| Violation ID |
Occurred Date |
Violation Type |
(-) Violation Description |
Corrective Action |
Status |
Classification |
Source |
| 1146084 |
06/27/2025 |
CAT1 |
Iron, Total Annual Average (Mean) limit is 300 ug/L and reported value was 330 ug/L. |
|
Violation |
B |
Report |
| 1146086 |
06/27/2025 |
CAT1 |
Manganese, Total Annual Average (Mean) limit is 47 ug/L and reported value was 50.0 ug/L. |
|
Violation |
B |
Report |
| 1138796 |
12/14/2024 |
DMON |
On 12/14/2024, M1W lost commercial power to AWPF and communications at IWF due to severe weather. As a result, M1W was unable to collect the required daily coliform sample from PWPS. While the requirement is based on a 7-day median and historically there have been no exceedances, M1W collected samples from the DIWs on 12/16 and 12/17 which were all ND. |
|
Violation |
B |
Report |
| 1140309 |
12/09/2024 |
DMON |
On 12/9/2024, M1W collected routine weekly composite samples at AWPF influent; however, the sample bottle for boron and sodium was inadvertently not filled and therefore not sent to the contract lab for analysis. |
|
Violation |
B |
Report |
| 1131066 |
04/29/2024 |
LREP |
The AWPF experienced a hold time exceedance in the month of May for the AWPF influent TOC sample. M1W’s instrument was out of service which required samples be sent to a contract lab for analysis. The contract lab completed analysis out of the required hold time. The results are reported in Table 18 with a data qualifier for analysis outside of hold time.
|
|
Violation |
B |
Report |
| 1130197 |
02/04/2024 |
DMON |
2/4/2024 M1W failed to obtain a sample at PWPS for total coliform. On 2/5/2024 M1W notified regulators and was directed to obtain samples every hour for 3 hours at DIW-3 and DIW-4 (for a total of 6 samples/well) and analyze them for total coliform. All results were ND. See attached email communication for additional information. |
|
Violation |
B |
Report |
| 1145032 |
07/01/2022 |
Other Water Code Sections |
There was one instance of non-compliance which resulted in the violation of a secondary drinking water MCL pertaining to manganese. MW-1AS has experienced episodic elevated manganese results since its startup in 2020. Manganese has a secondary drinking water MCL of 50 µg/L which is based on a running annual average as described in 22 CCR §64449. In 2022, MW-1AS manganese levels resulted in a running annual average of 59.7 µg/L.
|
|
Violation |
B |
Report |
| 1145035 |
11/05/2020 |
Other Water Code Sections |
Elevated chlorate level, not exceeding the Notification Level (NL), at the Product Water Pump Station. |
|
Violation |
B |
Report |
|
Report displays most recent five years of violations. Refer to the Interactive Violation Report for more data.
|
