-004 Temp 12.8 Deg C, RSW-005 17.6 Deg C, 9 deg F difference Not enough cooling towers were in service. The operations team has been balancing elevated effluent pH (see past EFF-001 exceedances on 8/4/23 and 8/17/23) with receiving water temperatures. |
Violation |
N |
eSMR |
San Luis Obispo WWTP |
399576 |
R3-2014-0033 |
N |
1124504 |
01/02/2024 |
Surface Water |
RSW-004 Temp 13.7 Deg C, RSW-005 17.8 Deg C, 7 deg F difference Not enough cooling towers were in service. The operations team has been balancing elevated effluent pH (see past EFF-001 exceedances on 8/4/23 and 8/17/23) with receiving water temperatures. |
Violation |
N |
eSMR |
San Luis Obispo WWTP |
399576 |
R3-2014-0033 |
N |
1124503 |
01/30/2024 |
Surface Water |
RSW-004 Temp 13.7 Deg C, RSW-005 17.4 Deg C, 7 deg F difference Not enough cooling towers were in service. The operations team has been balancing elevated effluent pH (see past EFF-001 exceedances on 8/4/23 and 8/17/23) with receiving water temperatures. |
Violation |
N |
eSMR |
San Luis Obispo WWTP |
399576 |
R3-2014-0033 |
N |
1124274 |
02/02/2024 |
Late Report |
Annual SMR ( SLUDGE ) (Biosolids (Sludge) Tech Rpt) report for 2023 (2673352) was due on 01-FEB-24 |
Violation |
None |
Report |
San Luis Obispo WWTP |
399576 |
R3-2014-0033 |
N |
1123562 |
12/06/2023 |
Surface Water |
Color The upgraded liquids treatment process does not use sodium hypochlorite for disinfection. True color-causing substances, like humic acids, are not removed by the membrane filtration unit. Elevated EFF-001 color impacted receiving water color quality at RSW-005. 12/6/23 RSW-005 37 color units, 29 color units greater than RSW-004 |
Violation |
N |
eSMR |
San Luis Obispo WWTP |
399576 |
R3-2014-0033 |
N |
1123561 |
12/01/2023 |
Surface Water |
Temperature not enough cooling towers were in service. The operations team has been balancing elevated effluent pH (see past EFF-001 exceedances on 8/4/23 and 8/17/23) with receiving water temperatures. 12/1/23 RSW-005 22.1 °C, 12°F greater than RSW-004. |
Violation |
N |
eSMR |
San Luis Obispo WWTP |
399576 |
R3-2014-0033 |
N |
1123560 |
12/14/2023 |
Surface Water |
Temperature not enough cooling towers were in service. The operations team has been balancing elevated effluent pH (see past EFF-001 exceedances on 8/4/23 and 8/17/23) with receiving water temperatures. 12/14/23 RSW-005 21.7 °C, 13°F greater than RSW-004 |
Violation |
N |
eSMR |
San Luis Obispo WWTP |
399576 |
R3-2014-0033 |
N |
1123559 |
12/07/2023 |
Surface Water |
Temperature not enough cooling towers were in service. The operations team has been balancing elevated effluent pH (see past EFF-001 exceedances on 8/4/23 and 8/17/23) with receiving water temperatures. 12/7/23 RSW-005 22.1 °C, 12°F greater than RSW-004 |
Violation |
N |
eSMR |
San Luis Obispo WWTP |
399576 |
R3-2014-0033 |
N |
1123558 |
12/06/2023 |
Surface Water |
Temperature not enough cooling towers were in service. The operations team has been balancing elevated effluent pH (see past EFF-001 exceedances on 8/4/23 and 8/17/23) with receiving water temperatures. 12/6/23 RSW-005 22.1 °C, 12°F greater than RSW-004 |
Violation |
N |
eSMR |
San Luis Obispo WWTP |
399576 |
R3-2014-0033 |
N |
1123557 |
12/02/2023 |
Surface Water |
Temperature not enough cooling towers were in service. The operations team has been balancing elevated effluent pH (see past EFF-001 exceedances on 8/4/23 and 8/17/23) with receiving water temperatures. 12/2/23 RSW-005 22.3 °C, 13°F greater than RSW-004 |
Violation |
N |
eSMR |
San Luis Obispo WWTP |
399576 |
R3-2014-0033 |
N |
1123556 |
12/09/2023 |
Surface Water |
Temperature not enough cooling towers were in service. The operations team has been balancing elevated effluent pH (see past EFF-001 exceedances on 8/4/23 and 8/17/23) with receiving water temperatures. 12/9/23 RSW-005 20.8 °C, 12°F greater than RSW-004 |
Violation |
N |
eSMR |
San Luis Obispo WWTP |
399576 |
R3-2014-0033 |
N |
1123555 |
12/03/2023 |
Surface Water |
Temperature not enough cooling towers were in service. The operations team has been balancing elevated effluent pH (see past EFF-001 exceedances on 8/4/23 and 8/17/23) with receiving water temperatures. 12/3/23 RSW-005 21.9 °C, 12°F greater than RSW-004 |
Violation |
N |
eSMR |
San Luis Obispo WWTP |
399576 |
R3-2014-0033 |
N |
1123554 |
12/08/2023 |
Surface Water |
Temperature not enough cooling towers were in service. The operations team has been balancing elevated effluent pH (see past EFF-001 exceedances on 8/4/23 and 8/17/23) with receiving water temperatures. 12/8/23 RSW-005 21.6 °C, 11°F greater than RSW-004 |
Violation |
N |
eSMR |
San Luis Obispo WWTP |
399576 |
R3-2014-0033 |
N |
1123553 |
12/16/2023 |
Surface Water |
Temperature not enough cooling towers were in service. The operations team has been balancing elevated effluent pH (see past EFF-001 exceedances on 8/4/23 and 8/17/23) with receiving water temperatures. 12/16/23 RSW-005 21.2 °C, 14°F greater than RSW-004 |
Violation |
N |
eSMR |
San Luis Obispo WWTP |
399576 |
R3-2014-0033 |
N |
1123552 |
12/15/2023 |
Surface Water |
Temperature not enough cooling towers were in service. The operations team has been balancing elevated effluent pH (see past EFF-001 exceedances on 8/4/23 and 8/17/23) with receiving water temperatures. 12/15/23 RSW-005 21.7 °C, 13°F greater than RSW-004 |
Violation |
N |
eSMR |
San Luis Obispo WWTP |
399576 |
R3-2014-0033 |
N |
1123551 |
12/13/2023 |
Deficient Monitoring |
Color The upgraded liquids treatment process does not use sodium hypochlorite for disinfection. True color-causing substances, like humic acids, are not removed by the membrane filtration unit. Elevated EFF-001 color impacted receiving water color quality at RSW-005. 12/13/23 RSW-005 39 color units, 31 color units greater than RSW-004 |
Violation |
N |
eSMR |
San Luis Obispo WWTP |
399576 |
R3-2014-0033 |
N |
1123550 |
12/17/2023 |
Surface Water |
Temperature not enough cooling towers were in service. The operations team has been balancing elevated effluent pH (see past EFF-001 exceedances on 8/4/23 and 8/17/23) with receiving water temperatures. 12/17/23 RSW-005 21.1 °C, 12°F greater than RSW-004 |
Violation |
N |
eSMR |
San Luis Obispo WWTP |
399576 |
R3-2014-0033 |
N |
1123549 |
12/13/2023 |
Surface Water |
Temperature not enough cooling towers were in service. The operations team has been balancing elevated effluent pH (see past EFF-001 exceedances on 8/4/23 and 8/17/23) with receiving water temperatures. 12/13/23 RSW-005 21.9 °C, 14°F greater than RSW-004 |
Violation |
N |
eSMR |
San Luis Obispo WWTP |
399576 |
R3-2014-0033 |
N |
1123548 |
12/31/2023 |
CAT1 |
Nitrate, Total (as NO3) Monthly Average limit is 10.0 mg/L and reported value was 12.0 mg/L at EFF-001. |
Violation |
N |
eSMR |
San Luis Obispo WWTP |
399576 |
R3-2014-0033 |
N |
1123547 |
12/12/2023 |
Surface Water |
Temperature not enough cooling towers were in service. The operations team has been balancing elevated effluent pH (see past EFF-001 exceedances on 8/4/23 and 8/17/23) with receiving water temperatures. 12/12/23 RSW-005 21.6 °C, 12°F greater than RSW-004 |
Violation |
N |
eSMR |
San Luis Obispo WWTP |
399576 |
R3-2014-0033 |
N |
1123546 |
12/11/2023 |
Surface Water |
Temperature not enough cooling towers were in service. The operations team has been balancing elevated effluent pH (see past EFF-001 exceedances on 8/4/23 and 8/17/23) with receiving water temperatures. 12/11/23 RSW-005 22.0. °C, 13°F greater than RSW-004 |
Violation |
N |
eSMR |
San Luis Obispo WWTP |
399576 |
R3-2014-0033 |
N |
1123545 |
12/05/2023 |
Surface Water |
Temperature not enough cooling towers were in service. The operations team has been balancing elevated effluent pH (see past EFF-001 exceedances on 8/4/23 and 8/17/23) with receiving water temperatures. 12/5/23 RSW-005 22.9 °C, 12°F greater than RSW-004 |
Violation |
N |
eSMR |
San Luis Obispo WWTP |
399576 |
R3-2014-0033 |
N |
1123544 |
12/10/2023 |
Surface Water |
Temperature not enough cooling towers were in service. The operations team has been balancing elevated effluent pH (see past EFF-001 exceedances on 8/4/23 and 8/17/23) with receiving water temperatures. 12/10/23 RSW-005 22.6 °C, 14°F greater than RSW-004 |
Violation |
N |
eSMR |
San Luis Obispo WWTP |
399576 |
R3-2014-0033 |
N |
1123543 |
12/04/2023 |
Surface Water |
Temperature not enough cooling towers were in service. The operations team has been balancing elevated effluent pH (see past EFF-001 exceedances on 8/4/23 and 8/17/23) with receiving water temperatures. 12/4/23 RSW-005 22.1 °C, 12°F greater than RSW-004 |
Violation |
N |
eSMR |
San Luis Obispo WWTP |
399576 |
R3-2014-0033 |
N |
1123542 |
12/28/2023 |
Surface Water |
Temperature not enough cooling towers were in service. The operations team has been balancing elevated effluent pH (see past EFF-001 exceedances on 8/4/23 and 8/17/23) with receiving water temperatures. 12/28/23 RSW-005 19.4 °C, 8°F greater than RSW-004 |
Violation |
N |
eSMR |
San Luis Obispo WWTP |
399576 |
R3-2014-0033 |
N |
1123541 |
12/20/2023 |
Surface Water |
Color The upgraded liquids treatment process does not use sodium hypochlorite for disinfection. True color-causing substances, like humic acids, are not removed by the membrane filtration unit. Elevated EFF-001 color impacted receiving water color quality at RSW-005. 12/20/23 RSW-005 35 color units, 25 color units greater than RSW-004 |
Violation |
N |
eSMR |
San Luis Obispo WWTP |
399576 |
R3-2014-0033 |
N |
1123102 |
11/29/2023 |
Surface Water |
Not enough cooling towers were in service. The operations team has been balancing elevated effluent pH (see past EFF-001 exceedances on 8/4/23 and 8/17/23) with receiving water temperatures. RSW-005 temp: 20.2 °C, 12°F greater than RSW-004 |
Violation |
N |
eSMR |
San Luis Obispo WWTP |
399576 |
R3-2014-0033 |
N |
1123093 |
11/30/2023 |
Surface Water |
Not enough cooling towers were in service. The operations team has been balancing elevated effluent pH (see past EFF-001 exceedances on 8/4/23 and 8/17/23) with receiving water temperatures. RSW-005 temp: 22.1 °C, 10°F greater than RSW-004 |
Violation |
N |
eSMR |
San Luis Obispo WWTP |
399576 |
R3-2014-0033 |
N |
1123092 |
11/28/2023 |
Surface Water |
Not enough cooling towers were in service. The operations team has been balancing elevated effluent pH (see past EFF-001 exceedances on 8/4/23 and 8/17/23) with receiving water temperatures. RSW-005 temp: 21.8 °C, 14°F greater than RSW-004 |
Violation |
N |
eSMR |
San Luis Obispo WWTP |
399576 |
R3-2014-0033 |
N |
1123091 |
11/27/2023 |
Surface Water |
Not enough cooling towers were in service. The operations team has been balancing elevated effluent pH (see past EFF-001 exceedances on 8/4/23 and 8/17/23) with receiving water temperatures. RSW-005 temp: 21.5 °C, 14°F greater than RSW-004 |
Violation |
N |
eSMR |
San Luis Obispo WWTP |
399576 |
R3-2014-0033 |
N |
Report defaults to display violations within the last year. Click here to see last five years of violations. Refer to the Interactive Violation Report for more data.
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