| 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. |
| 1091924 |
05/29/2021 |
Deficient Monitoring |
Results from a recycled water sample collected on May 29 were invalid because the 24-hour composite was comprised of less than 12 aliquots. This issue was caused by a laboratory staff error in running the autosampler equipment; staff were alerted to the error and have been reminded of proper procedures. |
Violation |
N |
eSMR |
Pomona Water Reclamation Plant |
134831 |
81-034 |
N |
| 1114555 |
01/03/2023 |
CAT1 |
Chloride Daily Maximum limit is 150 mg/L and reported value was 151 mg/L at EFF001 WRR. |
Violation |
N |
eSMR |
Pomona Water Reclamation Plant |
134831 |
81-034 |
N |
| 1122428 |
10/11/2023 |
Deficient Monitoring |
Per Section I of the MRP, recycled water samples shall be analyzed daily for total coliform. The total coliform result in the recycled water sample collected on October 11 was invalidated because of improper sample incubation procedure. The analyst failed to write down the read time on the lab bench sheet and was unable to verify the correct duration of the incubation period. Throughout the month, the coliform results were typically non-detectable, except for five separate instances in which it was recorded at 1 CFU/100mL. Therefore, this result was expected to be within normal range and in compliance with the WRRs. To prevent a recurrence of this issue, Laboratory staff will double check that the sample data is properly filled out on the bench sheet. |
Violation |
N |
eSMR |
Pomona Water Reclamation Plant |
134831 |
81-034 |
N |
| 1109187 |
08/13/2022 |
Deficient Monitoring |
Per Section I of the MRP, recycled water shall be analyzed daily for total coliform. Total coliform results from recycled water samples collected on August 13 and 14 were invalid because expired media was inadvertently used during laboratory analysis. To prevent this issue from re-occurring, laboratory staff will ensure that the correct media is used for total coliform analyses. The Pomona WRP was operating under normal conditions during the month. Thus, total coliform concentrations in the final effluent are expected to have been within normal ranges. |
Violation |
N |
eSMR |
Pomona Water Reclamation Plant |
134831 |
81-034 |
N |
| 1125029 |
01/08/2024 |
Order Conditions |
An unauthorized recycled water discharge of a maximum of 9,000 gallons occurred on January 8 from roughly 7:10 a.m. to 7:30 a.m. at the Sanitation Districts' Spadra Landfill located at 4125 West Valley Boulevard in the city of Walnut. The Sanitation Districts notified the Regional Board at 3:45 p.m. on January 8, with a follow up letter on January 12. The unauthorized discharge originated from a below-grade recycled water distribution line near Bench 5 of the landfill on the southwestern side of the facility. The discharge occurred due to a crack in a Victaulic pipe connection fitting which allowed the line to separate, discharging recycled water into the soil. The pipe separation led to surface runoff downslope and into the storm drain prior to the pipeline being isolated. The leak was observed at approximately 7:10 a.m. on January 8, and continued until approximately 7:30 a.m. the same day, when site staff isolated the line. Recycled water was discharged into the soil until it became saturated, emanated from the surface and began to flow approximately 400 feet down the bench road before entering a catch basin. The discharge then flowed another approximately 600 feet before entering a Los Angeles County Department of Public Works storm drain. This storm drain ultimately discharges into the San Jose Creek. The recycled water produced at the Pomona WRP is suitable for discharge to the San Jose Creek per its National Pollutant Discharge Elimination System permit (Order No. R4-2021-0097), therefore no impacts to public health or the environment are expected. Staff reported that there was little flow in the San Jose Creek channel and there were no indications that fish or wildlife had been adversely impacted; therefore, there were no observed biological impacts from the discharge. To minimize reoccurrence of similar events, the Sanitation Districts will investigate the installation of above-grade recycled water lines and initiate a Victaulic fitting inspection program. |
Violation |
N |
eSMR |
Pomona Water Reclamation Plant |
134831 |
81-034 |
N |
| 1113244 |
12/06/2022 |
CAT1 |
Chloride Daily Maximum limit is 150 mg/L and reported value was 153 mg/L at EFF001 WRR. |
Violation |
N |
eSMR |
Pomona Water Reclamation Plant |
134831 |
81-034 |
N |
| 1117819 |
04/05/2023 |
Deficient Monitoring |
Per Section I of the MRP, recycled water samples shall be analyzed daily for total coliform. The total coliform result in the recycled water sample collected on April 5 was invalidated because the test initiation time was not properly recorded. All other coliform results for the month were either non-detect or 1 CFU/100 mL, therefore, this result was expected to be within normal ranges. Laboratory staff were reminded of proper recording and review procedures. |
Violation |
N |
eSMR |
Pomona Water Reclamation Plant |
134831 |
81-034 |
N |
| 1088869 |
02/28/2021 |
Deficient Monitoring |
Per Section I of the MRP, Pomona WRP recycled water samples shall be collected daily for total coliform monitoring. A Pomona WRP recycled water sample was collected on February 28 but not analyzed for total coliform because the sample exceeded the appropriate holding time prior to analysis. |
Violation |
N |
eSMR |
Pomona Water Reclamation Plant |
134831 |
81-034 |
N |
| 1121673 |
09/23/2023 |
Deficient Monitoring |
Per Section I of the MRP, recycled water samples shall be analyzed daily for total coliform. The total coliform result in the recycled water sample collected on September 23 was invalidated because of improper sample incubation procedure. Throughout the month, the coliform results were typically non-detectable, except for one instance in which it was recorded at 2 CFU/100 mL and three other separate instances where it was recorded at 1 CFU/100 mL. Therefore, this result was expected to be within normal range. To prevent a recurrence of this issue, Laboratory senior staff revisited the procedure with the analyst. |
Violation |
N |
eSMR |
Pomona Water Reclamation Plant |
134831 |
81-034 |
N |
| 1109906 |
09/06/2022 |
CAT1 |
Chloride Daily Maximum limit is 150 mg/L and reported value was 159 mg/L at EFF001 WRR. |
Violation |
N |
eSMR |
Pomona Water Reclamation Plant |
134831 |
81-034 |
N |
| 1086036 |
12/06/2020 |
Order Conditions |
An unauthorized discharge of Pomona WRP disinfected tertiary-treated recycled water occurred on December 6, 2020 from approximately 2:13 a.m. to 2:50 a.m. in Rowland Heights, CA near the intersection of Brea Canyon Cut Off Road and Balan Road. The Walnut Valley Water District (end user) reported the discharge to the Los Angeles County Sanitation Districts (Sanitation Districts) on December 16 at 10:54 a.m. The Sanitation Districts confirmed the discharge on December 17 at 11:10 am and provided verbal notification of the event to the Regional Board on the same day at 12:32 p.m. The unauthorized discharge occurred as a result of a car accident near the road intersection on December 6, 2020 at approximately 2:13 a.m. The accident sheared the roadside air vacuum valve and damaged the blow-off line. The estimated total discharge volume is approximately 180,000 gallons based on the size of the recycled water distribution line and duration of the discharge. To reach the nearest receiving water, the recycled water would have had to travel approximately 2.4 miles in the storm drain and discharge into the concrete-lined portion of the San Jose Creek. Residual chlorine in the recycled water would have decayed before reaching the receiving water due to the 2.4-mile travel distance and contact with substances exerting chlorine demand along the storm drain. As a verification measure, staff from the Sanitation Districts' Biological Sciences Group inspected San Jose Creek near the discharge point in Rowland Heights at 1:55 p.m. on December 17. There were no negative biological impacts observed. Because the unauthorized discharge was caused by an unforeseen car accident, additional preventative measures cannot be implemented to prevent a reoccurrence. Walnut Valley staff and Sanitation Districts' staff will review the notification and reporting procedures for unauthorized discharges. |
Violation |
N |
eSMR |
Pomona Water Reclamation Plant |
134831 |
81-034 |
N |
| 1125030 |
01/04/2024 |
Deficient Monitoring |
Per Section I of the MRP, recycled water samples shall be analyzed daily for total coliform. The total coliform result in the recycled water sample collected on January 4 was invalidated due to a laboratory error in which the analyst left the bacterial culture tubes outside of the incubator after the 24-hours read time. All other coliform results for the month were either non-detect or 1 CFU/100 mL, therefore, this result was expected to be within normal ranges. Laboratory staff were reminded of proper procedures. |
Violation |
N |
eSMR |
Pomona Water Reclamation Plant |
134831 |
81-034 |
N |
| 1065321 |
08/06/2019 |
CAT1 |
Chloride Daily Maximum limit is 150 mg/L and reported value was 186 mg/L at EFF001 WRR. |
Violation |
N |
eSMR |
Pomona Water Reclamation Plant |
134831 |
81-034 |
N |
| 1120968 |
08/21/2023 |
Deficient Monitoring |
Per Section I of the MRP, recycled water samples shall be analyzed daily for total coliform. The total coliform result in the recycled water sample collected on August 21 was invalidated because the bacterial plate was discarded by the lab analyst before confirming two colonies. All other coliform results for the month were either non-detect or, in one occurrence, 2 CFU/100 mL, therefore, this result was expected to be within normal ranges. To prevent a recurrence of this issue, Laboratory senior staff revisited the procedure with the analyst. |
Violation |
N |
eSMR |
Pomona Water Reclamation Plant |
134831 |
81-034 |
N |
| 1127444 |
03/05/2024 |
CAT1 |
Chloride Daily Maximum limit is 150 mg/L and reported value was 169 mg/L at EFF001 WRR. |
Violation |
N |
eSMR |
Pomona Water Reclamation Plant |
134831 |
81-034 |
N |
| 1115393 |
02/07/2023 |
CAT1 |
Chloride Daily Maximum limit is 150 mg/L and reported value was 155 mg/L at EFF001 WRR. |
Violation |
N |
eSMR |
Pomona Water Reclamation Plant |
134831 |
81-034 |
N |
| 1097864 |
10/05/2021 |
CAT1 |
Chloride Daily Maximum limit is 150 mg/L and reported value was 151 mg/L at EFF001 WRR. |
Violation |
N |
eSMR |
Pomona Water Reclamation Plant |
134831 |
81-034 |
N |
| 1063221 |
07/03/2019 |
CAT1 |
Nitrate, Total (as N) 30-Day Average limit is 10 mg/L and reported value was 12.5 mg/L. |
Violation |
N |
eSMR |
Camarillo WRP |
393691 |
R4-2013-0140 |
N |
| 1121728 |
08/09/2023 |
Groundwater |
Managense Violation on Las Posas Control Well. 240ug/L. |
Violation |
N |
eSMR |
Camarillo WRP |
393691 |
R4-2013-0140 |
N |
| 1121727 |
08/09/2023 |
Groundwater |
Manganese Violation for Camarillo Springs Control Well. 510ug/L. |
Violation |
N |
eSMR |
Camarillo WRP |
393691 |
R4-2013-0140 |
N |
| 1111173 |
10/05/2022 |
CAT2 |
Bis (2-Ethylhexyl) Phthalate Monthly Average limit is 4 ug/L and reported value was 10 ug/L. |
Violation |
N |
eSMR |
Camarillo WRP |
393691 |
R4-2013-0140 |
N |
| 1117607 |
04/11/2023 |
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 33 MPN/100 mL. |
Violation |
N |
eSMR |
Camarillo WRP |
393691 |
R4-2013-0140 |
N |
| 1117606 |
04/17/2023 |
OEV |
Total Coliform 7-Day Average (Mean) limit is 2.2 MPN/100 mL and reported value was 4.0 MPN/100 mL. |
Violation |
N |
eSMR |
Camarillo WRP |
393691 |
R4-2013-0140 |
N |
| 1067901 |
10/02/2019 |
CAT2 |
Bis (2-Ethylhexyl) Phthalate 30-Day Average limit is 4 ug/L and reported value was 24 ug/L. |
Violation |
N |
eSMR |
Camarillo WRP |
393691 |
R4-2013-0140 |
N |
| 1121726 |
08/09/2023 |
Groundwater |
Uranium Violation on McCormick Farms Well. Sampled on 8/9/23, 99pCi/L. |
Violation |
N |
eSMR |
Camarillo WRP |
393691 |
R4-2013-0140 |
N |
| 1124360 |
04/17/2023 |
OEV |
Total Coliform 30-Day Median limit is 02.2 MPN/100 mL and reported value was 04.4 MPN/100 mL. |
Violation |
N |
eSMR |
Camarillo WRP |
393691 |
R4-2013-0140 |
N |
| 1118578 |
04/11/2023 |
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 33 MPN/100 mL. |
Violation |
N |
eSMR |
Camarillo WRP |
393691 |
R4-2013-0140 |
N |
| 1112714 |
10/05/2022 |
CAT2 |
Bis (2-Ethylhexyl) Phthalate 30-Day Average limit is 4 ug/L and reported value was 10 ug/L. |
Violation |
N |
eSMR |
Camarillo WRP |
393691 |
R4-2013-0140 |
N |
| 1121729 |
08/09/2023 |
Groundwater |
Gross Alpha Violation, McCormick Farms Control Well. Sampled on 8/9/23, 70.1+-2.707pCi/L |
Violation |
N |
eSMR |
Camarillo WRP |
393691 |
R4-2013-0140 |
N |
| 1118577 |
04/17/2023 |
OEV |
Total Coliform 7-Day Median limit is 2.2 MPN/100 mL and reported value was 4.0 MPN/100 mL. |
Violation |
N |
eSMR |
Camarillo WRP |
393691 |
R4-2013-0140 |
N |
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