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. |
1143102 |
04/23/2025 |
Sanitary Sewer Overflow/Spill/ |
Type: Category 1 Spill; Construction Diversion Failure caused 100 gallons of sewage to spill from Manhole at Joint Outfall "B" ? Unit 6G Manhole (MH) B 0490 (Joint Outfall System) to Drainage Conveyance System that discharges to surface water |
Violation |
None |
SSO |
County Sanitation District Joint Outfall CS |
317335 |
2022-0103-DWQ |
N |
1141705 |
03/14/2025 |
Sanitary Sewer Overflow/Spill/ |
Type: Category 1 Spill; Fats, Oil and Grease (FOG) caused 475 gallons of sewage to spill from Manhole at Joint Outfall C - Unit 4A (Joint Outfall System) to Drainage Conveyance System that discharges to surface water,Other (specify below),Paved Surface |
Violation |
None |
SSO |
County Sanitation District Joint Outfall CS |
317335 |
2022-0103-DWQ |
N |
1134026 |
07/20/2023 |
Sanitary Sewer Overflow/Spill/ |
Type: Category 1 Spill; Other (specify below) caused 4520 gallons of sewage to spill from Manhole at 28th Street Trunk (District 29) to Surface Water |
Violation |
None |
SSO |
County Sanitation District No. 29 CS |
317145 |
2022-0103-DWQ |
N |
1133445 |
02/04/2024 |
Sanitary Sewer Overflow/Spill/ |
Type: Category 1 Spill; Rainfall Exceeded Design, I and I (Separate Collection System Only) caused 65300 gallons of sewage to spill from Manhole at Joint Outfall B ? Unit 2A Manhole (MH) B 0218 to Surface Water |
Violation |
None |
SSO |
County Sanitation District Joint Outfall CS |
317335 |
2022-0103-DWQ |
N |
1133444 |
02/06/2024 |
Sanitary Sewer Overflow/Spill/ |
Type: Category 1 Spill; Rainfall Exceeded Design, I and I (Separate Collection System Only) caused 23219 gallons of sewage to spill from Manhole at Scott Avenue Trunk and Scott Avenue Relief Trunk to Drainage Conveyance System that discharges to surface water, Paved Surface, Street/Curb and Gutter (2 3), Surface Water |
Violation |
None |
SSO |
County Sanitation District Joint Outfall CS |
317335 |
2022-0103-DWQ |
N |
1133443 |
02/06/2024 |
Sanitary Sewer Overflow/Spill/ |
Type: Category 1 Spill; Rainfall Exceeded Design, I and I (Separate Collection System Only) caused 30000 gallons of sewage to spill from Manhole at La Mirada Trunk, Sections 1&2 to Surface Water |
Violation |
None |
SSO |
County Sanitation District Joint Outfall CS |
317335 |
2022-0103-DWQ |
N |
1133442 |
02/05/2024 |
Sanitary Sewer Overflow/Spill/ |
Type: Category 1 Spill; Flow Exceeded Capacity (Separate Collection System Only) caused 49025 gallons of sewage to spill from Manhole at Marina Trunk Sewer, Section 1A (District 3) to Drainage Conveyance System that discharges to surface water, Paved Surface, Street/Curb and Gutter (2 3), Surface Water |
Violation |
None |
SSO |
County Sanitation District Joint Outfall CS |
317335 |
2022-0103-DWQ |
N |
1133441 |
02/04/2024 |
Sanitary Sewer Overflow/Spill/ |
Type: Category 1 Spill; Flow Exceeded Capacity (Separate Collection System Only) caused 8013800 gallons of sewage to spill from Manhole at Joint Outfall B Unit 9A Trunk Sewer (Joint Outfall System) to Drainage Conveyance System that discharges to surface water, Paved Surface, Street/Curb and Gutter (2 3), Surface Water |
Violation |
None |
SSO |
County Sanitation District Joint Outfall CS |
317335 |
2022-0103-DWQ |
N |
1133440 |
02/04/2024 |
Sanitary Sewer Overflow/Spill/ |
Type: Category 1 Spill; Rainfall Exceeded Design, I and I (Separate Collection System Only) caused 109175 gallons of sewage to spill from Manhole at District #2 Main Trunk to Drainage Conveyance System that discharges to surface water, Paved Surface, Street/Curb and Gutter (2 3), Surface Water |
Violation |
None |
SSO |
County Sanitation District Joint Outfall CS |
317335 |
2022-0103-DWQ |
N |
1133439 |
02/01/2024 |
Sanitary Sewer Overflow/Spill/ |
Type: Category 1 Spill; Rainfall Exceeded Design, I and I (Separate Collection System Only) caused 22500 gallons of sewage to spill from Manhole at Palos Verdes North Slope Trunk, Sections 2&3 (District 5) to Surface Water |
Violation |
None |
SSO |
County Sanitation District Joint Outfall CS |
317335 |
2022-0103-DWQ |
N |
1133438 |
02/01/2024 |
Sanitary Sewer Overflow/Spill/ |
Type: Category 1 Spill; Flow Exceeded Capacity (Separate Collection System Only) caused 20100 gallons of sewage to spill from Manhole at Marina Relief Trunk Sewer, Section 1B (District 3) to Drainage Conveyance System that discharges to surface water, Paved Surface, Street/Curb and Gutter (2 3), Surface Water, Unpaved Surface |
Violation |
None |
SSO |
County Sanitation District Joint Outfall CS |
317335 |
2022-0103-DWQ |
N |
1133437 |
02/01/2024 |
Sanitary Sewer Overflow/Spill/ |
Type: Category 1 Spill; Flow Exceeded Capacity (Separate Collection System Only) caused 38630 gallons of sewage to spill from Manhole at Marina Trunk Sewer, Section 1A (District 3) to Drainage Conveyance System that discharges to surface water, Paved Surface, Street/Curb and Gutter (2 3), Surface Water |
Violation |
None |
SSO |
County Sanitation District Joint Outfall CS |
317335 |
2022-0103-DWQ |
N |
1130719 |
04/17/2024 |
Order Conditions |
Per Section B.2 of the WRRs, reclaimed water used for the irrigation of parks, playgrounds, schoolyard, and other areas where the public has similar access or exposure shall be at all times an adequately disinfected, oxidized, coagulated, clarified, filtered wastewater or a wastewater treated by a sequence of unit processes that will assure an equivalent degree of treatment and reliability. An electrical equipment failure led to a partial tertiary filter bypass event at the San Jose Creek West WRP on April 17, 2024. |
Violation |
N |
eSMR |
San Jose Creek Water Reclamation Plant |
133828 |
87-050 |
N |
1127987 |
07/22/2023 |
Order Conditions |
An unauthorized recycled water discharge of approximately 63,000 gallons occurred on July 22 near the intersection of The Old Road and Valencia Boulevard. The discharge was due to a car accident which sheared a SCVWA recycled water air vacuum valve. Soon after the accident, SCVWA staff arrived onsite and began assessing how to isolate the valve. Due to the location of the leak, it could not be immediately isolated. The discharge likely traveled approximately 1.12 miles in the storm drain and discharged into the Santa Clara River. No adverse effects were observed, nor would they be expected because the discharge was disinfected tertiary treated recycled water and any residual chloride would have dissipated due to contact with substances exerting chlorine demand along the discharge route. SCVWA reported the discharge to the Sanitation District at 1:43 p.m. on July 24, and the Sanitation District notified the Regional Board via email at 3:55 p.m. on July 24 with a follow-up phone call at 3:39 p.m. on July 25. SCVWA submitted a written report to the Regional Board on July 27. |
Violation |
N |
eSMR |
Valencia WRP |
133826 |
87-048 |
N |
1127986 |
06/09/2023 |
Deficient Monitoring |
Per the Reclaimed Water Monitoring Section of the MRP, recycled water total coliform shall be monitored daily. On June 9, recycled water samples were collected for total coliform analysis, but the result was invalidated due to the use of expired media. |
Violation |
N |
eSMR |
Valencia WRP |
133826 |
87-048 |
N |
1127587 |
02/04/2024 |
Order Conditions |
Per Section B.2 of the WRRs, reclaimed water used for the irrigation of parks, playgrounds, schoolyard, and other areas where the public has similar access or exposure shall be at all times an adequately disinfected, oxidized, coagulated, clarified, filtered wastewater or a wastewater treated by a sequence of unit processed that will assure an equivalent degree of treatment and reliability. Exceptionally heavy rainfall led to partial tertiary filter bypass events at the San Jose Creek West WRP on February 4-5, 2024. |
Violation |
N |
eSMR |
San Jose Creek Water Reclamation Plant |
133828 |
87-050 |
N |
1127586 |
02/04/2024 |
Order Conditions |
Per Section B.2 of the WRRs, reclaimed water used for the irrigation of parks, playgrounds, schoolyard, and other areas where the public has similar access or exposure shall be at all times an adequately disinfected, oxidized, coagulated, clarified, filtered wastewater or a wastewater treated by a sequence of unit processed that will assure an equivalent degree of treatment and reliability. Exceptionally heavy rainfall led to partial tertiary filter bypass events at the San Jose Creek East WRP on February 4-5, 2024. |
Violation |
N |
eSMR |
San Jose Creek Water Reclamation Plant |
133828 |
87-050 |
N |
1127585 |
02/05/2024 |
Order Conditions |
Turbidity levels were elevated as a result of the partial tertiary filter bypass events that occurred at the San Jose Creek WRPs on February 4-5, 2024, due to an exceptionally heavy rainfall. Per Section B.2 of the WRRs, treated wastewater should not exceed an average operating turbidity of 2 turbidity units. The turbidity value was 9 NTU at the Outfall Pipeline in the 24-hour composite samples on February 5. |
Violation |
N |
eSMR |
San Jose Creek Water Reclamation Plant |
133828 |
87-050 |
N |
1127584 |
02/05/2024 |
Order Conditions |
Turbidity levels were elevated as a result of the partial tertiary filter bypass events that occurred at the San Jose Creek West WRP on February 4-5, 2024, due to an exceptionally heavy rainfall. Per Section B.2 of the WRRs, treated wastewater should not exceed an average operating turbidity of 2 turbidity units. The turbidity value was 10 NTU at the SJCW WRP in the 24-hour composite samples on February 5. |
Violation |
N |
eSMR |
San Jose Creek Water Reclamation Plant |
133828 |
87-050 |
N |
1115802 |
04/20/2023 |
Sanitary Sewer Overflow/Spill/ |
Type: Category 1. CS Mainentance Caused Spill/Damage caused 539845.0 gallons of sewage to spill from Manhole;LACSD sewer manholes B 0135 and B 0137; and City of Downey sewer manhole located at the intersection of Rives Avenue and Phlox Street at Joint Outfall B - Unit 1C Trunk Sewer (Joint Outfall System) to Other (specify below);The spill entered storm drain systems tributary to the Rio Hondo Channel and the Los Angeles River and reached the Pacific Ocean in Long Beach. Surface water body affected (Rio Hondo Channel, Los Angeles River, and Pacific Ocean). |
Violation |
N |
SSO |
County Sanitation District Joint Outfall CS |
317335 |
2022-0103-DWQ |
Y |
1114735 |
03/15/2023 |
Sanitary Sewer Overflow/Spill/ |
Type: Category 1. Flow Exceeded Capacity (Separate CS Only);High-intensity rainfall in the area tributary to this sewer resulted in increased inflow and infiltration into the sewer system and a higher-than normal peak flow rate in the sewer. caused 9510.0 gallons of sewage to spill from Manhole;LACSD sewer manhole B 0036 at Joint Outfall B - Unit 9A Trunk Sewer (Joint Outfall System) to Separate Storm Drain;Surface Water. Surface water body affected (Dominguez Channel). |
Violation |
N |
SSO |
County Sanitation District Joint Outfall CS |
317335 |
2022-0103-DWQ |
Y |
1114734 |
03/15/2023 |
Sanitary Sewer Overflow/Spill/ |
Type: Category 1. Flow Exceeded Capacity (Separate CS Only);High-intensity rainfall in the area tributary to this sewer resulted in increased inflow and infiltration into the sewer system and a higher-than normal peak flow rate in the sewer. caused 28625.0 gallons of sewage to spill from Manhole;LACSD sewer siphon manhole B 0096 at Joint Outfall B - Unit 1C Trunk Sewer (Joint Outfall System) to Separate Storm Drain;Surface Water. Surface water body affected (Los Angeles River). |
Violation |
N |
SSO |
County Sanitation District Joint Outfall CS |
317335 |
2022-0103-DWQ |
Y |
1114733 |
03/15/2023 |
Sanitary Sewer Overflow/Spill/ |
Type: Category 1. Flow Exceeded Capacity (Separate CS Only);The SSO was caused by a manhole pressure cover that leaked when the sewer surcharged due to a combination of high-intensity rainfall and inflow/infiltration caused 84.0 gallons of sewage to spill from Manhole;LACSD sewer siphon airline manhole located 87 feet east of siphon MH B 1027 at Joint Outfall B - Unit 1C Replacement Trunk Sewer (Joint Outfall System) to Separate Storm Drain;Surface Water. Surface water body affected (Los Angeles River). |
Violation |
N |
SSO |
County Sanitation District Joint Outfall CS |
317335 |
2022-0103-DWQ |
Y |
1112678 |
07/08/2021 |
CAT1 |
Chloride Daily Maximum limit is 250.0 mg/L and reported value was 282.0 mg/L at EFF001 WRR. |
Violation |
N |
Report |
La Canada WWRP |
148251 |
00-099 |
N |
1112677 |
08/10/2021 |
CAT1 |
Chloride Daily Maximum limit is 250 mg/L and reported value was 321 mg/L at EFF001 WRR. |
Violation |
N |
Report |
La Canada WWRP |
148251 |
00-099 |
N |
1112170 |
01/10/2023 |
Sanitary Sewer Overflow/Spill/ |
Type: Category 1. Flow Exceeded Capacity (Separate CS Only);The SSO was caused by faulty manhole pressure covers that leaked when the sewer surcharged due to a combination of high-intensity rainfall and inflow/infiltration. caused 7851.0 gallons of sewage to spill from Manhole;LACSD sewer siphon manhole B 1027 and siphon airline manhole located 87 feet east of MH B 1027 at Joint Outfall B ¿ Unit 1C Replacement Trunk Sewer (Joint Outfall System) to Separate Storm Drain;Surface Water. Surface water body affected (Los Angeles River). |
Violation |
N |
SSO |
County Sanitation District Joint Outfall CS |
317335 |
2022-0103-DWQ |
Y |
1109987 |
11/08/2022 |
Sanitary Sewer Overflow/Spill/ |
Type: Category 1. Flow Exceeded Capacity (Separate CS Only);The SSO was likely caused by a combination of high-intensity rainfall and a hydraulic capacity issue at MH A 0393 which is the first angle point manhole on a relatively steep sewer. High intensity rainfall in the area tributary to this sewer likely resulted in increased inflow and infiltration into the sewer system and a higher-than-normal peak flow rate in the sewer. caused 1700.0 gallons of sewage to spill from Manhole;LACSD sewer manhole A 0393 at Joint Outfall A - Unit 1A San Jose Creek WRP Interceptor (Joint Outfall System) to Drainage Channel. Surface water body affected (Rubio Wash). |
Violation |
N |
SSO |
County Sanitation District Joint Outfall CS |
317335 |
2022-0103-DWQ |
Y |
1100619 |
11/25/2021 |
OEV |
Total Coliform Instantaneous Maximum limit is 23 CFU/100 mL and reported value was 61 CFU/100 mL at EFF1WRR-E. |
Violation |
N |
eSMR |
San Jose Creek Water Reclamation Plant |
133828 |
87-050 |
N |
1100618 |
11/14/2021 |
Order Conditions |
An unauthorized recycled water discharge of approximately 40,500 gallons occurred on November 14 from roughly 11:00 p.m. to 6:30 a.m. on November 15 at the Sanitation Districts' Puente Hills Landfill located at 13130 Crossroads Parkway South in the City of Industry. The Sanitation Districts notified the Regional Board at 9:58 a.m. on November 16, and the LACDPH, via voicemail, immediately thereafter. Sanitation Districts staff discovered the discharge before normal business hours, at 5:30 a.m. on November 15. A damaged solenoid valve remained open, allowing 15 impact sprinklers to operate past their designated irrigation time for approximately 7.5 hours. An estimated 28,500 gallons infiltrated the ground prior to reaching a debris retention basin where an additional 2,000 gallons were collected and diverted to a sewer. The remaining 10,000 gallons travelled 1.13 miles to the San Jose Creek waterway. On November 15, at 1:50 p.m. the Sanitation Districts' Biological Sciences Group found normal dry-weather flow in the concrete channel, and no indications that wildlife had been adversely impacted. No major biological impacts are expected from this incident; chlorine demand exerted by substances along the discharge route is expected to have reduced any chlorine residual from the recycled water. To minimize reoccurrence of similar events, the Sanitation Districts will install automated meter reading systems with notification capabilities and will modify preventative maintenance schedules. |
Violation |
N |
eSMR |
San Jose Creek Water Reclamation Plant |
133828 |
87-050 |
N |
1100573 |
12/30/2021 |
Sanitary Sewer Overflow/Spill/ |
Sanitary Sewer Overflow which occurred on December 30, 2021 at the intersection of 212th Street and Moneta Avenue in the City of Carson. |
Violation |
None |
Inspection |
County Sanitation District No. 8 CS |
317132 |
2006-0003-DWQ |
Y |
1089986 |
02/07/2021 |
Order Conditions |
An unauthorized recycled water discharge of approximately 237,105 gallons occurred from roughly 7:21 p.m. to 9:01 p.m. on February 7, 2021 at the Sanitation Districts' Puente Hills Landfill, located at 13130 Crossroads Parkway South in the City of Industry. The Sanitation Districts notified the Regional Board at 7:58 a.m. on February 9, 2021 and the LACDPH, via email, at 8:06 a.m. on the same day. Sanitation Districts staff discovered the discharge during normal business hours at 8:12 a.m. on Monday, February 8, 2021. The failure of a high-level sensor and relay switch during a temporary network communications outage allowed a recycled water storage tank to overfill for approximately 100 minutes; 179,520 gallons of this discharge were recovered and pumped to a sewer from a concrete-lined debris basin. On February 8, 2021 at 9:29 a.m., the Sanitation District Biology Group found no flow in the channel, no evidence of discharge flow at the San Gabriel River discharge point, and no indications that fish or wildlife had been adversely impacted. No major impacts are anticipated from this incident; chlorine demand exerted by substances along the discharge route is expected to have reduced any chlorine residual from the recycled water. To minimize reoccurrence of similar events, the Sanitation Districts will modify and increase the frequency of related preventative maintenance work orders. |
Violation |
N |
eSMR |
San Jose Creek Water Reclamation Plant |
133828 |
87-050 |
N |
1085849 |
12/09/2020 |
Order Conditions |
An unauthorized recycled water discharge of approximately 80,000 gallons occurred from 9:00 p.m. on December 9, 2020, to 8:00 a.m. on December 10, 2020 at Ancillary Provider Services (end user) located at 16666 Johnson Drive in the City of Industry. The Sanitation Districts notified the Regional Board on January 5, 2021 at 1:46 p.m. and LACDPH, via email, on the same day at 1:56 a.m. Rowland Water District discovered and reported the discharge to the Sanitation Districts on January 5, 2021, at 1:04 p.m. after reviewing December 2020 data. The source of the discharge was a broken irrigation line at the end user's site that has since been repaired on January 7, 2021 and placed back in service. Discharged recycled water entered a nearby storm drain and traveled approximately 0.5 miles before flowing into the concrete lined portion of the San Jose Creek. No major impacts are anticipated from this incident as the concrete-lined channel supports a very limited biological community, and any chlorine residual from the recycled water is expected to have been reduced due to contact with substances exerting chlorine demand along the discharge route or otherwise dissipated in the storm drain and the concrete lined portion of the San Jose Creek. The Sanitation Districts' Biology Group inspected the San Jose Creek at the discharge location into San Jose Creek and determined no biologic impacts or bleaching were observed at either location. To mitigate unauthorized discharge events, AMI meters at end user sites are in the process of being reprogrammed. Additionally, Rowland Water District will continue to remind end users of notification and reporting responsibilities to improve timeliness. |
Violation |
N |
eSMR |
San Jose Creek Water Reclamation Plant |
133828 |
87-050 |
N |
1083363 |
12/25/2020 |
Sanitary Sewer Overflow/Spill/ |
Type: Category 1. Other (specify below);The overflow was caused by a malfunction of a switchboard process logic controller in the control system at the LACSD Long Beach Water Reclamation Plant (WRP) that caused temporary loss of power to the influent pump station, SCADA control and communication systems, and phone systems. caused 223806.0 gallons of sewage to spill from Manhole;6 LACSD sewer manholes: A 0280, C 0331A, C 0507, C 0508, A 0420, A 0421 at Joint Outfall A - Unit 1A Long Beach WRP Interceptor, Sect. 2, Sewage Force Main to Other (specify below);The spill entered the storm drain system tributary to the Los Cerritos Channel and likely reached the Pacific Ocean at Alamitos Bay.. Surface water body affected (Los Cerritos Channel, Alamitos Bay and Pacific Ocean). |
Violation |
N |
SSO |
County Sanitation District Joint Outfall CS |
317335 |
2022-0103-DWQ |
Y |
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